Council Memorandum
August 1, 2024
To:
From:
Via:
Re:
Honorable Mayor Blackburn and Members of the City Council Paz Gomez, Deputy City Manager, Public Works
Geoff Patnoe, Assistant City Manager f@
Heal the Bay's 2023-2024 Beach Repor~ rd (Districts - All) {city of
Carlsbad
Memo ID# 2024053
This memorandum provides information related to the 2023-2024 Beach Report Card published by Heal the Bay.
Background
On July 17, 2024, Heal the Bay released its 34th annual Beach Report Card, a scientific report on bacterial pollution rankings for hundreds of beaches in California . Heal the Bay is an environmental nonprofit organization that was founded in 1985, dedicated to preserving water quality t hrough science and education. The Beach Report Card is Heal the Bay's flagship scientific water quality monitoring program that started in the 1990s.
The Beach Report Card transforms complicated water quality data into an easy-to-understand A-F grading format. Grades are based on routine water quality sampling conducted by San Diego County health agencies, state agencies, sanitation departments and dischargers. For recreational health protection, water samples are analyzed for three fecal indicator bacteria: total coliform, fecal coliform and Enterococcus. The report card assigns three separate grades for each beach: a summer dry grade (April through October); a winter dry grade (November through March); and a wet weather grade (samples taken during or after rain events April through March). Beaches are only assigned a grade when enough data are available.
Discussion
There were five Carlsbad beaches assessed in this year's repor t card, including t he following:
• Carlsbad Boulevard at Poinsettia Lane
• Carlsbad Boulevard at Pont o Drive
• Carlsbad Boulevard at Encina Creek
• Carlsbad Boulevard at Palomar Airport Road
• Carlsbad Boulevard at Cerezo Drive
The City of Carlsbad is proud that all five beaches received A+ grades in wet weather and summer dry weather. For winter dry weather, all five beaches received A grades.
Public Works Branch
Environmenta l Sustainability Department
1635 Faraday Avenue I Carlsbad, CA 92008 I 442-339-2729 t Council Memo - Heal the Bay's 2023-2024 Beach Report Card (Districts - All) August 1, 2024
Numerous city departments and divisions such as Watershed Protection, Sustainable Materials Management, Streets and Storm Drain Maintenance, Housing & Homeless Services, Construction Management & Inspection, Parks & Recreation and Utilities help contribute to clean water at Carlsbad beaches.
To view the report card in its entirety, please visit https://healthebay.org/ , or see Attachment A.
Next Steps
Staff will continue to implement programs to protect and preserve Carlsbad's water quality and natural environment.
Attachment: A. Heal the Bay's 2023-2024 Beach Report Card (Due to the size of Attachment A, a hard copy is on file in the Office of the City Council, as reference) cc: Scott Chadwick, City Manager
Cindie McMahon, City Attorney
Gary Barberio, Deputy City Manager, Community Services
Laura Rocha, Deputy City Manager, Administrative Services Gina Herrera, Assistant City Attorney
Amanda Flesse, Utilit ies Director
Tom Frank, Transport ation Director/City Engineer
Kyle Lancaster, Parks & Recreation Director
Mandy Mills, Housing & Homeless Services Director
Kristina Ray, Communication & Engagement Director
James Wood , Environmen t al Sustainability Director
Emily Hasegawa, Engineering Manager
Avecita Jones, Senior Program Manager
Tim Murphy, Senior Program Manager
Michael O'Brien, Public Works Superintendent
Natalie Reed, Community Relations Manager
Beach
Report Card
2023-2024
ATTACHMENT A
Heal the Bay
We would like to acknowledge that Heal the Bay is located on the traditional lands of the Tongva and Chumash People and pay our respects to elders past, present, and emerging.
Heal the Bay is an environmental non-profit dedicated to making the coastal waters and watersheds of Greater Los Angeles safe, healthy and clean. To fulfill our mission, we use science, education, community action, and advocacy.
The Beach Report Card program is funded by grants from:
©2024 Heal the Bay. All Rights Reserved. The fishbones logo is a trademark of Heal the Bay.
The Beach Report Card is a service mark of Heal the Bay.
We at Heal the Bay believe the public has the right to know the water quality at their beaches. We are proud to provide West Coast residents and visitors with this information in an easy-to-understand format. We hope beachgoers will use this information to make the decisions necessary to protect their health.
Beach Report Card
2023-2024
Heal the Bay
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3 HEAL THE BAY // 2023–2024
CONTENTS
HEAL THE BAY
2023-2024
• I: WELCOME
EXECUTIVE SUMMARY
..................................................................... 5
INTRODUCTION
................................................................................... 8
BEACH REPORT CARD BASICS
...................................................... 9 • II: WEST COAST SUMMARY
HONOR ROLL
......................................................................................10
BEACH BUMMERS
...............................................................................11 IMPACT OF BEACH TYPE.................................................................14
CALIFORNIA OVERVIEW
..................................................................18
CALIFORNIA COUNTY SUMMARIES
............................................21
OREGON COUNTY SUMMARIES
.................................................32
WASHINGTON COUNTY SUMMARIES
.......................................35
TIJUANA, MEXICO SUMMARY
......................................................39 • III: BEACH NEWS
SPECIAL SECTION: SEWAGE POLLUTION IN THE
TIJUANA WATERSHED
.....................................................................41
EFFORTS TO WEAKEN WATER QUALITY OBJECTIVES
......42
INCORPORATING DDPCR TECHNOLOGY IN SAN DIEGO..43
KEEPING OUR OCEAN SAFE AND CLEAN
...............................44
NOWCAST UPDATE
..........................................................................44
THE BEACH REPORT CARD AND
ACCESS TO RECREATION
..............................................................45 • IV: APPENDICES
A // BEACH BUMMER HISTORY
.................................................... 47
B // ALL GRADES BY COUNTY
.....................................................49
C // FREQUENTLY ASKED QUESTIONS
.....................................64
D // METHODOLOGY
.......................................................................66
E // AKNOWLEDGEMENTS
.............................................................68 4 HEAL THE BAY // 2023–2024
WELCOME
Manhattan Beach Pier / Los Angeles County
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Moonlight State Beach / San Diego County
EXECUTIVE SUMMARY
I WELCOME
Heal the Bay is proud to release the 34th annual Beach Report Card. This report examines amounts of fecal pollution measured at ocean beaches along the West Coast. The main goal of the Beach Report Card is to keep people safe when they go to the beach. We accomplish this by turning water quality data into easy-to-understand A to F letter grades. 2023 Summer Dry Grades were great across the State with 89% of California beaches receiving A and B grades, which is slightly below the average. Winter Dry Grades were well below average with only 66% of the beaches receiving A and B grades. Wet Weather Grades for the past year were above average with 80% of the beaches receiving A and B grades This year, coastal counties in California received 31% more rainfall than the 10-year average, which is a significant amount, though not as extreme as last year's record-
breaking levels. The state experienced five major storm events, known as atmospheric rivers, from October 2023
to March 2024. This count is close to the annual average of six but far fewer than the 19 experienced in the previous year. Particularly notable was an intense atmospheric river in Southern California that struck on February 4, 2024.
The downtown area of Los Angeles received 7.03 inches
of rain over two days, making it the third highest two-day rainfall total recorded since the city’s official weather records started in 1877. This extreme weather caused
widespread flooding, mudslides, and power outages,
creating hazardous conditions for millions. The storms
overwhelmed urban infrastructure, leading to significant environmental and safety challenges.
The heavy rains washed pollutants, including bacteria,
into the ocean, which typically leads to a decline in Wet Weather Grades. While water quality did clearly decline with wet weather, this year the grades were not as poor as expected because the storm severity made it difficult to collect water quality samples during or immediately after the rainfall. Fewer samples taken during wet weather, and specifically during the largest storms, likely led to Wet Weather Grades that were above average. However, Winter Dry Grades suffered significantly from lingering impacts of rain, which flushed pollutants through storm drains and caused numerous sewage spills, introducing a high volume of contaminants into the ocean. This led to a prolonged presence of pollutants, resulting in notably poorer water quality throughout the winter. Despite these conditions, 12 beaches qualified for the Honor Roll this year, an
improvement from just 2 the previous year, though still far below the usual 30 to 50 beaches. Moreover, an alarming 6 HEAL THE BAY // 2023–2024 EXECUTIVE SUMMARY
I WELCOME EXECUTIVE SUMMARY
38 million gallons of sewage spilled into the ocean and coastal waterways, exacerbated by the increased rainfall that overwhelmed sewage systems.
Sewage spills, combined with extreme weather,
underscore the urgent need for climate preparedness
and investments in sewage infrastructure upgrades and
enhancements in public notification protocols. Local
officials are strongly urged to prioritize these investments to ensure the safety and well-being of all beachgoers and to protect the environmental health of California’s coastal ecosystems.
This year’s Beach Bummers, by county, are:
• San Diego County: Battling Persistent
Cross-Border Pollution
San Diego County faces a unique environmental
crisis, marked by its proximity to the Tijuana River
which consistently brings pollution from across the
border. Tijuana River Mouth, now the top Beach
Bummer, highlights the extreme challenges from tens
of millions of gallons of untreated sewage that spill
into the ocean annually. Nearby, Tijuana Slough, just
north of the river, shares these burdens, exacerbated
by poorly treated discharges from the Punta Bandera
plant. Both areas are part of ongoing United States
Environmental Protection Agency (USEPA)-funded
projects aimed at reducing pollution. New to the list
are Imperial Beach at Seacoast Drive and Border
Field State Park, which also suffer from these issues.
Despite their open waters, these beaches are unable
to dilute the influx of pollutants, stressing the critical need for enhanced water treatment and international
cooperation.
• Baja California, Mexico: Severe Sewage
Contamination Issues
Baja California's beaches in the Tijuana area, notably
Playa Blanca and El Faro, continue to endure
significant environmental degradation due to
inadequate sewage systems in Tijuana. Playa Blanca,
holding its Beach Bummer position at number two,
and El Faro at number 10, both receive sewage-
contaminated runoff that severely affects their water
quality and usability. The ongoing issue reflects a
broader environmental crisis that requires substantial
infrastructure improvements and effective sewage
treatment solutions to mitigate the impact on these
coastal areas.
• Los Angeles County: Urban Runoff and
Enclosed Beach Challenges
In Los Angeles County, Santa Monica Pier, which
ranks third on the Beach Bummer list, faces ongoing
challenges to improve water quality despite recent
upgrades, including stormwater capture systems.
Additionally, efforts like bird deterrent netting have
proven ineffective or have not been adequately
maintained. The persistent water quality issues are
compounded by polluted runoff and continuous
urban activities in the vicinity that exacerbate
pollution at the pier. Marina del Rey Mother’s Beach,
an enclosed beach with limited circulation, is
synonymous with poor water quality. Despite various
cleanup and intervention projects, its geographical
setting makes natural cleansing difficult, highlighting the ongoing battle against pollution in enclosed
coastal areas.
• San Mateo County: Enclosed Beaches and
Stagnant Waters
San Mateo County is home to recurring Beach
Bummers like Linda Mar Beach and Lakeshore Park
due to its enclosed water bodies and insufficient
circulation. Linda Mar Beach, impacted by
pollution from San Pedro Creek, faces continuous
environmental challenges that prevent it from
shaking its Beach Bummer status. Lakeshore
Park, set within stagnant bay channels, illustrates
the difficulty in managing pollution in static water
environments. The county’s struggle is highlighted by
the repeated inclusion of its beaches on the Beach
Bummer list, underscoring the need for targeted
pollution management strategies.
7 HEAL THE BAY // 2023–2024
No Oregon beaches were monitored during the winter
months. Six counties received Summer Dry Grades and
Wet Weather grades. 100% of Oregon beaches had
excellent Summer Dry Grades of A or B. And 79% of
the beaches received A and B grades for Wet Weather,
which is higher than the state’s historical average of 67%.
Washington Summer Dry Grades were also superb, with
97% of the beaches receiving A and B grades, which is
above the average of 92%. Wet Weather Grades were
equally outstanding and above average with 93% of
beaches receiving A and B grades. Unfortunately, most
Washington beaches were not monitored during the
winter months so we could not calculate Winter Dry
Grades. For the five beaches monitored in winter, they all received A or B for Winter Dry Grades.
The good news about water quality at our beaches is
that we know how to reduce the most common inputs
of fecal pollution. A watershed-wide, nature-based
approach, in addition to sewage infrastructure upgrades, is our best bet for keeping our waters clean and safe.
Green stormwater infrastructure spaced throughout
our communities will provide cleaner water, green
space for communities to enjoy, and habitat for wildlife.
Los Angeles County has created a model program for
improving coastal and inland water quality through the
Safe, Clean Water Program, which aims to increase local water supply, improve water quality, and protect public health by focusing efforts on multi-benefit projects, with a commitment to invest equitably in communities that
have been identified as disadvantaged or severely
disadvantaged with regards to access to green
space and other socioeconomic factors. The Program
has invested a total of $1.4 billion in 126 stormwater
infrastructure projects to date.
Alarmingly, we have observed an increase in the
number of attempts to loosen or rollback fecal pollution regulations in California. When waterways become
polluted with contaminants such as bacteria and viruses (as measured through fecal indicator bacteria or FIB),
I WELCOME EXECUTIVE SUMMARY
the USEPA holds the surrounding municipalities
responsible for that pollution and requires them
to keep pollution out of those waterways or face
penalties. Unfortunately, many local governments and
other pollution dischargers across California attempt
to change the standards they are held to so they can
achieve compliance more readily instead of addressing
water quality issues directly. Heal the Bay is adamantly against efforts to circumvent California’s water quality objectives, and we urge the State Water Resources
Control Board (SWRCB) to firmly reassert that local
governments and other pollution dischargers are
responsible for keeping all fecal matter, that human
activity either causes or contributes to, out of the ocean and surrounding waterways.
As evidenced by the presence of numerous San Diego
County and Tijuana beaches on the Bummer List, the
transboundary pollution issues in the Tijuana River
watershed continue to be a major concern. This area
is significantly impacted by water pollution, which not only affects local ecosystems but also compromises
public health across border communities. Heal the Bay
is actively engaged in cross-border efforts to address
these challenges and is committed to supporting
comprehensive solutions that will lead to substantial
improvements in water quality in the region. We urge
local and international stakeholders to collaborate
more closely to tackle the pollution problems in the
Tijuana watershed effectively.
In the face of ongoing challenges, Heal the Bay is
encouraged by the adoption of innovative rapid
testing methods such as digital droplet polymerase
chain reaction PCR (ddPCR) technologies. These
advancements offer the potential for more timely and
accurate detection of fecal pollution in our waterways.
As we work to integrate ddPCR results into our Beach
Report Card grading system, we remain cautiously
optimistic about their comparability to traditional
culturing methods, which have long served as the
benchmark for regulatory compliance and public health
protection.
8 HEAL THE BAY // 2023–2024
INTRODUCTION
I WELCOME
Life in coastal areas of the West Coast is intrinsically connected to the beach. These spaces are not only vital for relaxation and recreation but also serve as communal hubs where people can enjoy natural beauty and connect with one another. While we are fortunate to have many days of pristine and inviting beaches, there are times when the water quality along the coast can pose health risks.
Common pollutants including chemicals, trash, and fecal matter frequently contaminate our coastal waters, posing threats to both human health and marine ecosystems.
The Beach Report Card Initiative by Heal the Bay
Over 30 years ago, Heal the Bay introduced the Beach
Report Card as a pivotal public health tool designed to safeguard beachgoers. This comprehensive tool evaluates water quality by analyzing bacteria pollution at over
approximately 700 beaches stretching from Tijuana up
through Washington. The Beach Report Card is accessible to the public through both a website and a mobile app,
entirely free of charge, underscoring our commitment to public health and environmental stewardship.
Beyond its role as an information resource, the Beach
Report Card has been instrumental in advocacy efforts
led by Heal the Bay. These efforts aim to enhance water quality and have motivated municipalities and agencies
to implement measures that have led to numerous
environmental success stories across the coast.
Understanding the Beach Report Card Grades
The grades issued in the Beach Report Card are based on the levels of fecal indicator bacteria (FIB) found in ocean waters. These bacteria themselves are not harmful, but their presence indicates contamination by fecal matter that may contain dangerous pathogens. Fecal pollution is of particular concern because even a single exposure can result in
illness. In contrast, other pollutants like heavy metals may only cause health issues after prolonged exposure, which is less likely for the average beachgoer. However, frequent beach users such as surfers may face higher risks due to more regular contact with these pollutants.
Recommendations for Beachgoers
We encourage all beach users to consult the Beach Report Card to assess potential health risks before entering the water. Avoiding water at beaches with poor grades reduces the risk of exposure not only to harmful bacteria but also to other pollutants, which often enter the ocean through common pathways such as storm drains, rivers, and streams.
We advise people to steer clear of ocean water near storm drains and river outlets, and to avoid all ocean contact for at least three days following significant rainfall. While Heal the Bay does not advocate for restricting beach or water access unless there are exceptional circumstances, we believe
in empowering people with the necessary water quality
information to make informed decisions about when and
where to swim.
9 HEAL THE BAY // 2023–2024
I WELCOME
BEACH REPORT CARD BASICS
The Beach Report Card utilizes a straightforward A-to-F grading system to communicate water quality to the public. While A or B grades indicate good water quality for recreational uses, C to F grades mean increased health risks. This annual report compiles comprehensive grades for West Coast beaches and includes details on significant water quality events from the past year, such as sewage spills and major storms.
Grades are derived from routine
water quality sampling conducted
by various authorities including
county health agencies, state
agencies, tribal agencies, and
sanitation departments. Water
samples are tested for three key FIB:
total coliform, fecal coliform (E. coli),
and Enterococcus species. High
concentrations of these bacteria
indicate the presence of pathogens
that could be harmful to beachgoers.
This report assigns three separate
grades for each beach:
Summer Dry Grade
(April 2023 through
October 2023)
This is the prime recreation season
in California when beaches are
most active. County governments
are required to sample during this
period according to the California
Beach Bathing Water Quality
Standards, as defined in Assembly
Bill 411 (AB 411, Wayne 1997).1
Samples taken during wet weather
are not used for these grades.
1 https://www. waterboards.ca.gov/bacterialobjectives/
Winter Dry Grade
(November 2023 through
March 2024)
AB 411 does not mandate water quality
monitoring for recreational purposes
during winter months leading many
Counties and States to halt water
quality monitoring in the winter season.
Additionally, recreation generally
decreases at beaches during the winter.
Therefore, the winter season is graded
separately. Samples taken during wet
weather are not used for these grades.
Wet Weather Grade
(April 2023 through
March 2024)
When rain falls over impermeable
surfaces such as concrete, it becomes
runoff, flushing contaminants, including
bacteria, from our streets out into the
ocean through storm drains, rivers,
and streams. This polluted stormwater
decreases water quality by increasing
the amount of pathogens in the ocean
to potentially unsafe levels. Wet Weather
Grades consist of samples taken during
or within three days following a rain
event greater than 0.1 inches.
Beachgoers who visit beaches
during or after a rain event have
an increased risk of contracting ear
infections, eye infections, upper
respiratory infections, skin rashes,
and gastrointestinal illnesses.
2,3,4
Swimmers are advised to stay out
of the water for a minimum of three
days following a significant rain
event (0.1 inches or greater).
5 2 Haile, R.W., J.S. Witte, M. Gold, R. Cressey, C.
McGee
, R.C. Millikan, A. Glasser, N. Harawa, C.
Ervin, P. Harmon, J. Harper, J. Dermand, J. Alamillo,
K. Barrett, M. Nides, G. Wang. The health effects
of swimming in ocean water contaminated by
storm drain runoff. 1999. Epidemiology Vol. 10 No.4
355–363.
3 Colford, J.M., T
.J. Wade, K.C. Schiff, C.C. Wright,
J.F. Griffith, S.K. Sandhu, S. Burns, M. Sobsey, G.
Lovelace, S.B. Weisberg. 2007. Water quality
indicators and the risk of illness at beaches
with nonpoint sources of fecal contamination.
Epidemiology Vol. 10 No. 1 27–35.
4 Arnold, B.F., K.C. Schiff
, A. Ercumen, J. Benjamin-
Chung, J.A. Steele, J.F. Griffith, S.J. Steinberg,
P. Smith, C.D. McGee, R. Wilson, C. Nelsen, S.B.
Weisberg, J.M. Colford. 2017. Acute illness among
surfers after exposure to seawater in dry-and
wet-weather conditions. American Journal of
Epidemiology Vol. 186 No. 7 866–875.
5 https://www.ioes.ucla. edu/wp-content/uploads/2017/
02/2013healthebayproject-1.pdf
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10 HEAL THE BAY // 2023–2024
HONOR ROLL
To earn a spot on the Honor Roll, a beach must be monitored weekly throughout the year and receive an A+ grade in all conditions — Summer Dry, Winter Dry, and Wet Weather.
II WEST COAST SUMMARY
This year, only twelve of the over 500 monitored beaches in California achieved this distinction. While this is an improvement from two beaches last year, it is significantly lower than the typical 30–50 beaches that make the list.
The reduced number of Honor Roll beaches this year
is largely due to the unprecedented rainfall during the 2023–2024 winter, which substantially decreased overall water quality.
The record rainfall particularly affected the Honor Roll in two significant ways: firstly, fewer beaches managed to secure weekly Winter Grades due to reduced sampling
activities; secondly, the increased precipitation worsened water quality by washing more pollutants into the ocean.
This was especially evident in February when Southern
California experienced record-high storms, severely
impacting water quality and disqualifying many regular
Honor Roll contenders from the region.
Achieving zero bacterial exceedances all year under all conditions is a formidable challenge, made even more
difficult by heavy rainfall. Additionally, the inability to grade one-third of San Diego County’s beaches owing
to a new testing methodology (ddPCR) that the Beach
Report Card grading is not yet compatible with — which
often represents a substantial portion of the Honor Roll — further shortened the list since 2022 when the new
methodology was adopted.
Historically, the Honor Roll has been dominated by
Southern California beaches, partly because many
Northern and Central California counties do not monitor water quality year-round. However, this year's severe
winter weather affected water quality across all regions.
A+
BEACH NAME COUNTY
Dana Point Harbor Fuel Dock Orange
Huntington Harbor, Seagate Lagoon Orange
Huntington Harbor, Trinidad Lane Beach Orange
Newport Bay, Promontory Point Orange
Dana Point, South Capistrano
Bay Community Beach Orange
Riviera Beach Orange
Emerald Bay Beach Orange
Marine Science Institute Beach (SERRA) Orange
Salt Creek Beach Orange
Point Loma, Lighthouse San Diego
Encinitas, Moonlight Beach,
Cottonwood Creek San Diego
County Line Beach Ventura
2023-2024HONOR ROLL
Notably, the Point Loma Lighthouse in San Diego
maintained its position on the Honor Roll for three
consecutive years. Other beaches on the Honor Roll
include Moonlight Beach in San Diego and Ventura’s
County Line Beach, with the remaining beaches all
located in Orange County. Despite the challenges this
year, these beaches have demonstrated exemplary water
quality resilience.
11 HEAL THE BAY // 2023–2024
BEACH BUMMERS
The beaches that received the ten poorest Summer Dry Grades are called Beach Bummers.
This year’s Beach Bummers are:
1. Tijuana R iver Mouth
(San Diego County)
Previously ranked sixth, Tijuana River Mouth surged to the top this year due to persistent sewage issues. The Tijuana River annually discharges tens of millions of gallons of untreated sewage into the ocean, originating from
inadequate sewage infrastructure in Tijuana. Enhancements are underway, including the USEPA-funded upgrades to
the Punta Bandera treatment plant and Tijuana's
infrastructure, which aim to ameliorate these conditions.
2. Pla ya Blanca
(Baja California, Mexico)
After being the top Beach Bummer for two consecutive
years, Playa Blanca falls to second place this year. It continues to suffer from sewage-contaminated runoff
from the Tijuana region, where sewage infrastructure is notably insufficient. Additionally, the nearby Punta
Bandera treatment plant discharges millions of gallons of only partially treated wastewater into the ocean, affecting Playa Blanca and surrounding beaches. Research
suggests that while ocean currents often carry this
contamination north, other sources of pollution may also impact this beach.
3. Santa Mo nica Pier
(Los Angeles County)
Falling from last year's top spot to third, Santa Monica Pier remains a concern. Despite improvements like a
stormwater capture system installed in 2018 and
renewed efforts to manage pollution from bird feces,
water quality issues persist. The pier's consistent
appearance on the Beach Bummer list indicates ongoing
challenges in controlling sources of pollution.
4. Tijuana Sl ough
(San Diego County)
Situated north of the Tijuana River Mouth, Tijuana
Slough suffers from severe sewage pollution due to
compromised infrastructure in Tijuana. Millions of
gallons of sewage are released into the Tijuana
River annually, impacting the Slough and adjacent
coastal areas. Recent findings also highlight the
negative effects of partially-treated sewage from the
Punta Bandera treatment plant, which flows north
and deteriorates water quality at beaches across the
border region.
5. Lin da Mar Beach
(San Mateo County)
Making a return to the Beach Bummer list, Linda Mar
Beach has been impacted by pollution primarily
through San Pedro Creek, which channels urban
runoff directly to this Pacific Ocean beach. The
beach's recurring presence on the list underscores
ongoing issues with managing local runoff.
6. Lak eshore Park
(San Mateo County)
Repeatedly featured as a Beach Bummer in
previous reports, Lakeshore Park faces pollution
problems due to its location within a network of
stagnant water channels in San Francisco Bay.
These channels, receiving continuous urban runoff
from surrounding areas, provide limited water
circulation, which hampers the natural cleaning
processes.
II WEST COAST SUMMARY
F
12 HEAL THE BAY // 2023–2024
7. Imperial Beach at Seaco ast Drive
(San Diego County)
Newly listed as a Beach Bummer, Imperial Beach at
Seacoast Drive's inclusion is notable since open ocean
beaches usually avoid such classification due to better tidal flushing. However, the significant sewage pollution from the Tijuana River this year was enough to
overwhelm natural dispersal mechanisms, highlighting
severe water quality issues.
8. Border Field State Park
(San Diego County)
Located close to the Tijuana River Mouth, Border Field
State Park faces similar challenges as Imperial Beach,
with heavy sewage pollution persistently affecting water quality. The beach's proximity to the pollution source
exacerbates the situation, despite the advantageous
open ocean setting.
9. Marina Del Re y Mother’s Beach at
Lifeguar
d Tower
(Los Angeles County)
Mother’s Beach remains a Beach Bummer, primarily due to its enclosed geography within Marina Del Rey, which limits wave action and water circulation. This setup traps
pollutants close to the shore, and despite several local water quality improvement efforts, the beach continues to struggle with high levels of bacterial pollution.
10. El Faro
(Baja California, Mexico)
Matching the predicaments of Playa Blanca, El Faro
endures continuous exposure to sewage-contaminated
runoff from Tijuana. The lack of sufficient sewage treatment in the area is stark, with all monitored beaches in Tijuana scoring straight Fs across all conditions, underscoring the critical water quality crisis.
II WEST COAST SUMMARY BEACH BUMMERS
RANK LOCATION SUMMER
DRY GRADE COUNTY/AREA BEACH TYPE
1 Tijuana Slough, Tijuana River mouth F San Diego Storm Drain Impacted 2 Playa Blanca F Tijuana
3 Santa Monica Pier F Los Angeles Storm Drain Impacted
4 Tijuana Slough, north of Tijuana River F San Diego Storm Drain Impacted 5 Linda Mar Beach, at San Pedro Creek F San Mateo Storm Drain Impacted 6 Lakeshore Park, behind Rec Center F San Mateo Enclosed 7 Imperial Beach, at Seacoast Dr. F San Diego Open
8 Border Field State Park, at Monument Rd. F San Diego Open 9 Marina del Rey Mothers' Beach, between
Lifeguard Tower and Boat dock F Los Angeles Enclosed
10 El Faro F Tijuana
2023-2024BEACH BUMMERS F
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II WEST COAST SUMMARY BEACH BUMMERS
0 200 miles
0 200 km
2023-2024 california
BEACH BUMMERS
1 Tijuana River Mouth: Severely affected
by untreated sewage from Tijuana, with
ongoing infrastructure upgrades in progress.
2 Playa Blanca: Impacted by sewage-
contaminated runoff and partially
treated wastewater from Punta Bandera
treatment plant.
3 Santa Monica Pier: Continues to struggle
with urban runoff and pollution despite
recent improvements.
4 Tijuana Slough: Suffers from significant
sewage pollution from Tijuana and north-
flowing contaminants from Punta Bandera
treatment plant.
5 Linda Mar Beach: R ecurrently listed
due to pollution from urban runoff via
San Pedro Creek.
6 Lakeshore Park: Troubled by pollution in
stagnant bay channels from local urban
runoff.
7 Imperial Beach at Seacoast Drive: Notable
for severe sewage pollution from the
Tijuana River, affecting water quality despite
its open ocean setting.
8 Border Field State P ark: Affected by heavy
sewage pollution close to the Tijuana River
Mouth, challenging its coastal environment.
9 Marina Del Rey Mother’ s Beach at
Lifeguard Tower: Enclosed location limits
water circulation, leading to persistent
bacterial pollution.
10 El Faro: Continuously e xposed to sewage-
contaminated runoff from Tijuana, resulting
in severe water quality issues.
10 2
8 7
5 6
4 1
9 3
SAN DIEGO
COUNTY
SAN MATEO
COUNTY
LOS
ANGELES
COUNTY
TIJUANA
F
Pacific Ocean
• -~___J
0 ----
-¢-.............., ..............,
14 HEAL THE BAY // 2023–2024
Different beach types inherently face varying levels of water quality challenges due to their geographical and environmental characteristics. We have categorized California’s beaches into three groups for analysis: 1) open beaches, 2) storm drain, stream, and river beaches, and 3) enclosed beaches. This year, our analysis has been particularly focused on understanding how enclosed and storm drain-impacted beaches have disproportionately suffered due to significant sewage spills exacerbated by intense storm events.
IMPACT OF BEACH TYPE
Open Beaches
Open beaches do not have obstructions
between the beach and open water. They
experience more wave action and greater water
circulation than an enclosed beach. These beaches do
not have storm drains, streams, or rivers flowing into
them. As a result, open beaches tend to have better water quality than enclosed or storm drain, stream, or river
beaches. This year, 82 open beaches received grades.
• Summer Dry Grades: Despite a slight decrease, 94%
of open beaches received A and B grades.
• Winter Dry Grades: Maintained strong performance
with 86% receiving A and B grades.
• Wet Weather Grades: Went way above average with
91% receiving A and B grades (could be attributed
to decreased sampling activity due to severe winter
storms).
• This year, two open beaches in San Diego have
landed on the Beach Bummer list, indicating
unusually severe pollution levels
Storm Drain, Stream, and
River Beaches
Beaches near storm drains, streams, or
rivers are particularly vulnerable to urban runoff, which often carries a higher load of pollutants, especially after rainfall. We recommend swimming at least 100 yards away from storm drains, streams, and rivers at the beach and avoiding contact with the water for at least three days following a rain event. This year we issued grades to 222 of these beaches.
• Summer Dry Grades: Showed commendable
performance with 89% receiving A and B grades.
• Winter Dry Grades: Deterioration observed with only
66% securing A and B grades due to increased runoff
pollution.
• Wet Weather Grades: Improvement observed to 79%.
• Four of this year’s Beach Bummers were impacted by
runoff from a nearby storm drain, river, or stream.
II WEST COAST SUMMARY
~
~
15 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY IMPACT OF BEACH TYPE
Enclosed Beaches
Enclosed beaches, such as those found in
bays or marinas, are blocked from open
waters by land masses or jetties, leading to poor water circulation and generally worse water quality. Their calm waters make them inviting for families with small children, often earning them the moniker "Mother’s Beach." This
year, the grading for 79 enclosed beaches reflects their increased vulnerability to pollution, particularly during rain events. We calculated grades for 79 enclosed
beaches this year.
Mother’s Beach / Los Angeles County
• Summer Dry Grades: 86% of enclosed beaches
received A and B grades.
• Winter Dry Grades: Declined to 51%, significantly
impacted by lingering runoff effects after rain during
dry weather and the limited capacity of these waters
to disperse pollutants effectively.
• Wet Weather Grades: 72% received A and B grades,
showing the effect of limited circulation.
• Two of this year’s Beach Bummers were enclosed
beaches.
16 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY IMPACT OF BEACH TYPE
GRADES BY TIME PERIOD & BEACH TYPE
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 80 92% 53 87% 53 63%
B 4 5% 3 6% 10 12%
C 2 2% 2 3% 7 9%
D 0 0% 1 2% 4 5%
F 0 0% 2 3% 11 13%
A+B 84 97% 56 92% 63 74%
C,D,F 2 3% 5 8% 22 26%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 192 85% 133 81% 107 49%
B 18 8% 14 9% 24 11%
C 8 4% 7 4% 15 7%
D 3 1% 5 3% 14 6%
F 5 2% 6 3% 61 27%
A+B 210 93% 147 89% 131 59%
C,D,F 16 7% 17 11% 90 41%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 75 80% 42 67% 32 35%
B 10 10% 9 15% 7 8%
C 3 3% 4 7% 7 8%
D 2 2% 2 3% 6 6%
F 4 4% 5 8% 38 43%
A+B 85 90% 52 82% 39 43%
C,D,F 9 10% 11 18% 51 57%
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 72 88% 42 74% 72 83%
B 5 6% 7 12% 7 8%
C 0 0% 1 2% 0 0%
D 0 0% 2 4% 2 2%
F 5 6% 5 9% 6 7%
A+B 77 94% 49 86% 79 91%
C,D,F 5 6% 8 14% 8 9%
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 172 77% 51 43% 159 65%
B 25 11% 27 23% 36 15%
C 9 4% 26 22% 19 8%
D 8 4% 4 3% 16 7%
F 8 4% 11 9% 16 7%
A+B 197 89% 78 66% 195 79%
C,D,F 25 11% 41 34% 51 21%
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 54 68% 28 47% 52 60%
B 14 18% 2 3% 10 12%
C 1 1% 9 15% 10 12%
D 4 5% 1 2% 6 7%
F 6 8% 19 32% 8 9%
A+B 68 86% 30 51% 62 72%
C,D,F 11 14% 29 49% 24 28%
ENCLOSED
STORM DRAIN
OPEN
*
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(§) ---,--------- ~ ---------:; ~ - --------:.;.i
·•· * ,,,, ,,.
*
17 HEAL THE BAY // 2023–2024
West Coast Summary
McWay Falls / Monterey County
18 HEAL THE BAY // 2023–2024
CALIFORNIA OVERVIEW
Newport Beach / Orange County
Note: All averages below refer to the five-year-average unless otherwise indicated.
Summer Dry Grades were good across the State with 89% of California beaches receiving A and B grades, though slightly low compared to the historical average of 94%. Winter Dry Grades saw a more significant decrease, with only 66% of beaches achieving A and B grades, underperforming against an 89% average, likely reflecting the impact of sporadic yet intense winter storms. In contrast, Wet Weather Grades actually improved, with 80% receiving A and B grades, compared to the 59% average, possibly due to decreased or delayed sampling activities as a safety response to the heavy storms, leading to the absence of data on the initial flush and highest levels of bacteria.
This year, coastal California received 31% more rainfall than the 10-year average. Although not as extreme as
the previous year, intense storms caused significant
sewage spills and overflows, exacerbating beach water
pollution. As climate change continues to alter global
patterns, we can anticipate significant yearly fluctuations in precipitation and water quality across coastal California.
In this reporting year, over 38 million gallons of sewage entered California's waterways, marking a continued trend of infrastructure challenges under wet conditions. We urge local governments to prioritize infrastructure resilience to better manage wastewater and protect water quality.
The increase in sewage spills not only poses risks to
aquatic life, introducing contaminants like pharmaceuticals and pathogens, but also impacts public health, leading
to beach closures and economic losses for coastal
businesses. Addressing these infrastructure issues is
critical to safeguarding the environment and public health.
II WEST COAST SUMMARY
CALIFORNIA
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 330 78% 146 51% 326 67%
B 46 11% 43 15% 62 13%
C 13 3% 39 14% 35 7%
D 12 3% 10 3% 26 5%
F 22 5% 50 17% 37 8%
A+B 376 89% 189 66% 388 80%
C,D,F 47 11% 99 34% 98 20%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 398 86% 267 80% 220 49%
B 35 8% 30 9% 47 10%
C 13 3% 14 4% 33 7%
D 6 1% 8 2% 28 6%
F 10 2% 15 4% 122 27%
A+B 433 94% 297 89% 267 59%
C,D,F 29 6% 36 11% 183 41%
*
*
19 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA OVERVIEW
Northern California Overview
Northern California consists of all counties from Del Norte County to Marin County.
• Summer Dry Grades in this region were very good
with 90% of beaches receiving A and B grades, which
is on par with average.
• Winter Dry Grades were below average with only 50%
of the beaches tested receiving A and B grades.
• Wet Weather Grades in the northern part of the state
were surprisingly excellent with 100% of beaches
receiving A’s and B’s.
Northern California experienced above-average rainfall
last year, though the increase was not as pronounced as in Central and Southern California. Typically, higher rainfall leads to lower Wet Weather Grades and Winter Grades
due to the influx of pollutants, including bacteria, being washed into the ocean.
Crab Cove / Alameda County / photo: Sabrina Sexton
NORTHERN CALIFORNIA
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 36 88% 0 0% 38 100%
B 1 2% 3 50% 0 0%
C 2 5% 0 0% 0 0%
D 2 5% 1 17% 0 0%
F 0 0% 2 33% 0 0%
A+B 37 90% 3 50% 38 100%
C,D,F 4 10% 3 50% 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 39 89% 1 100% 23 68%
B 2 4% 0 0% 4 11%
C 1 3% 0 0% 2 6%
D 1 2% 0 0% 1 4%
F 1 2% 0 0% 4 11%
A+B 40 94% 1 100% 27 80%
C,D,F 3 6% 0 0% 7 20%
*
*
20 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA OVERVIEW
Central California Overview
Central California consists of all counties from San
Francisco County to San Luis Obispo County.
• Summer Dry Grades were good with 84% of beaches
receiving A and B grades, which is close to the
average.
• Winter Dry Grades were notably poor this year, with
only 45% of beaches receiving A and B grades,
falling below the usual average.
• Wet Weather Grades were low with 79% of the
region’s beaches receiving A and B grades. That is
above the 57% average.
Central California Counties saw 34% more rainfall than
average, which likely accounts for the below average
Winter Dry Grades this past year.
Southern California Overview
Southern California consists of all counties from Santa Barbara County to San Diego County.
• 90% of the region’s Summer Dry Grades were A and
B grades, which is slightly below the average.
• Winter Dry Grades were far below average, with 70%
of SoCal beaches receiving A and B grades.
• Wet Weather Grades were above average with 78%
of the beaches in Southern California receiving A and
B grades when it rained.
Southern California saw a significant increase in
precipitation, with rainfall totals 75% above average. The intense rain events, particularly during the winter, washed more bacteria into the ocean, resulting in lower Winter Dry Grades and fewer Southern California beaches
achieving Honor Roll status. Also, the intense rain events likely made collecting wet samples right after the rain extremely difficult. As a result, this year's wet grades may not accurately reflect the true situation, as the initial flush of pollutants following the rain was often not measured.
CENTRAL CALIFORNIA
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 51 76% 15 31% 60 63%
B 5 7% 7 2% 16 17%
C 2 3% 9 18% 6 6%
D 4 6% 4 1% 8 8%
F 5 7% 14 29% 6 6%
A+B 56 84% 22 45% 76 79%
C,D,F 11 16% 27 55% 20 21%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 62 77% 45 72% 41 45%
B 11 13% 7 12% 11 12%
C 2 2% 3 5% 8 9%
D 2 2% 2 3% 6 6%
F 5 6% 4 7% 25 28%
A+B 72 90% 52 84% 52 57%
C,D,F 8 10% 10 16% 39 43%
SOUTHERN CALIFORNIA
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 243 77% 131 55% 228 66%
B 40 13% 36 15% 43 12%
C 9 3% 30 13% 29 8%
D 6 2% 6 3% 17 5%
F 17 5% 36 15% 29 8%
A+B 283 90% 167 70% 271 78%
C,D,F 32 10% 72 30% 75 22%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 298 88% 222 82% 156 48%
B 22 7% 22 8% 32 10%
C 10 3% 11 4% 23 7%
D 4 1% 6 2% 21 6%
F 4 1% 10 4% 93 29%
A+B 320 95% 244 90% 188 58%
C,D,F 18 5% 27 10% 136 42%
*
* • ,,,,
*
*
21 HEAL THE BAY // 2023–2024
Note: All averages below refer to the five-year-average unless otherwise indicated.
II WEST COAST SUMMARY
CALIFORNIA COUNTY SUMMARIES
Kiddie Beach / Ventura County
photo: Genelle Guzman
Del Norte County
Del Norte County is the northernmost coastal county in
California. There is only one beach that was monitored and, this year, there were no grades issued for this site due to insufficient sampling. Del Norte County received 75 inches of rain this past year, which is more than any other county in California and 16% greater than the historical average of 54 inches. There were a total of 5 sewage spills in Del Norte County but no spills impacted recreational beaches or other waters during this past year.
DEL NORTE COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 0 NO DATA 0 NO DATA 0 NO DATA
B 0 NO DATA 0 NO DATA 0 NO DATA
C 0 NO DATA 0 NO DATA 0 NO DATA
D 0 NO DATA 0 NO DATA 0 NO DATA
F 0 NO DATA 0 NO DATA 0 NO DATA
A+B 0 NO DATA 0 NO DATA 0 NO DATA
C,D,F 0 NO DATA 0 NO DATA 0 NO DATA
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 1 100% 1 100% 0 35%
B 0 0% 0 0% 0 22%
C 0 0% 0 0% 0 22%
D 0 0% 0 0% 0 22%
F 0 0% 0 0% 0 0%
A+B 1 100% 1 100% 1 57%
C,D,F 0 0% 0 0% 1 43%
* .. ,,,,
*
22 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Humboldt County
Summer Dry Grades were very poor this year, with only
20% of beaches receiving A and B grades, which is
below average. It's important to note that these results might be biased due to the limited number of sampling
sites. In contrast, Wet Weather Grades were better than average, with 80% of beaches receiving A and B grades.
Humboldt County does not monitor its beaches in the
winter months so there are no Winter Dry Grades and no
beaches were eligible for the Honor Roll.
Humboldt County received 60 inches of cumulative
rainfall, which is 58% higher than the historical average of 38 inches. Most of the rain fell during the winter months when the beaches are not monitored, so we do not know
the full impact the increased rainfall had on water quality.
There were 17 sewage spills totaling 805,123 gallons in Humboldt County that reached lakes, rivers, or streams.
Many of them were due to sewage overflows as a result
of stormwater exceeding the capacity of their facilities after the heavy rain events.
Mendocino County
Mendocino County’s water quality was very good with all beaches receiving A’s for Summer Dry Grades. Beaches
in this county have not received a Summer Dry Grade
lower than a B in the last seven years. All Mendocino
beaches received A’s for their Wet Weather Grades, which is outstanding. Mendocino County does not monitor its
beaches in the winter months so there were no Winter Dry Grades and no beaches were eligible for the Honor Roll.
Mendocino County is one of two coastal counties this year that actually experienced lower than average rainfall. The County received 21 inches of rain, which is 38% lower than the average of 35 inches.
Mendocino County again experienced a minimal sewage
year. Four spills totaling 206 gallons reached a body of water, but none were close to ocean beaches.
HUMBOLDT COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 1 20% 0 NO DATA 2 40%
B 0 0% 0 NO DATA 2 40%
C 2 40% 0 NO DATA 0 0%
D 2 40% 0 NO DATA 1 20%
F 0 0% 0 NO DATA 0 0%
A+B 1 20% 0 NO DATA 4 80%
C,D,F 4 80% 0 NO DATA 1 20%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 2 36% 0 NO DATA 1 25%
B 1 12% 0 NO DATA 2 40%
C 1 20% 0 NO DATA 0 5%
D 1 16% 0 NO DATA 1 15%
F 1 16% 0 NO DATA 1 15%
A+B 2 48% 0 NO DATA 3 65%
C,D,F 3 52% 0 NO DATA 1 35%
MENDOCINO COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 5 100% 0 NO DATA 5 100%
B 0 0% 0 NO DATA 0 0%
C 0 0% 0 NO DATA 0 0%
D 0 0% 0 NO DATA 0 0%
F 0 0% 0 NO DATA 0 0%
A+B 5 100% 0 NO DATA 5 100%
C,D,F 0 0% 0 NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 5 93% 0 NO DATA 4 86%
B 0 7% 0 NO DATA 0 5%
C 0 0% 0 NO DATA 0 5%
D 0 0% 0 NO DATA 0 5%
F 0 0% 0 NO DATA 0 0%
A+B 5 100% 0 NO DATA 4 91%
C,D,F 0 0% 0 NO DATA 0 9%
* .. ,,,,
_..,_ ,,.
* .. ,,,,
_..,_ ,,.
* .. ,,,,
_..,_
,,.
*
23 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Sonoma County
Sonoma County beaches got straight A’s for Summer
Dry Grades, and 86% of beaches got either an A or
a B for Wet Weather, which is typical for this stretch
of coastline. Sonoma County does not monitor its
beaches in winter months so no Winter Dry Grades
were generated and no beaches from this county were
eligible for the Honor Roll.
Sonoma County is one of two coastal counties that
received lower than average precipitation. In total, 13 inches of rain fell across Sonoma County, which is 50%
lower than the historical average of 26 inches. This is now the fourth straight year of below average rainfall
for Sonoma County.
11 spills with 62,937 gallons of sewage spilled
throughout Sonoma County this past year. In March, a
power outage due to a storm caused a major spill of
partially treated sewage.
Marin County
Summer Dry Grades were top of the class with 96%
beaches receiving A’s and 4% receiving B’s. Wet
Weather Grades were also above average with 96%
receiving either an A or a B. Marin County does not
monitor its beaches in winter months so no Winter
Dry Grades were calculated and no beaches from this
County were eligible for the Honor Roll.
Marin County received 29 inches of rain, which is 40%
above the historical average of 21 inches. However,
most of the rain fell during the winter months when the beaches are not monitored, so we do not know if there
was an impact on water quality.
Close to 15,000 gallons of sewage flowed into Marin
County waterways this past year.
SONOMA COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 7 100% 0 NO DATA 6 86%
B 0 0% 0 NO DATA 0 0%
C 0 0% 0 NO DATA 0 0%
D 0 0% 0 NO DATA 0 0%
F 0 0% 0 NO DATA 1 14%
A+B 7 100% 0 NO DATA 6 86%
C,D,F 0 0% 0 NO DATA 1 14%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 7 97% 0 NO DATA 4 96%
B 0 0% 0 NO DATA 0 4%
C 0 3% 0 NO DATA 0 0%
D 0 0% 0 NO DATA 0 0%
F 0 0% 0 NO DATA 0 0%
A+B 7 97% 0 NO DATA 5 100%
C,D,F 0 3% 0 NO DATA 0 0%
MARIN COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 23 96% 0 NO DATA 25 93%
B 1 4% 0 NO DATA 1 4%
C 0 0% 0 NO DATA 0 0%
D 0 0% 0 NO DATA 0 0%
F 0 0% 0 NO DATA 1 4%
A+B 24 100% 0 NO DATA 26 96%
C,D,F 0 0% 0 NO DATA 1 4%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 24 97% 0 NO DATA 14 68%
B 1 3% 0 NO DATA 2 8%
C 0 0% 0 NO DATA 2 8%
D 0 0% 0 NO DATA 0 1%
F 0 0% 0 NO DATA 3 15%
A+B 25 100% 0 NO DATA 15 76%
C,D,F 0 0% 0 NO DATA 5 24%
*
..... •,•
*
..... ., . *
..... .,.
*
24 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Crane Cove/San Francisco / Credit: Corey Chrisman
San Francisco County
94% of San Francisco’s Summer Dry Grades were either
A’s or B’s this year, which is similar to average.
Wet Weather Grades were above average with 83% of
beaches receiving A and B grades.
However, Winter Dry Grades were disappointing as only
47% of beaches received either an A or a B, likely due to sewer overflows after major winter storms.
San Francisco County received 29 inches of rain, which
is a 40% increase from the historical average of 21 inches.
San Francisco has a combined sewer system, meaning rain runoff flows into the sewer system and gets treated instead of flowing into the ocean. Therefore, increased rainfall did not impact Wet Weather Grades as much this past year.
Approximately 4.6 million gallons of sewage were spilled in San Francisco County, with two major incidents in February and March each exceeding one million gallons. Although
most of the spill volume was recovered, these significant spill events, involving untreated or partially treated
stormwater and wastewater, are cause for serious concern.
SAN FRANCISCO COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 14 88% 6 32% 13 72%
B 1 6% 3 16% 2 11%
C 1 6% 3 16% 1 6%
D 0 0% 2 11% 0 0%
F 0 0% 5 26% 2 11%
A+B 15 94% 9 47% 15 83%
C,D,F 1 6% 10 53% 3 17%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 14 86% 12 79% 5 27%
B 2 11% 2 11% 4 22%
C 0 1% 0 3% 2 10%
D 0 0% 0 3% 1 6%
F 0 1% 1 4% 6 36%
A+B 15 97% 13 90% 9 49%
C,D,F 0 3% 1 10% 9 51%
:•·-,,,
* .. ,,,,
* .. ,,,,
25 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Keller Beach, Richmond / Contra Costa County
East Bay: Alameda County
and Contra Costa County
The East Bay had outstanding water quality over the last year with 100% of the beaches earning either an A or a B for Summer Dry Grades again for a second year. For Wet
Weather Grades, 88% of the beaches received A and B
grades, which is substantially higher than average. East Bay beaches are monitored in winter months, but no
Winter Dry Grades were calculated this year because most winter data was categorized as wet weather.
Alameda County and Contra Costa County received 29
inches of rain, which is a 40% increase from the historical average of 21 inches. More rainfall usually results in worse water quality because more pollutants are washed into the ocean, but the East Bay has bucked that trend this year.
Last year, East Bay experienced significant sewage spills, totaling over 1 million gallons. Notably, a single event in El Sobrante saw over 500,000 gallons of sewage spill from a maintenance hole. These large volumes of spilled sewage are deeply concerning.
EAST BAY COUNTIES
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 7 88% 0 NO DATA 6 75%
B 1 13% 0 NO DATA 1 13%
C 0 0% 0 NO DATA 1 13%
D 0 0% 0 NO DATA 0 0%
F 0 0% 0 NO DATA 0 0%
A+B 8 100% 0 NO DATA 7 88%
C,D,F 0 0% 0 NO DATA 1 13%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 77% 2 70% 3 41%
B 1 15% 1 20% 1 18%
C 0 3% 0 10% 1 12%
D 0 5% 0 0% 0 6%
F 0 0% 0 0% 2 24%
A+B 7 92% 2 90% 4 59%
C,D,F 1 8% 0 10% 3 41%
* • ,,,,
* • ,,,,
26 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Tunitas Beach / San Mateo County / photo: David Baron
San Mateo County
Summer Dry Grades were mediocre with only 61% of
beaches earning A and B grades. This is slightly below
the average for this county, which has struggled with
water quality in recent years.
Wet Weather Grades were bottom of the class as only
56% of beaches earned A and B grades. This is an
improvement compared to last year’s 31%, but still below average.
Winter Dry Grades performed better, with 50% of
beaches receiving A and B grades, which is above the
average of 37% for this county.
San Mateo County is home to two of this year’s Beach
Bummers: Lake Shore Park and Linda Mar Beach. Lake
Shore is one of the beaches that are categorized as
enclosed, which means they do not receive sufficient
water circulation. Linda Mar Beach is impacted by
pollution from San Pedro Creek. This marks the sixth
consecutive report where San Mateo County has multiple
Beach Bummers.
San Mateo County experienced a 40% increase in rainfall last year, receiving 29 inches compared to the historical average of 21 inches. Given the enclosed nature of many of its beach locations, it's not surprising that the Wet Weather Grades consistently fell short.
Last year, approximately 162,000 gallons of sewage were spilled into the ocean, lakes, rivers, and streams of San Mateo County, representing a relatively small volume
compared to previous years.
SAN MATEO COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 13 57% 9 35% 11 41%
B 1 4% 4 15% 4 15%
C 1 4% 2 8% 2 7%
D 3 13% 2 8% 6 22%
F 5 22% 9 35% 4 15%
A+B 14 61% 13 50% 15 56%
C,D,F 9 39% 13 50% 12 44%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 8 46% 10 45% 7 28%
B 4 22% 4 16% 2 9%
C 1 6% 3 12% 3 11%
D 1 6% 2 8% 3 10%
F 4 21% 5 20% 10 41%
A+B 12 68% 14 61% 9 37%
C,D,F 6 32% 9 39% 16 63%
*
* .. ,,,,
27 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Santa Cruz County
Summer Dry Grades were great and a little higher than
average this year with 93% of the beaches receiving A and B grades.
Wet Weather Grades were above the average with 81% of
the beaches receiving A or B grades.
Winter Dry Grades were disappointing as none of the
beaches received an A or B grade; this is far lower than the average of 88%. All beaches ended up with C grades
for winter.
Santa Cruz County received 32 inches of rain, which is 19% above the historical average of 27 inches.
No major sewage spills happened in Santa Cruz County
last year. 13 minor spills sent a total of 4,390 gallons of sewage into waterways.
Monterey County
Monterey County’s beaches received all A’s for Summer
Dry grades, which is better than average.
Wet Weather Grades were very good and above average
with 100% of the County’s beaches receiving A and B
grades.
Monterey County does not monitor its beaches in winter
months so no Winter Dry Grades were generated and no
beaches from this county were eligible for the Honor Roll.
Monterey County received 20 inches of rain, which is
11% higher than the historical average of 18 inches. We do not know the full impact this increase in precipitation had on water quality because Monterey County does
not monitor its beaches in the winter, when most rainfall occurs.
Overall, 36 spills sent 2,986 gallons of sewage into
waterways across the county in this reporting year.
SANTA CRUZ COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 11 79% 0 0% 7 44%
B 2 14% 0 0% 6 38%
C 0 0% 4 100% 1 6%
D 1 7% 0 0% 2 13%
F 0 0% 0 0% 0 0%
A+B 13 93% 0 0% 13 81%
C,D,F 1 7% 4 100% 3 19%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 9 69% 6 71% 4 27%
B 3 20% 1 17% 2 15%
C 1 5% 1 7% 2 13%
D 0 2% 0 2% 1 9%
F 1 5% 0 2% 5 36%
A+B 12 89% 7 88% 6 41%
C,D,F 1 11% 1 12% 9 59%
MONTEREY COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 100% 0 NO DATA 7 88%
B 0 0% 0 NO DATA 1 13%
C 0 0% 0 NO DATA 0 0%
D 0 0% 0 NO DATA 0 0%
F 0 0% 0 NO DATA 0 0%
A+B 6 100% 0 NO DATA 8 100%
C,D,F 0 0% 0 NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 91% 3 92% 5 86%
B 1 9% 0 8% 0 0%
C 0 0% 0 0% 0 0%
D 0 0% 0 0% 0 0%
F 0 0% 0 0% 1 14%
A+B 7 100% 3 100% 5 86%
C,D,F 0 0% 0 0% 1 14%
*
*
* .. ,,,,
* .. ,,,,
28 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
San Luis Obispo County
In typical fashion, San Luis Obispo County’s annual Summer Dry Grades were usually very good, with most beaches
receiving either A’s or B’s. However, this year we saw a reduction in sampling events in San Luis Obispo, resulting in no beaches having enough samples to qualify for grades.
Wet Weather Grades were on par with the average, with 95% of the beaches receiving A and B grades.
San Luis Obispo County beaches are monitored in the winter.
However, this past winter was so rainy that most of the winter samples were categorized under wet weather. Therefore, we were not able to issue Winter Dry Grades.
San Luis Obispo County received 20 inches of rain, which is 63% higher than the average of 12 inches.
San Luis Obispo County had a relatively sewage-free year, with 7 spills sending a total of 75 gallons of sewage into its waterways in 2023–2024.
Santa Barbara County
Summer Dry Grades were good this past year with 100% of beaches receiving either A or B gradings; Wet Weather Grades were not as good with 75% earning A and B grades, which is still higher than the average of 54% for Santa Barbara County; Winter Dry Grades were disappointing and below average with only 63% of the beaches earning A and B grades.
Santa Barbara County received 19 inches of rainfall this past year, which was 64% higher than the average of 12 inches.
However, there was not a noticeable dip in wet weather water quality as a result.
17 sewage spills totaling 1,030,945 gallons flowed into the ocean, rivers, lakes, and streams throughout the county. Over one million gallons of untreated sewage were spilled from a main pipe maintained by the Goleta West Sanitary District on February 16 and 17, contaminating the Goleta Slough and adjacent beaches. This incident, the largest reported in Santa Barbara County in the past decade, resulted in the closure of a
2.5-mile stretch of beach near Goleta Beach Park.
SAN LUIS OBISPO COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 0 NO DATA 0 NO DATA 16 84%
B 0 NO DATA 0 NO DATA 2 11%
C 0 NO DATA 0 NO DATA 1 5%
D 0 NO DATA 0 NO DATA 0 0%
F 0 NO DATA 0 NO DATA 0 0%
A+B 0 NO DATA 0 NO DATA 18 95%
C,D,F 0 NO DATA 0 NO DATA 1 5%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 19 98% 15 96% 16 85%
B 0 2% 1 4% 1 7%
C 0 0% 0 0% 0 2%
D 0 0% 0 0% 0 2%
F 0 0% 0 0% 1 3%
A+B 19 100% 15 100% 18 93%
C,D,F 0 0% 0 0% 1 7%
SANTA BARBARA COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 10 67% 2 25% 7 44%
B 5 33% 3 38% 5 31%
C 0 0% 2 25% 3 19%
D 0 0% 1 13% 0 0%
F 0 0% 0 0% 1 6%
A+B 15 100% 5 63% 12 75%
C,D,F 0 0% 3 38% 4 25%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 14 88% 13 86% 7 43%
B 1 6% 2 14% 2 11%
C 1 5% 0 0% 2 10%
D 0 1% 0 0% 2 10%
F 0 0% 0 0% 4 26%
A+B 15 94% 15 100% 9 54%
C,D,F 1 6% 0 0% 7 46%
*
*
*
* • ,,,,
29 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Ventura County
True to form, 97% of Ventura County’s beaches received A and B Summer Dry Grades.
Wet Weather Grades went above the average this past year with 85% earning A’s and B’s.
Winter Dry grades were good, as usual, in Ventura County. 92% of the beaches received A’s or B’s, consistent with the historical average.
Ventura County received 21 inches of rain, which is 87% higher than the historical average of 11 inches. This increase likely had negative impacts on this year’s Wet Weather Grades.
In total, 14,520 gallons of sewage were spilled into Ventura County waterways. Following a significant spill in February that leaked into a storm drain, beach closures were issued for areas one mile north and one mile south of the Ventura River outfall.
Los Angeles County
Los Angeles County had great Summer Dry Grades with 81% of its beaches earning A and B grades, but lower than the historical average; Wet Weather Grades were relatively good, with 66% of beaches achieving A's and B's, significantly better than the usual average of 39%; however, Winter Dry Grades significantly declined, with only 37% of beaches receiving A and B grades, greatly impacted by this winter's severe rainstorms.
Persistent Beach Bummers included Marina del Rey Mother’s Beach and Santa Monica Pier, both maintaining their
unfortunate record of poor water quality.
Los Angeles County experienced an exceptional increase in rainfall, receiving 21 inches — 93% above the historical average of 11 inches. This dramatic uptick in precipitation, coupled with ongoing sewage spill issues following major storms, contributed to notably poor Winter Dry Grades and Wet Weather Grades.
The county also saw 185 sewage spills totaling approximately 9 million gallons, a stark increase from the 330,396 gallons reported the previous year. In February, about 8 million gallons of raw waste entered the Dominguez Channel, subsequently affecting Cabrillo Beach and necessitating beach closures.
VENTURA COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 27 90% 7 54% 31 78%
B 2 7% 5 38% 3 8%
C 0 0% 1 8% 3 8%
D 0 0% 0 0% 3 8%
F 1 3% 0 0% 0 0%
A+B 29 97% 12 92% 34 85%
C,D,F 1 3% 1 8% 6 15%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 36 98% 11 91% 19 66%
B 0 1% 0 2% 1 4%
C 0 1% 0 2% 2 7%
D 0 0% 0 3% 2 5%
F 0 0% 0 2% 5 18%
A+B 37 99% 11 93% 20 70%
C,D,F 0 1% 1 7% 9 30%
LOS ANGELES COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 52 62% 10 18% 45 49%
B 16 19% 11 19% 15 16%
C 5 6% 18 32% 10 11%
D 5 6% 2 4% 9 10%
F 6 7% 16 28% 12 13%
A+B 68 81% 21 37% 60 66%
C,D,F 16 19% 36 63% 31 34%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 75 83% 59 73% 26 28%
B 8 9% 8 10% 11 11%
C 4 4% 6 8% 8 8%
D 2 2% 2 3% 8 8%
F 2 2% 5 6% 42 44%
A+B 83 92% 67 83% 37 39%
C,D,F 7 8% 13 17% 58 61%
* • ,,,,
*
* • ,,,,
*
30 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
Newport Harbor / Orange County
Orange County
Summer Dry Grades were close to the average, with 95%
of the beaches receiving A and B grades.
Wet Weather Grades exceeded the average, with 89% of
the beaches achieving A and B grades.
Winter Dry Grades were good, though slightly lower than average, with 91% of the beaches scoring A and B grades.
Orange County experienced a significant increase in
rainfall, receiving 19 inches, which is 94% higher than the historical average of 10 inches. Despite this substantial increase, there was no noticeable negative impact on the Wet Weather and Winter Dry Grades. Orange County also
dominated the Honor Roll with 9 beaches making the list.
In the 2023–2024 period, a total of 210,667 gallons of
sewage spilled into the waterways of Orange County.
ORANGE COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 111 83% 82 77% 102 75%
B 16 12% 15 14% 19 14%
C 4 3% 7 7% 11 8%
D 1 1% 2 2% 3 2%
F 1 1% 1 1% 1 1%
A+B 127 95% 97 91% 121 89%
C,D,F 6 5% 10 9% 15 11%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 115 92% 94 88% 56 49%
B 6 5% 7 7% 12 11%
C 2 1% 2 2% 9 8%
D 1 0% 1 1% 7 6%
F 1 1% 2 2% 31 27%
A+B 121 97% 102 95% 68 60%
C,D,F 4 3% 5 5% 46 40%
*
*
31 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY CALIFORNIA COUNTY SUMMARIES
San Diego County
In May 2022, San Diego County implemented a new
bacteria testing method using ddPCR technology at
approximately one-third of its beaches. This advanced
method detects bacterial genetic material in water,
providing faster and more precise results than traditional culturing methods. Although Heal the Bay supports the
adoption of ddPCR for its rapidity and precision, our
current Beach Report Card grading system is designed for data from cultured bacteria, posing compatibility issues.
To maintain insights into water quality at these beaches, we analyzed the frequency with which the ddPCR-
monitored beaches in San Diego County exceeded
California's state-approved standards, using a
recommended conversion factor. Our analysis revealed
that these beaches exceeded standards in 50%–76% of
samples taken, a significant increase from the 5%–10%
exceedance rates observed with older culturing methods.
This discrepancy does not necessarily indicate higher
pollution levels but rather reflects the heightened
sensitivity of ddPCR testing.
Heal the Bay is actively exploring ways to integrate ddPCR data into our Beach Report Card framework. Meanwhile,
we recommend that San Diego County continue to
use traditional culturing methods alongside ddPCR to
ensure consistent water quality assessments until these methodological discrepancies can be fully addressed.
We were still able to grade most of San Diego County’s
beaches. And among those beaches, Summer Dry Grades
were good, though slightly lower than average, with 88% of the beaches receiving A and B grades.
Wet Weather Grades were not as good and slightly below
average with only 73% of the beaches receiving A and B
grades.
Winter Dry Grades were below average with 63% of
beaches receiving A and B grades.
This year, the Tijuana River Mouth, Tijuana Slough, Border Field State Park, and Imperial Beach at Seacoast Drive all landed on the Beach Bummer list, making San Diego the
county with the highest number of bummers. This issue
is exacerbated by the millions of gallons of untreated
sewage that regularly flow into the ocean via the Tijuana River. San Diego County was also home to two Honor Roll beaches: Point Loma Lighthouse and Moonlight Beach.
San Diego County received 12 inches of rain last year,
which is 31% higher than the historical average of 10 inches.
This increase in rainfall, especially the major rain storms, account for the below average Wet Weather Grades.
The historic rain event this winter delivered an
unprecedented 3 inches of rain in just three hours. The intense rainfall led to severe flooding and significant inflows to the wastewater conveyance system,
overwhelming it and resulting in overflows. In total, over 20 million gallons of sewage were spilled in San Diego this past year, accounting for more than half of the total spill volume across California.
SAN DIEGO COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 43 86% 30 59% 43 72%
B 1 2% 2 4% 1 2%
C 0 0% 2 4% 2 3%
D 0 0% 1 2% 1 2%
F 6 12% 16 31% 13 22%
A+B 44 88% 32 63% 44 73%
C,D,F 6 12% 19 37% 16 27%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 57 84% 43 81% 47 69%
B 7 10% 4 8% 6 9%
C 3 4% 2 3% 3 4%
D 1 1% 2 4% 3 4%
F 1 1% 2 4% 9 14%
A+B 64 93% 48 89% 53 78%
C,D,F 5 7% 6 11% 15 22%
*
*
32 HEAL THE BAY // 2023–2024
OREGON COUNTY SUMMARIES
II WEST COAST SUMMARY
Note: All averages below refer to the five-year-average unless otherwise indicated.
Oregon’s Department of Environmental Quality monitors water quality at ocean beaches from Memorial Day through Labor Day, testing for the FIB Enterococcus. This contrasts with California, where water quality monitoring is required from April 1 to October 31 and includes tests for three indicator bacteria. Funding for Oregon's beach monitoring is provided entirely by the USEPA under the Beaches Environmental Assessment and Coastal Health (BEACH) Act.
For many years, a large part of Oregon’s beaches have
gone ungraded by us due to insufficient sampling
frequency. Our criteria for assigning a beach grade requires that beaches be sampled at least 75% of the weeks
during the summer season, which spans from Memorial
Day to Labor Day. Unfortunately, this standard often isn't met, preventing us from issuing grades for most beaches.
Additionally, no Oregon beaches are monitored during
winter, so we cannot provide Winter Dry Grades.
This year, only six counties in Oregon received Summer Dry Grades and Wet Weather grades. Despite the limited data, 100% of the monitored Oregon beaches received
excellent Summer Dry Grades of A or B, and 79%
achieved A and B grades in Wet Weather, surpassing
the state’s historical average of 67%.
It is disappointing that under-sampling has limited
our ability to issue more comprehensive grades. We
continue to encourage Oregon to increase funding
for ocean water quality monitoring. Expanding
this program is crucial to protect public health and
ensure that residents and visitors can safely enjoy
Oregon’s beautiful beaches.
Seaside Beach / Clatsop County
33 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY OREGON COUNTY SUMMARIES
OREGON
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 58 71% NO DATA NO DATA 58 74%
B 24 29% NO DATA NO DATA 4 5%
C 0 0% NO DATA NO DATA 6 8%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 10 13%
A+B 82 100% NO DATA NO DATA 62 79%
C,D,F 0 0% NO DATA NO DATA 16 21%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 100% NO DATA NO DATA 18 62%
B 0 0% NO DATA NO DATA 1 5%
C 0 0% NO DATA NO DATA 3 9%
D 0 0% NO DATA NO DATA 2 8%
F 0 0% NO DATA NO DATA 5 16%
A+B 6 100% NO DATA NO DATA 20 67%
C,D,F 0 0% NO DATA NO DATA 10 33%
CLATSOP COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 7 64% NO DATA NO DATA 7 64%
B 4 36% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 4 36%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 11 100% NO DATA NO DATA 7 64%
C,D,F 0 0% NO DATA NO DATA 4 36%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 3 100% NO DATA NO DATA 4 62%
B 0 0% NO DATA NO DATA 0 3%
C 0 0% NO DATA NO DATA 0 7%
D 0 0% NO DATA NO DATA 0 7%
F 0 0% NO DATA NO DATA 1 21%
A+B 3 100% NO DATA NO DATA 4 66%
C,D,F 0 0% NO DATA NO DATA 2 34%
COOS COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 9 100% NO DATA NO DATA 9 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 9 100% NO DATA NO DATA 9 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A NO DATA NO DATA NO DATA NO DATA 3 65%
B NO DATA NO DATA NO DATA NO DATA 1 15%
C NO DATA NO DATA NO DATA NO DATA 0 10%
D NO DATA NO DATA NO DATA NO DATA 0 0%
F NO DATA NO DATA NO DATA NO DATA 0 10%
A+B NO DATA NO DATA NO DATA NO DATA 3 80%
C,D,F NO DATA NO DATA NO DATA NO DATA 1 20%
LINCOLN COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 9 47% NO DATA NO DATA 15 79%
B 10 53% NO DATA NO DATA 4 21%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 19 100% NO DATA NO DATA 19 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 2 100% NO DATA NO DATA 6 67%
B 0 0% NO DATA NO DATA 0 4%
C 0 0% NO DATA NO DATA 1 10%
D 0 0% NO DATA NO DATA 1 10%
F 0 0% NO DATA NO DATA 1 8%
A+B 2 100% NO DATA NO DATA 7 71%
C,D,F 0 0% NO DATA NO DATA 3 29%
* * .. ,,,,
* * .. ,,,,
* * .. ,,,,
* *
34 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY OREGON COUNTY SUMMARIES
Heceta Head Lighthouse / Lane County / photo: Rick Obst
LANE COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA
B NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA
C NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA
D NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA
F NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA
A+B NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA
C,D,F NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A NO DATA NO DATA NO DATA NO DATA 1 55%
B NO DATA NO DATA NO DATA NO DATA 0 0%
C NO DATA NO DATA NO DATA NO DATA 0 18%
D NO DATA NO DATA NO DATA NO DATA 0 0%
F NO DATA NO DATA NO DATA NO DATA 1 27%
A+B NO DATA NO DATA NO DATA NO DATA 1 55%
C,D,F NO DATA NO DATA NO DATA NO DATA 1 45%
CURRY COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A NO DATA NO DATA NO DATA NO DATA 13 100%
B NO DATA NO DATA NO DATA NO DATA 0 0%
C NO DATA NO DATA NO DATA NO DATA 0 0%
D NO DATA NO DATA NO DATA NO DATA 0 0%
F NO DATA NO DATA NO DATA NO DATA 0 0%
A+B NO DATA NO DATA NO DATA NO DATA 13 100%
C,D,F NO DATA NO DATA NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A NO DATA NO DATA NO DATA NO DATA 0 14%
B NO DATA NO DATA NO DATA NO DATA 0 0%
C NO DATA NO DATA NO DATA NO DATA 0 0%
D NO DATA NO DATA NO DATA NO DATA 0 0%
F NO DATA NO DATA NO DATA NO DATA 1 86%
A+B NO DATA NO DATA NO DATA NO DATA 0 14%
C,D,F NO DATA NO DATA NO DATA NO DATA 1 86%
TILLAMOOK COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 1 100% NO DATA NO DATA 4 70%
B 0 0% NO DATA NO DATA 0 3%
C 0 0% NO DATA NO DATA 0 7%
D 0 0% NO DATA NO DATA 1 13%
F 0 0% NO DATA NO DATA 0 7%
A+B 1 100% NO DATA NO DATA 4 73%
C,D,F 0 0% NO DATA NO DATA 2 27%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 1 100% NO DATA NO DATA 4 70%
B 0 0% NO DATA NO DATA 0 3%
C 0 0% NO DATA NO DATA 0 7%
D 0 0% NO DATA NO DATA 1 13%
F 0 0% NO DATA NO DATA 0 7%
A+B 1 100% NO DATA NO DATA 4 73%
C,D,F 0 0% NO DATA NO DATA 2 27%
_..,_
.,.
* ..... •,•
* .. ,,,,
_..,_ . ,.
* ..... ., . *
* *
35 HEAL THE BAY // 2023–2024
WASHINGTON COUNTY
SUMMARIES
II WEST COAST SUMMARY
Note: All averages below refer to the five-year-average unless otherwise indicated.
Washington’s Department of Ecology monitors water quality at ocean beaches from Memorial Day through Labor Day, testing for Enterococcus. This differs from California, where testing from April 1 to October 31 includes three indicator bacteria. Approximately 80% of Washington's funding for ocean beach monitoring is sourced from the BEACH Act, with the remaining 20% provided by the USEPA ’s National Estuary Program’s Pathogen Prevention, Reduction, and Control Grant. The Makah Tribe in Clallam County also conducts their own beach monitoring through separate BEACH Program Tribal funding, uniquely monitoring their beaches on a weekly basis throughout the year. We commend the Makah Tribe for their comprehensive monitoring approach and urge the Washington Department of Ecology to adopt similar practices across the state to ensure consistent water quality assessments.
Washington's Summer Dry Grades were impressive,
with 97% of the beaches scoring A and B grades,
surpassing the state average of 92%. Wet Weather
Grades were also excellent, with 93% of beaches
achieving A and B grades, indicating superior water
quality even during adverse conditions.
Unfortunately, due to the lack of winter monitoring by the state, we were unable to issue Winter Dry Grades for most Washington beaches. The exception is the beaches monitored by the Makah Tribe, where all five monitored beaches received A or B grades during the winter months. This highlights the benefits of year- round monitoring and underscores the need for expanded
efforts to provide comprehensive data across all seasons.
Point No Point Beach / Kitsap County
WASHINGTON
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 56 92% 4 80% 51 88%
B 3 5% 1 20% 3 5%
C 1 2% 0 0% 3 5%
D 1 2% 0 0% 1 2%
F 0 0% 0 0% 0 0%
A+B 59 97% 5 100% 54 93%
C,D,F 2 3% 0 0% 4 7%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 127 89% NO DATA NO DATA 129 92%
B 4 3% NO DATA NO DATA 4 3%
C 4 3% NO DATA NO DATA 4 3%
D 3 2% NO DATA NO DATA 2 1%
F 4 3% NO DATA NO DATA 2 2%
A+B 131 92% NO DATA NO DATA 133 94%
C,D,F 11 8% NO DATA NO DATA 8 6%
* * .. ,,,,
36 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY WASHINGTON COUNTY SUMMARIES
SKAGIT COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 1 100% NO DATA NO DATA 1 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 1 100% NO DATA NO DATA 1 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 2 92% NO DATA NO DATA 2 75%
B 0 0% NO DATA NO DATA 0 6%
C 0 8% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 1 19%
A+B 2 92% NO DATA NO DATA 3 81%
C,D,F 0 8% NO DATA NO DATA 1 19%
KITSAP COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 67% NO DATA NO DATA 7 78%
B 2 22% NO DATA NO DATA 1 11%
C 1 11% NO DATA NO DATA 1 11%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 8 89% NO DATA NO DATA 8 89%
C,D,F 1 11% NO DATA NO DATA 1 11%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 30 92% NO DATA NO DATA 29 89%
B 1 3% NO DATA NO DATA 1 4%
C 0 1% NO DATA NO DATA 1 3%
D 1 4% NO DATA NO DATA 1 3%
F 0 0% NO DATA NO DATA 0 1%
A+B 31 95% NO DATA NO DATA 30 93%
C,D,F 2 5% NO DATA NO DATA 2 7%
CLALLAM COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 8 100% 4 80% 8 100%
B 0 0% 1 20% 0 0%
C 0 0% 0 0% 0 0%
D 0 0% 0 0% 0 0%
F 0 0% 0 0% 0 0%
A+B 8 100% 5 100% 8 100%
C,D,F 0 0% 0 0% 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 10 96% 4 100% 13 96%
B 0 4% 0 0% 1 4%
C 0 0% 0 0% 0 0%
D 0 0% 0 0% 0 0%
F 0 0% 0 0% 0 0%
A+B 10 100% 4 100% 13 100%
C,D,F 0 0% 0 0% 0 0%
SNOHOMISH COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 100% NO DATA NO DATA 5 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 6 100% NO DATA NO DATA 5 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 13 93% NO DATA NO DATA 18 95%
B 0 1% NO DATA NO DATA 1 3%
C 0 3% NO DATA NO DATA 0 1%
D 0 1% NO DATA NO DATA 0 1%
F 0 1% NO DATA NO DATA 0 0%
A+B 13 94% NO DATA NO DATA 18 97%
C,D,F 1 6% NO DATA NO DATA 1 3%
* * • ,,,,
* *
* *
* *
37 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY WASHINGTON COUNTY SUMMARIES
WHATCOM COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 3 75% NO DATA NO DATA 3 75%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 1 25%
D 1 25% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 3 75% NO DATA NO DATA 3 75%
C,D,F 1 25% NO DATA NO DATA 1 25%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 2 43% NO DATA NO DATA 7 76%
B 1 14% NO DATA NO DATA 0 2%
C 0 10% NO DATA NO DATA 1 9%
D 0 5% NO DATA NO DATA 0 2%
F 1 29% NO DATA NO DATA 1 11%
A+B 2 57% NO DATA NO DATA 7 78%
C,D,F 2 43% NO DATA NO DATA 2 22%
ISLAND COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 4 100% NO DATA NO DATA 3 75%
B 0 0% NO DATA NO DATA 1 25%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 4 100% NO DATA NO DATA 4 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 5 68% NO DATA NO DATA 9 94%
B 1 13% NO DATA NO DATA 0 3%
C 1 8% NO DATA NO DATA 0 0%
D 0 3% NO DATA NO DATA 0 0%
F 1 8% NO DATA NO DATA 0 3%
A+B 6 82% NO DATA NO DATA 9 97%
C,D,F 1 18% NO DATA NO DATA 0 3%
KING COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 10 100% NO DATA NO DATA 8 89%
B 0 0% NO DATA NO DATA 1 11%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 10 100% NO DATA NO DATA 9 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 17 91% NO DATA NO DATA 28 93%
B 0 1% NO DATA NO DATA 1 3%
C 0 2% NO DATA NO DATA 1 3%
D 0 2% NO DATA NO DATA 1 2%
F 1 3% NO DATA NO DATA 0 0%
A+B 17 92% NO DATA NO DATA 29 96%
C,D,F 1 8% NO DATA NO DATA 1 4%
JEFFERSON COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 4 100% NO DATA NO DATA 4 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 4 100% NO DATA NO DATA 4 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 77% NO DATA NO DATA 8 94%
B 0 5% NO DATA NO DATA 0 0%
C 0 5% NO DATA NO DATA 1 6%
D 1 8% NO DATA NO DATA 0 0%
F 0 5% NO DATA NO DATA 0 0%
A+B 6 82% NO DATA NO DATA 8 94%
C,D,F 1 18% NO DATA NO DATA 1 6%
* *
..... ,,.
* ..... ,,.
*
* .. ,,,,
* .. ,,,,
* *
38 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY WASHINGTON COUNTY SUMMARIES
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 23 97% NO DATA NO DATA 17 89%
B 0 1% NO DATA NO DATA 1 3%
C 0 1% NO DATA NO DATA 1 4%
D 0 1% NO DATA NO DATA 0 2%
F 0 0% NO DATA NO DATA 0 1%
A+B 23 98% NO DATA NO DATA 17 93%
C,D,F 0 2% NO DATA NO DATA 1 7%
PIERCE COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 6 86% NO DATA NO DATA 5 71%
B 1 14% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 1 14%
D 0 0% NO DATA NO DATA 1 14%
F 0 0% NO DATA NO DATA 0 0%
A+B 7 100% NO DATA NO DATA 5 71%
C,D,F 0 0% NO DATA NO DATA 2 29%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 2 80% NO DATA NO DATA 4 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 1 20% NO DATA NO DATA 0 0%
A+B 2 80% NO DATA NO DATA 4 100%
C,D,F 1 20% NO DATA NO DATA 0 0%
THURSTON COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 2 100% NO DATA NO DATA 2 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 2 100% NO DATA NO DATA 2 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 8 93% NO DATA NO DATA 9 100%
B 0 2% NO DATA NO DATA 0 0%
C 0 4% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 9 96% NO DATA NO DATA 9 100%
C,D,F 0 4% NO DATA NO DATA 0 0%
GRAY’S HARBOR COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 3 100% NO DATA NO DATA 3 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 3 100% NO DATA NO DATA 3 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
MASON COUNTY
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 3 100% NO DATA NO DATA 2 100%
B 0 0% NO DATA NO DATA 0 0%
C 0 0% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 3 100% NO DATA NO DATA 2 100%
C,D,F 0 0% NO DATA NO DATA 0 0%
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 8 89% NO DATA NO DATA 7 100%
B 0 2% NO DATA NO DATA 0 0%
C 1 9% NO DATA NO DATA 0 0%
D 0 0% NO DATA NO DATA 0 0%
F 0 0% NO DATA NO DATA 0 0%
A+B 8 91% NO DATA NO DATA 7 100%
C,D,F 1 9% NO DATA NO DATA 0 0%
* *
* *
*
_..,_ . ,.
* • ,,,,
_..,_
.,.
* *
39 HEAL THE BAY // 2023–2024
II WEST COAST SUMMARY
TIJUANA, MEXICO
SUMMARY
The Tijuana area, home to over 2 million people, boasts beaches crucial for recreation and tourism. We analyzed weekly monitoring data collected by the County of San
Diego for three beaches: Playa El Faro, Playa El Vigia, and Playa Blanca. During the dry summer months, all three
beaches consistently received F grades. Apart from Playa El Vigia, which earned a D during wet weather, these
beaches also recorded straight F's in all other conditions.
These consistently poor grades pose a significant health risk to beachgoers and present challenges for the local tourism economy. This section of the coastline suffers from chronic sewage pollution throughout the year, exacerbated by inadequate sewage infrastructure. A primary source of this pollution is the Punta Bandera treatment plant south of the city, which intermittently discharges untreated or partially treated sewage into the ocean.
6 Prevailing ocean
currents carry sewage pollution north to the Tijuana
beaches as well as Imperial Beach. The USEPA is actively pursuing improvements to the sewage infrastructure on
both sides of the border, which are expected to enhance water quality in the area.
7 However, given the extensive
and complex issues within the Tijuana River Watershed,
these efforts should be viewed as initial steps toward a more comprehensive solution.
6 https://wildcoast.org/wp-content/uploads/2019/08/Issue-Briefing-Tijuana-River-P ollution. pdf
7 https://www. epa.gov/sustainable-water-infrastructure/usmca-tijuana-river- watershed#solutions
photo: Cesar Bojorquez
5 YEAR AVERAGE Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 0 0% 0 0% 0 0%
B 0 0% 0 0% 0 0%
C 1 33% 0 0% 0 0%
D 1 33% 1 33% 0 0%
F 1 33% 1 67% 2 100%
A+B 0 0% 0 0% 0 0%
C,D,F 3 100% 2 100% 2 100%
2023–2024 Summer Dry Winter Dry Wet Weather
GRADE # % # % # %
A 0 0% 0 0% 0 0%
B 0 0% 0 0% 0 0%
C 0 0% 0 0% 0 0%
D 0 0% 0 0% 1 33%
F 3 100% 3 100% 2 67%
A+B 0 0% 0 0% 0 0%
C,D,F 3 100% 3 100% 3 100%
TIJUANA, MEXICO
*
*
40 HEAL THE BAY // 2023–2024
BEACH NEWS
Mission Bay Park / San Diego County
41 HEAL THE BAY // 2023–2024
III BEACH NEWS
SPECIAL SECTION
Addressing Sewage Pollution in the Tijuana River Watershed Binational Efforts and Infrastructure
Development
Addressing these complex transboundary pollution
challenges requires coordinated binational solutions. The International Boundary and Water Commission, along
with local and federal agencies from the U.S. and Mexico, has been instrumental in developing infrastructure and
operational strategies to mitigate these issues. Recent efforts have focused on enhancing existing facilities and constructing new infrastructure to manage and treat the sewage effectively.
For example, significant repairs to a major pipeline in Tijuana are expected to drastically reduce sewage flows into the Tijuana River by up to 100% of daily flows, directly impacting the volume of pollutants entering U.S. waters.
These repairs are part of broader efforts that include the upgrade and expansion of the South Bay International
Wastewater Treatment Plant (ITP) in San Diego, which
treats a portion of Tijuana's sewage and runoff. The
planned expansion from 25 million gallons per day (mgd) to 50 mgd will significantly enhance the plant's capacity to manage and treat sewage, especially during storm
events. Additionally, Mexico recently broke ground on
a replacement for the deteriorating San Antonio de los
Buenos wastewater treatment plant in Punta Bandera,
which is expected to dramatically reduce sewage
discharge affecting San Diego and Tijuana shorelines. The new $33-million facility will feature advanced oxidation ditch technology and aims to be operational by the end
of September 2024, marking a significant step towards
resolving cross-border pollution issues.
Overview of Pollution Challenges
The Tijuana River Watershed, which spans the U.S.-
Mexico border, has become a critical focal point for
environmental and public health concerns due to
recurring sewage pollution. Over the last three decades, rapid population growth, industrialization, and urban
sprawl in Tijuana, Mexico, have severely taxed the aging sewage infrastructure. This strain has led to frequent
untreated sewage overflows, which travel north into
California, significantly degrading water quality in the Tijuana River Estuary and adjacent coastal areas. This
pollution not only impacts the ecological health of these environments, but also poses serious public health risks to communities on both sides of the border.
Impact on Local Water Quality and
Beach Report Card Grades
The persistent sewage issues directly influence the
water quality of beaches in Southern San Diego County
and the Tijuana region, contributing to the region's
prominence on Heal the Bay's 2023 Beach Bummer
List. In particular, the proximity of these beaches to
the Tijuana River's outflow means they are often first
to experience the deleterious effects of these pollution events, resulting in beach closures and health advisories due to elevated bacterial levels. This year, the inclusion of these beaches on the Bummer List highlights a
concerning trend of deteriorating conditions, which,
while present, has not been as pronounced in previous
years. Increased awareness and action are critical at this juncture to reverse the decline and safeguard these vital recreational and ecological assets.
42 HEAL THE BAY // 2023–2024
III BEACH NEWS
Ongoing Challenges and Future Plans
Despite these planned advancements, challenges remain,
particularly with frequent sanitary sewer overflows during rain events and the need for urgent rehabilitation of
infrastructure that has been long neglected. The San
Diego Water Board, CA Coastal Commission, elected
officials, non-profits, and other interested parties continue to press for timely completion of these projects to ensure compliance with the Clean Water Act and to safeguard
public health.
The future of the Tijuana River Watershed's environmental health hinges on the successful implementation of these infrastructure projects and the continued cooperation
between the U.S. and Mexico. Ensuring these efforts
are adequately funded and prioritized remains a critical concern for all parties involved.
Recommendations for Further Action
Heal the Bay recommends continued vigilance and
advocacy to ensure these projects not only proceed
on schedule but also include necessary improvements
to handle future challenges. Public education and
community engagement are crucial in fostering a broader understanding of the issues and in mobilizing support for sustained environmental protection efforts. Additionally, ongoing monitoring and adaptive management
strategies will be vital in responding effectively to
the dynamic nature of transboundary pollution and in
safeguarding the coastal waters that are integral to the region's ecological and economic well-being.
Through the Beach Report Card, Heal the Bay will
continue to highlight these issues, providing critical
information to the public and policymakers to drive and inform actions that improve water quality and protect
public health along California's southern coast.
MORE NEWS
Efforts to Weaken Water Quality
Objectives
Heal the Bay has been at the forefront of ensuring water quality protections for visitors to West Coast beaches
since our founding. Our goals and motivations have
always been to protect the public and the environment
from the harmful impacts of sewage pollution. Heal the
Bay supported mandated beach monitoring through
AB 411 (Wayne, 1997); we have advocated for millions of dollars in investments for water quality improvements;
our Beach Report Card has spurred local action to
improve water quality; and most recently, we prompted
the state to define freshwater recreation sites and
develop guidance on monitoring them for fecal pollution through our sponsorship of AB 1066 (Bloom, 2021).
Unfortunately, we have seen a number of attempts to
loosen or rollback fecal pollution regulations in California.
When waterways become polluted with contaminants
such as FIB, the USEPA holds responsible those who
discharge pollution, which can include local municipalities, wastewater treatment plants, and other pollution
producing facilities. These dischargers are legally
responsible for reducing the amount of contamination in their discharge so that the local waterways once again
meet their water quality standards. Under the Clean
Water Act of 1972, some polluted water bodies have limits on the amount of pollution that can be discharged into
them. These limits are called Total Maximum Daily Loads (TMDLs), and they are defined as the maximum amount of
pollution that a waterbody can handle before people get sick, aquatic life is harmed, or other beneficial uses are impacted. A local government is usually given at least 10 years, though often as much as 20 to 30 years, to achieve compliance with a TMDL. However, some responsible
parties have attempted to weaken these limits, or
extend the deadlines to meet them, which would make
compliance with the Clean Water Act easier. In 2021, the SWRCB approved extensions of up to 6.5 years for nine
TMDL deadlines in the Los Angeles Region, including four 43 HEAL THE BAY // 2023–2024
III BEACH NEWS
related to bacteria pollution, allowing for the continued discharge of pollutants to drain through our communities and out to the Pacific Ocean.8 Since then, we have
seen additional deadline extension requests submitted.
In addition, dischargers are increasingly focused on
fecal pollution originating solely from humans, which
inappropriately disregards fecal pollution from indirect human activities such as pets, livestock, and certain
flocks of birds, which contribute fecal contamination to our watersheds as a result of human activity. Human fecal waste does pose the largest health risk to humans, but
research has shown that fecal matter from other animals is also hazardous to human health.
9 Heal the Bay is watching these attempts to alter TMDLs very closely, and advocating that any changes that are
made must be based on the best available science, and
must still be fully protective of public and environmental health. We urge the SWRCB to firmly reassert that
local governments and other pollution dischargers are
responsible for keeping all fecal matter originating from human activities out of the ocean and waterways. Some
recent efforts to weaken water quality restrictions include:
• In September 2022, The SWRCB hosted the
California Bacteria Summit, which was co-hosted
by the California Stormwater Quality Association
(CASQA).10 CASQA is effectively a lobbying alliance
that represents the interests of the municipalities
responsible for keeping pollution out of the water. The event was comprehensive, but a significant amount
of time was spent discussing strategies that would
allow municipalities and pollution dischargers to get
off the hook for fecal pollution. Heal the Bay and other groups boycotted the Bacteria Summit because the
organizers failed to include many crucial stakeholders
in their discussion such as Indigenous and
environmental justice organizations. The SWRCB did
acknowledge this shortcoming and began a process
of planning a second summit that included Indigenous,
environmental justice, and nonprofit organizations.
8 https://www .waterboards.ca.gov/losangeles/water_issues/programs/tmdl/docs/R21- 001_RB_RSL.PDF.pdf
9 https://www .sciencedirect.com/science/article/abs/pii/S2352352220300451 10 https://www .waterboards.ca.gov/bacterialobjectives/#bsummit However , the 2024 Bacteria Summit, initially scheduled for August 27–28, has been canceled. The SWRCB
and the Planning Committee, appreciating the
community’s interest and efforts, decided to shift focus from a large-scale summit to smaller, more impactful
discussions. The intention is to foster focused
dialogues in smaller settings, continuing these critical conversations across various platforms. A new working
group, including representatives from California Native American Tribes, non-governmental organizations, the
regulated stormwater and wastewater communities,
and the SWRCB, will meet quarterly to exchange
updates, perspectives, and new information on
managing FIB and ensuring safe water contact.
• San Diego County has numerous TMDLs in place
for its beaches, and recently requested a number
of changes to the requirements including deadline
extensions and a focus on human sources. We
commend staff at the San Diego Regional Water
Quality Control Board for removing the alternative
compliance pathway focused on human sources.
Unfortunately, in March of 2024, the local government
agencies responsible for these TMDLs did receive an
extension for the compliance deadline at 20 beaches.
San Diego County municipalities have actually made
a lot of progress towards reaching the TMDLs set for
their beaches so we are disappointed that they took
this approach, and that the Regional Water Board is
allowing exceedances to occur up to 90% of the time
for the next several years.
Incorporating ddPCR Technology in
San Diego
Since May 2022, San Diego has implemented ddPCR
technology to test bacterial levels in water. Amid efforts to protect public health and the environment from
fecal pollution, Heal the Bay supports the integration of innovative technologies like ddPCR. This method enhances the accuracy of detecting bacterial contamination and
significantly reduces the time from sample to result,
allowing for more timely public notifications.
44 HEAL THE BAY // 2023–2024
III BEACH NEWS
However, as we work to incorporate ddPCR results
into the Beach Report Card grading system, we have
observed some inconsistencies compared to traditional
culturing methods. Currently, ddPCR in San Diego
focuses solely on Enterococcus, without testing for total and fecal coliforms, which limits the comprehensiveness of our water quality assessments. Despite these
challenges, Heal the Bay is committed to refining these methods to ensure they align with our rigorous standards for accuracy and reliability in water quality testing.
This technological transition is crucial as we continue to address the significant water quality issues faced in the region, especially those stemming from persistent
pollution in the Tijuana watershed. The situation
underscores the critical need for improved infrastructure and international cooperation to mitigate pollution
impacts. By advancing our monitoring techniques, we
aim to enhance public health protections and support the restoration of our coastal ecosystems.
Keeping Our Ocean Safe and Clean
The good news about water quality at our beaches is
that we know how to reduce the most common inputs of
fecal pollution. A watershed-wide nature-based approach, in addition to sewage infrastructure upgrades, is our
best bet for keeping our waters clean and safe. Green
infrastructure spaced throughout our communities will
provide clean water, green space for communities to
enjoy, habitat for wildlife, and so much more. The Los
Angeles County Safe, Clean Water Program (SCWP),
approved by local voters in 2018, offers a model program for improving coastal and inland water quality using a
multi-benefit approach.11 This funding program aims to
increase local water supplies, improve water quality, and protect public health by focusing efforts on multi-benefit projects, particularly in communities that have been
identified as disadvantaged and severely disadvantaged
with regards to access to green space and other
socioeconomic factors. This year, the SCWP underwent
its first official assessment through the Biennial Review 11 https://safecleanwaterla. org/
process, offering an opportunity to assess progress, reflect on the achievement of goals, and make recommendations
to improve the Program. Heal the Bay celebrates the
successes of the SCWP in its first four years, including the approval of funding for 126 regional infrastructure projects, representing over $1.4 billion in stormwater
investments. We also recognize that more must be done
through proactive visioning to maximize the potential
benefits of the SCWP based on data and community
needs assessments. There is also a need to improve
access to participation in the program, and to examine
ways to accelerate hardscape removal, green schools, and generally increase implementation of vegetated nature-
based solutions throughout the Program. This year, as
a result of funding constraints, the County is accepting applications, as usual, for Scientific Studies and the
Technical Resources Program, but not for the Infrastructure Program. Some upcoming engagement opportunities for
Program improvement during this funding pause include
watershed planning efforts, and the launch of a new
education grants program within the SCWP.
NowCast Update
For the tenth summer, Heal the Bay is providing daily
water quality predictions for California beaches at the Beach Report Card with NowCast website and application.
NowCast predicts concentrations of bacteria in the water on a daily basis, thus providing additional information to the public and filling in the time gaps of traditional bacteria sampling. To make daily predictions, we use computer
models to examine correlations between environmental
conditions (such as temperature and tide) and historical bacteria concentrations. Our NowCast models then predict, with a high accuracy, how much bacteria is present in the water given the current local conditions; and predictions are verified with sampling data. This year, we do not have as many beaches in NowCast as we have had in previous
years. This is due to the decline in accuracy with our
current linear models, which struggle to keep up with the increasing weather anomalies, changing environmental
conditions, and unusual bacterial data patterns we've
seen in recent years. Consequently, we were not able to 45 HEAL THE BAY // 2023–2024
III BEACH NEWS
provide NowCast predictions for this past winter. Heal the Bay is in the process of reconstructing our environmental and bacteria database and we plan to develop new and
improved prediction models this year. We hope to secure the necessary funding to enhance our model's accuracy
and provide more precise predictions for more beaches in the future. Visit beachreportcard.org12 to find daily summer predictions for 14 beaches in California.
The Beach Report Card and Access to
Recreation
Recreation, whether at a park or a beach, plays a crucial role in enhancing quality of life and public health. While our Beach Report Card and River Report Card programs serve
as essential tools to ensure safety for water recreators, we recognize that they have been limited in reach. Initially, our report cards benefitted those who have access to
recreational areas and are comfortable engaging in water activities. However, working-class communities, particularly those composed predominantly of Black, Indigenous,
Latinx, Asian, and other people of color, face numerous barriers to accessing recreational spaces. These obstacles range from work commitments and geographic constraints
to unfamiliarity with various recreational activities. We affirm that access to recreational opportunities is a fundamental right for everyone, irrespective of their identity, and are committed to diminishing these barriers.
Addressing recreation justice has become a pivotal aspect of our mission. Heal the Bay is actively broadening the scope of our Beach and River Report Cards by collaborating with organizations dedicated to dismantling the barriers to water recreation faced by communities of color.12 https://beachreportcard. org/ In recent developments, we are excited about the launch of our Marine Debris Summer Y outh Internship and
Volunteer Program, which is dedicated to expanding access to the Santa Monica Bay through community science
initiatives utilizing a National Oceanic and Atmospheric Administration protocol. Club Heal the Bay members from inland schools, such as John Marshall High School in Los Feliz, now frequently participate in environmental DNA
(eDNA) sampling events. These events support research
into the effectiveness of Marine Protected Areas (MPAs) by comparing marine biodiversity and abundance within
and outside of MPAs. Students engage as community
scientists, employing eDNA monitoring as a dynamic
method to analyze environmental samples and enhance our understanding of local biodiversity.
Moreover, our Speakers Bureau program has made
significant strides in educating the community through
compelling presentations that leverage the Beach
Report Card to advocate for coastal access and address
ocean pollution. In 2024 alone, we've conducted 122
presentations at schools and organizations, particularly focusing on inland communities.
For the last decade, Heal the Bay began teaming up with organizations such as The Black Surfers Collective
13 Surf
Bus Foundation,14 Santa Monica Conservancy,15 and Swim
Up Hill16 to celebrate Nick Gabaldón — a trailblazing surfer of African American and Mexican American descent, and
the first documented surfer of color in Santa Monica Bay.
Nick Gabaldón Day introduces people young and old from
inland communities to the magic of the coast through free surf and ocean safety lessons, beach ecology exploration, and a history lesson about a man who followed his passion, and a community who challenged anti-Black discrimination to enjoy the beach. Heal the Bay will continue to celebrate Nick Gabaldón Day and enhance access to beach
recreation, and we remain committed to further expanding these initiatives to foster greater inclusivity and engagement with our natural water environments.
13 http://www .blacksurferscollective.org/
14 https://www .surfbusfoundation.org/
15 https://www .smconservancy.org/
16 https://www .swimuphill.org/
46 HEAL THE BAY // 2023–2024
IV APPENDICES
appendices
2023-2024
A // BEACH BUMMER HISTORY ........................................................ 47
B // ALL GRADES B
Y COUNTY
..........................................................49
C // FREQUENTL Y ASKED QUESTIONS
..........................................64
D // METHODOLOGY
...........................................................................66
E // ACKNOWLEDGEMENTS
..............................................................68 Emerald Bay, Catalina Island / Los Angeles County
47 HEAL THE BAY // 2023–2024
2013–2014 2014–2015 2015–2016 2016–2017 2017–2018
Cowell Beach, west of the wharf
SANTA CRUZ COUNTY
Cowell Beach, west of the wharf
SANTA CRUZ COUNTY
Cowell Beach, west of the wharf
SANTA CRUZ COUNTY
Clam Beach, at Strawberry Creek
HUMBOLDT COUNTY
Poche Beach, at creek outlet
ORANGE COUNTY
Marina Lagoon,
Aquatic Park & Lakeshore Park
SAN MATEO COUNTY
Marina del Rey, Mother’s Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
Clam Beach, at Strawberry Creek
HUMBOLDT COUNTY
San Clemente Pier
ORANGE COUNTY
Lakeshore Park, behind Rec
Center
SAN MATEO COUNTY
Marina del Rey Mother’s Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
Clam Beach, at Strawberry Creek
HUMBOLDT COUNTY
San Diego Bay Shelter Island,
Shoreline Beach Park
SAN DIEGO COUNTY
Cowell Beach, west of the wharf
SANTA CRUZ COUNTY
Linda Mar Beach, at San Pedro
Creek
SAN MATEO COUNTY
Cabrillo Beach Harborside l
LOS ANGELES COUNTY
Aquatic Park
SAN MATEO COUNTY
Monarch Beach, at Salt Creek
ORANGE COUNTY
Newport Bay Abalone Avenue
Beach
ORANGE COUNTY
Clam Beach, at Strawberry Creek
HUMBOLDT COUNTY
Stillwater Cove
MONTEREY COUNTY
Mission Bay, Visitor’s Center at
Clairemont Dr.
SAN DIEGO COUNTY
Santa Monica Pier
LOS ANGELES COUNTY
Lakeshore Park, behind Rec
Center
SAN MATEO COUNTY
Roosevelt Beach, south end of
parking lot
SAN MATEO COUNTY
Clam Beach, at Strawberry Creek
HUMBOLDT COUNTY
Santa Monica Pier
LOS ANGELES COUNTY
Marina del Rey Mother’s Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
La Jolla Cove
SAN DIEGO COUNTY
Luffenholtz Beach, near Luffen-
holtz Creek
HUMBOLDT COUNTY
Santa Monica Pier
LOS ANGELES COUNTY
Candlestick Point, Sunnydale
Cove
SAN FRANCISCO COUNTY
Redondo Municipal Pier, 100
yards south
LOS ANGELES COUNTY
Santa Monica Pier
LOS ANGELES COUNTY
Santa Monica Pier
LOS ANGELES COUNTY
Pillar Point Harbor, at Westpoint
Ave.
LOS ANGELES COUNTY
Stillwater Cove, at Beach and
Tennis Club
MONTEREY COUNTY
Candlestick Point Sunnydale
Cove
SAN FRANCISCO COUNTY
Capitola Beach, west of jetty
SANTA CRUZ COUNTY
Cowell Beach, west of the wharf
SANTA CRUZ COUNTY
Capitola Beach, west of jetty l
SANTA CRUZ COUNTY
Cabrillo Beach Harborside
LOS ANGELES COUNTY
Pillar Point Harbor, end of
Westpoint Ave.
SAN MATEO COUNTY
Luffenholtz Beach, near
Luffenholtz Creek
HUMBOLDT COUNTY
Cabrillo Beach Harborside
LOS ANGELES COUNTY
Windsurfer Circle
SAN FRANCISCO COUNTY
Huntington State Beach,
projection of Brookhurst Street
ORANGE COUNTY
Pismo Beach Pier, 40 feet south
of the pier
SAN LUIS OBISPO COUNTY
Marina del Rey Mother’s Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
Surfer’s Beach, southend of riprap
SAN MATEO COUNTY
Last 10 Years Beach Bummers: 2013–2023
IV APPENDIX / A BEACH BUMMER HISTORY
(CONTINUED)
48 HEAL THE BAY // 2023–2024
BEACH BUMMER HISTORYIV APPENDIX / A
2018–2019 2019–2020 2020–2021 2021–2022 2022–2023
San Clemente Pier
ORANGE COUNTY
Fitzgerald Marine Reserve, at San
Vicente Creek Outlet
SAN MATEO COUNTY
Tijuana Slough NWRS, Tijuana
River mouth
SAN DIEGO COUNTY
Playa Blanca
TIJUANA
Playa Blanca
TIJUANA
Clam Beach, at Strawberry Creek
HUMBOLDT COUNTY
Poche Beach, at Creek Outlet
ORANGE COUNTY
Erckenbrack Park, Foster City
SAN MATEO COUNTY
Erckenbrack Park, Foster City
SAN MATEO COUNTY
Santa Monica Pier
LOS ANGELES COUNTY
Linda Mar Beach, at San Pedro
Creek
SAN MATEO COUNTY
Pillar Point Harbor, at Capistrano
Ave.
SAN MATEO COUNTY
Capitola Beach, west of jetty.
SANTA CRUZ COUNTY
Marlin Park, Foster City
SAN MATEO COUNTY
Linda Mar Beach, at San Pedro
Creek
SAN MATEO COUNTY
Long Beach City Beach, projec-
tion of Coronado Ave.
LOS ANGELESCOUNTY
Erckenbrack Park, Foster City
SAN MATEO COUNTY
Gull Park, Foster City
SAN MATEO COUNTY
Santa Monica Pier
LOS ANGELES COUNTY
Marlin Park, Foster City
SAN MATEO COUNTY
Cowell Beach, west of the wharf
SANTA CRUZ COUNTY
Topanga Beach, at Creek Outlet
LOS ANGELES COUNTY
Marina del Rey Mother's Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
Marina del Rey Mother's Beach, at
Lifeguard T ower
LOS ANGELES COUNTY
Erckenbrack Park, Foster City
SAN MATEO COUNTY
Monarch Beach, at Salt Creek
ORANGE COUNTY
Pillar Point Harbor Beach
SAN MATEO COUNTY
Tijuana Slough NWRS, 3/4 miles
north of Tijuana River
SAN DIEGO COUNTY
Moonstone County Park (Little
River State Beach)
HUMBOLDT COUNTY
Tijuana Slough, Tijuana River
mouth
SAN DIEGO COUNTY
Marina del Rey, Mother’s Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
Linda Mar, at San Pedro Creek
Outlet
SAN MATEO COUNTY
Clam Beach County Park, at
Strawberry Creek
HUMBOLDT COUNTY
Newport Bay, Vaughns Launch
ORANGE COUNTY
Pillar Point Harbor, Capistrano
Ave Beach
SAN MATEO COUNTY
Cabrillo Beach Harborside
LOS ANGELES COUNTY
Mission Bay, Vacation Isle North
Cove
SAN DIEGO COUNTY
Marlin Park, Foster City
SAN MATEO COUNTY
Lakeshore Park, behind Rec
Center
SAN MATEO COUNTY
Marina del Rey Mother's Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
Keller Beach South Beach
CONTRA COSTA COUNTY
San Clemente Pier
ORANGE COUNTY
Candlestick Point, Windsurfer
Circle
SAN FRANCISCO COUNTY
Marina del Rey Mother's Beach,
between Lifeguard T ower and
Boat dock
LOS ANGELES COUNTY
Poche Creek Outlet
ORANGE COUNTY
Aquatic Park
SAN MATEO COUNTY
Pillar Point Harbor, at Westpoint
Ave.
SAN MATEO COUNTY
East Beach, at Mission Creek
SANTA BARBARA COUNTY
Tijuana Slough, north of Tijuana
River
SAN DIEGO COUNTY
Gull Park, Foster City
SAN MATEO COUNTY
F----- 0
49 HEAL THE BAY // 2023–2024
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
ALAMEDA COUNTY
Crown Beach, at Bath House A+ A+
Crown Beach, at Windsurfer Corner A A+
Crown Beach, at Sunset Rd. A A+
Crown Beach, at 2001 Shoreline Dr. A A
Crown Beach, at Bird Sanctuary A B
Crown Beach, Crab Cove B C
CONTRA COSTA COUNTY
Keller Beach, North Beach A A
Keller Beach, South Beach A A
HUMBOLDT COUNTY
Trinidad State Beach, at Mill Creek C D
Luffenholtz Beach, at Luffenholtz Creek D B
Moonstone County Park (Little River State Beach) C A
Clam Beach County Park, at Strawberry Creek D B
Mad River Mouth (north) A+ A+
LOS ANGELES COUNTY
Long Beach City Beach, at 55th Place B C B
Long Beach City Beach, at 72nd Place B C A
Alamitos Bay, at shore float B F C
Long Beach Mothers' Beach, north end A F C
Colorado Lagoon, south B F C
Colorado Lagoon, north C F B
Alamitos Bay, at 56th Place on bayside A C C
Long Beach City Beach, at 5th Place B C C
Long Beach City Beach, at 10th Place B C F
Long Beach City Beach, at Molino Av. A C F
Long Beach City Beach, at Granada Av. B C C
Alamitos Bay, at 2nd St. Bridge and Bayshore A F D
Long Beach City Beach, at Coronado Ave. B C D
Belmont Pier, west side B C D
Long Beach City Beach, at Prospect Ave. C C C
Cabrillo Beach, harborside at boat launch B C D
Cabrillo Beach, harborside at restrooms F F F
Big Rock Beach at 19948 PCH stairs A+
Malibu Pier, 50 yards east of pier A A
Malibu Point A A+
Santa Monica Beach, at Strand St. A A
Venice City Beach, at Brooks Ave. drain A+ A
Venice Beach, 50 yards south of Fishing Pier A+ B
Venice Beach, at T opsail St. A B
Marina del Rey Mothers' Beach, at playground D F F
Marina del Rey Mothers' Beach, between Lifeguard T ower and Boat dock F F F Dockweiler State Beach, at World Way A A
Hyperion Treatment Plant, at One Mile Outfall A+ A
Dockweiler State Beach, at Grand Ave. A+ A
Hermosa City Beach, at 26th Street A A+
Redondo State Beach, at T opaz Street A+ A+
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
(CONTINUED)
50 HEAL THE BAY // 2023–2024
Avalon Beach, 100 feet east of the Green Pleasure Pier A+ A+ Avalon Beach, 50 feet east of the Green Pleasure Pier A+ A+ Avalon Beach, 50 feet west of the Green Pleasure Pier A+ A Avalon Beach, 100 feet west of the Green Pleasure Pier A+ A+ Avalon Beach, east of the Casino Arch at the steps A A+ Manhattan Beach, at 28th Street A B D
Herondo Street (Redondo Breakwater) A B B
Avalon Beach, underneath Pier A+
Avalon Beach, 50 yards north of Pier A+
Rancho Palos Verdes, Long Point A A B
Rancho Palos Verdes, Abalone Cove Shoreline Park A A A
Rancho Palos Verdes, Portuguese Bend Cove A+ A A+
Royal Palms State Beach A A A
Cabrillo Beach, ocean side A B A+
Palos Verdes Estates, at Palos Verdes Cove B A A
Palos Verdes Estates, at Malaga Cove rocks B D A
Surfrider Beach, at lagoon breach F F F
Ballona Creek Entrance A+
Dockweiler State Beach, at Culver Blvd. A C A+
Imperial Highway Storm Drain, 50 Y ards North A+
Manhattan State Beach, at 40th Street A B A
Hermosa Beach Pier, 50 yards south of pier A B B
Palos Verdes Estates, at Malaga Cove trail outlet A+ B A Topanga Beach, at creek mouth F D F
Marina del Rey Mothers' Beach, at lifeguard tower D F F Leo Carrillo Beach, at Arroyo Sequit Creek A A
Dan Blocker County Beach, at Solstice Canyon C B B
Puerco State Beach, at creek mouth A A+
Marie Canyon storm drain, at Puerco Beach F F F
Carbon Beach, at Sweetwater Canyon D C D
Las Flores State Beach, at Las Flores Creek B C C
Las Tunas County Beach, at Pena Creek A A C
Tuna Canyon A+
Encinal Canyon at El Matador State Beach A+
Broad Beach, at Trancas Creek A+ A+
Zuma Beach, at Zuma Creek B A+
Walnut Creek Outlet, at Wildlife Road A C B
Paradise Cove Pier, at Ramirez Canyon Creek D A
Escondido State Beach, at Escondido Creek C F D
Latigo Canyon Creek mouth A B
Castle Rock Beach, at storm drain A C A
Dockweiler State Beach, at North Weschester storm drain B A A Dockweiler State Beach, at Imperial Highway storm drain A A A Will Rogers State Beach, at Pulga Canyon storm drain A B B Will Rogers State Beach, Bel Air Bay Club A A A+
Will Rogers State Beach, at T emescal Canyon A A+
Will Rogers State Beach, at Santa Monica Canyon D F F
Santa Monica Beach, at Montana Ave. A+ A+
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
(CONTINUED)
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
51 HEAL THE BAY // 2023–2024
Santa Monica Beach, at Wilshire Blvd. A+ A
Santa Monica Pier F F F
Santa Monica Beach, at Pico-Kenter storm drain C F F
Ocean Park Beach, at Ashland Ave. storm drain A B C
Venice Beach, at Rose Ave. A C B
Venice Beach, at Windward Ave. B B D
Nicholas Beach, at San Nicholas Canyon Creek A+ A+
Manhattan Beach Pier A C D
Redondo Beach Pier, 100 yards south of pier A F B
Redondo State Beach, at Sapphire Street A A B
Torrance Beach, at Avenue I storm drain A B B
Dockweiler State Beach, at Ballona Creek mouth A+ A
MARIN COUNTY
Dillon Beach A A
Millerton Point A A
Drakes Beach A+
Drakes Estero A+
Bolinas Beach, at Wharf Rd. A A+
Stinson Beach, North A+ A
Stinson Beach, Central A+ A+
Stinson Beach, South A+ A+
Lawson's Landing A A+
Muir Beach, North A+ A+
Muir Beach, Central A+ A+
Muir Beach, South A A+
Rodeo Beach, North A+ A+
Rodeo Beach, Central A+ A+
Rodeo Beach, South A+ A+
Baker Beach, Horseshoe Cove SW A+ A+
Baker Beach, Horseshoe Cove NW A A+
Baker Beach, Horseshoe Cove NE A A+
Schoonmaker Beach A A+
Miller Park A A
Paradise Cove A+ A+
China Camp A A+
McNears Beach B B
Heart's Desire A+ A+
Shell Beach A+ A+
Chicken Ranch Beach at Channel. F
Chicken Ranch Beach, at Creek mouth A A
MENDOCINO COUNTY
Pudding Creek Outlet A+ A+
Hare Creek A+ A+
Caspar Beach, at Caspar Creek A A+
Big River at PCH A+ A+
Van Damme State Park, at Little River A+ A+
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
52 HEAL THE BAY // 2023–2024
MONTEREY COUNTY
Monterey State Beach A+
Monterey Municipal Beach at the Commercial Wharf A
San Carlos Beach, at San Carlos Beach Park A A+
Lover's Point Park, at 16th Street A A+
Asilomar State Beach, at Arena Av. A+ B
Spanish Bay (Moss Beach), at 17 mile drive A+ A+
Stillwater Cove, at Beach and T ennis Club A A+
Carmel City Beach, at Ocean Ave. A A+
ORANGE COUNTY
Dana Point Harbor Fuel Dock A+ A+ A+
Dana Point Harbor Pier A A
Dana Point Harbor Baby Beach, West End B C C
Dana Point Harbor Baby Beach, Buoy Line B C B
Dana Point Harbor Baby Beach, Swim Area B B C
Dana Point Harbor Baby Beach, East End B B
Dana Point Harbor, Pilgrim Dock A A C
Dana Point Harbor Y outh Dock A A+ A
Huntington Harbor, 11th Street Beach B A B
Huntington Harbour, Anaheim Bay-Gas Dock A A+ A+
Huntington Harbor, Humboldt Beach A A+ A+
Huntington Harbor, Seagate Lagoon A+ A+ A+
Huntington Harbour, Admiralty Drive Beach A A+ A
Huntington Harbor, Trinidad Lane Beach A+ A+ A+
Huntington Harbour, Channel Beach C A+
Huntington Harbor, Mothers Beach-Orange County A B A
Huntington Harbor, Coral Cay Beach A A+ A+
Newport Bay, Park Avenue Beach B A+ A
Newport Bay, Onyx Avenue Beach A A
Newport Bay, Ruby Avenue Beach A A+ A+
Newport Bay, Bayshore Beach A A+ B
Newport Bay, Via Genoa Beach A A A
Newport Bay, 43rd Street Beach A A B
Newport Bay, 38th Street Beach A A+ A
Newport Bay, 33rd Street Beach A A+ B
Newport Bay, Rhine Channel Beach B A B
Newport Bay, 19th Street Beach A A A+
Newport Bay, 15th Street Beach A A A+
Newport Bay, 10th Street Beach A A A+
Newport Bay, Alvarado/ Bay Isle Beach A A+ A+
Newport Bay, Sapphire Avenue Beach A A A+
Newport Bay, Abalone Avenue Beach B C B
Newport Bay, N Street Beach A A+ A
Newport Bay, Newport Dunes-East A A A+
Newport Bay, Newport Dunes-Middle A A A+
Newport Bay, Newport Dunes-North B C C
Newport Bay, Newport Dunes-West A+ A A+
Newport Bay, North Star Beach A A+ A+
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
(CONTINUED)
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
53 HEAL THE BAY // 2023–2024
Newport Bay, Promontory Point A+ A+ A+
Newport Bay, De Anza Beach A A+ A+
Newport Bay, Garnet Avenue Beach A A A+
Newport Bay, Lido Y acht Club Beach A+ A+ A
Newport Bay, Harbor Patrol Beach at Bayside Drive B B
Newport Bay, Grand Canal A A A+
Newport Bay, Newport Blvd Bridge A A A
Newport Slough at Lancaster/62nd Street Beach C B C
Newport Slough, Grand Street Beach A A B
Dana Point Harbor, Harbor Patrol Dock A A A+
Dana Point Harbor Guest Dock A A+ A+
Dana Point Harbor, M Dock (East Basin) B A+
Huntington Harbour, Clubhouse Marina A A+ B
Huntington Harbour, Sunset Aquatic Park Beach A A
Huntington Harbor, Davenport Beach A A+
Huntington Harbour, Anderson Street Marina A C
Dana Point, at Camino Estrella A+ A+
Dana Point, South Capistrano Bay Community Beach A+ A+ A+ Poche Beach A A
Diver's Cove A A A+
Pico drain at North Beach A A+
Mariposa Beach A+ A+
Linda Lane Beach A A+ A
San Clemente Pier A+ A+
Riviera Beach A+ A+ A+
Between Pearl & Agate Street A+
Cleo Street A+ B A+
Aliso Creek Ocean Interface A B D
West Street A+ A A
San Juan Creek D F F
Doheny Beach A B A+
Capistano Bay Community Beach A+
Poche Creek Outlet F B D
Little Corona Beach C B B
Monarch Beach at north C C B
Doheny State Beach, North Beach B D B
Doheny State Beach, End of the Park A B A+
San Clemente Trafalgar Canyon A+ A+
Pelican Point Beach A+ A C
Muddy Creek Beach A A C
El Moro Beach A A A+
Emerald Bay Beach A+ A+ A+
Laguna Main Beach A B
Laguna Hotel A+ A A
Projection of Bluebird Canyon B A
Victoria Beach A+ A A+
Doheny State Beach, at San Juan Creek B D C
Doheny State Beach, at Last Campground A C A
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
(CONTINUED)
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
54 HEAL THE BAY // 2023–2024
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
Laguna Beach, at Goff Island Beach A+ A A+
Corona Del Mar (CSDOC) A+ A B
2000 feet south of SERRA Outfall A B A+
Crystal Cove (CSDOC) A+ A A
Marine Science Institute Beach (SERRA) A+ A+ A+
Dana Point, Capistrano County Beach A+ A+
Doheny State Beach, Pedestrian Bridge A A+
Doheny State Beach, Mid Beach north of San Juan Creek B C D Dana Strands Beach (AWMA) A A+
Huntington State Beach, at Brookhurst Street A A A
Huntington State Beach, at Magnolia Street A A A
Huntington State Beach, at Newland St. (SCE Plant) A A A Huntington City Beach, at Beach Blvd. A B A+
Huntington City Beach, at Huntington St. A A A+
Huntington City Beach, at 17th Street A+ A A+
Huntington City Beach, at Bluffs A A A
Bolsa Chica Reserve, at south end of beach A+ A A+
Bolsa Chica Reserve, at Flood Gates A A A+
Crescent Bay Beach A+ A A
Santa Ana River Mouth A A B
Newport Beach, at Orange Street A+ A C
Newport Beach, at 52nd/53rd Street A+ A B
Newport Beach, at 38th Street A+ A B
Balboa Beach, at 15th/16th Street A A A
Balboa Beach Pier A A A
Balboa Beach, The Wedge A A A
Crystal Cove A A A
Surfside Beach, at Sea Way A A A+
Seal Beach, at 1st Street B A+
Seal Beach, at 8th Street A B A
Seal Beach, at 14th Street A+ A A
Seal Beach Pier, 100 yards south of pier A A A
San Clemente, North beach at Avenida Pico A+ A+
San Clemente at El Portal drain A+ A+
San Clemente, South Linda Lane storm drain A+ A+
San Clemente Pier, Lifeguard Building north A A+
San Clemente, at Avenida Calafia A+ A+
San Clemente at Avenida Las Palmeras A+
Salt Creek Beach A+ A+ A+
Three Arch Bay A A A
1000 Steps Beach, at 9th St. A A A+
Laguna Lido A+ A A+
Table Rock A+ A A+
Camel Point A+ B A
Aliso Creek, 1000 south of creek mouth A B C
Aliso Creek, at mouth A B A+
North Aliso County Beach A A A+
Treasure Island Beach A A A+
Monarch Beach, 150 feet north of Salt Creek mouth A A A+ Sunset Beach, at Broadway A A A+
55 HEAL THE BAY // 2023–2024
SAN DIEGO COUNTY
Coronado, at North Beach near Ocean Blvd. A+
San Diego Bay, Tidelands Park at Mullinix Dr. C F
San Diego Bay, Glorietta Bay Park at boat launch F
San Diego Bay, Silver Strand A+
San Diego Bay, Bayside Park at projection of J Street F San Diego Bay, Spanish Landing Park beach F
San Diego Bay, Shelter Island (Shoreline Beach Park) A+ A Pacific Beach, at Grand Ave. A+ A+
Pacific Beach at Missouri St. A+
La Jolla, at Palomar Av. A+ A+
Windansea Beach, at Playa Del Norte A+ A+
La Jolla, at Vista De La Playa A A+
La Jolla Ravina, south of Nicholson Pt. A+ A+
La Jolla, South Casa Beach A+ A+
La Jolla, Children's Pool A+
La Jolla, projection of Vallecitos A+ A
La Jolla Shores Beach, Del Oro A A+
La Jolla Shores, El Paseo Grande (near Scripps) A+ A+
Del Mar, San Dieguito River Beach A+ A+
Encinitas, San Elijo State Park, Pipes surf break A A A+ Encinitas, Swami's Beach (Seacliff Park) A+
Encinitas, Moonlight Beach, Cottonwood Creek A+ A+ A+
Cesar Chavez Park F F
Harbor Island South F
Seaport Village F F
Ruocco Park F F
San Diego Bay, Outfall at B St Pier, Upstream F
San Diego Bay, Outfall at B St Pier, Downstream A+ F
Highland Ave Bridge F
Living Coast Discovery Center F
Sweetwater Channel Mouth F
Pacific Beach at Diamond A+
Pacific Beach at Law Street A+
Pacific Beach at Hornblend A+
Pacific Beach at Loring A+
Carlsbad, at Poinsettia Lane A+ A A+
Carlsbad, at Ponto Drive A+ A A+
Carlsbad, at Encina Creek A+ A A+
Carlsbad, at Palomar Airport Rd. A+ A A+
Carlsbad, at Cerezo Drive A+ A A+
Ocean Beach, San Diego River outlet (Dog Beach) A C
Pacific Beach, Crystal Pier at Garnet A+
Pacific Beach, T ourmaline Surf Park at T ourmaline St. A A+ La Jolla, Windansea Beach at Bonair St. A+ A+
La Jolla Shores, at Ave De La Playa A A+
Torrey Pines, Los Penasquitos Lagoon outlet A+ A+
Border Field State Park, north side of Border Fence F F F
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
(CONTINUED)
56 HEAL THE BAY // 2023–2024
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
Border Field State Park, at Monument Rd. F F F
Tijuana Slough NWRS, Tijuana River mouth F F F
Tijuana Slough NWRS, 3/4 miles north of Tijuana River F F F Imperial Beach, at Seacoast Dr. F F F
Imperial Beach, at Carnation Ave. F D F
Coronado, Silver Strand A C A
Coronado, at Ave del Sol A A A+
Oceanside, St. Malo Beach downcoast from St. Malo Road A A A+ Oceanside, at Cassidy Street A A D
Oceanside, Buccaneer Beach (at Loma Alta Crk.) F
Oceanside, 500 feet North of Loma Alta Creek A A F
Oceanside, at Forster Street A A A
Oceanside, at Tyson Street A A A+
Oceanside, San Luis Rey River outlet A+ A
Point Loma, Lighthouse A+ A+ A+
Point Loma, Point Loma Treatment Plant A A+ A+
Sunset Cliffs, at Ladera Street A A+ A
Ocean Beach, Ocean Pier at Narragansett Ave. A A A
Ocean Beach Pier, northside at Newport Ave. A+ B B
Ocean Beach, Stub Jetty A B C
Mission Beach, Belmont Park A+ A A+
Solana Beach, Fletcher Cove (proj. Lomas Santa Fe Dr.) A A+ Solana Beach, Tide Beach Park (proj. Solana Vista Dr.) A A+ A+ Cardiff State Beach, Seaside State Park A A A+
Cardiff State Beach, Las Olas (100 yds. south of Charthouse ) A A A+ Cardiff State Beach Charthouse parking (slight S. of Kilkeny) A A A+ Encinitas, San Elijo State Park (proj. Liverpool Dr.) B A+ A+
SAN MATEO COUNTY
Pillar Point #9 Harbor Beach F F C
Surfer's Beach, south end of riprap A+ B B
Gull Park Foster City D F D
Roosevelt Beach, south end of parking lot A B C
Dunes Beach A B B
Venice Beach at Frenchman's Creek B A+
Francis Beach at the foot of the steps A+ A A+
San Gregorio State Beach at San Gregorio Creek A A A
Pomponio State Beach at Pomponio Creek A A A+
Pescadero State Beach at Pescadero Creek A A A+
Bean Hollow State Beach A A A+
Sharp Park Beach, projection of Birch Ln. A+ A A+
Gazos Beach at Gazos Creek A A A
Oyster Point D B
Coyote Point A+ A B
Aquatic Park F F D
Lakeshore Park, behind Rec Center F F F
Kiteboard Beach C A
Foster City, Erckenbrack Park D F F
Foster City, Marlin Park F F D
(CONTINUED)
57 HEAL THE BAY // 2023–2024
Rockaway Beach, at Calera Creek A+ A A+
Linda Mar Beach, at Crespi Dr. D D
Linda Mar Beach, at San Pedro Creek F F F
Fitzgerald Marine Reserve, at San Vicente Creek C F
Pillar Point #8 Mavericks Beach Westpoint Ave. A C A+
Pillar Point Harbor, end of Westpoint Ave. B F D
Pillar Point Harbor, Capistrano Ave Beach D F D
SANTA BARBARA COUNTY
Guadalupe Dunes A+
Hope Ranch Beach A B B
Arroyo Burro Beach B C C
Leadbetter Beach A A
East Beach, at Mission Creek B C F
East Beach, at Sycamore Creek A A A
Butterfly Beach A A+
Hammond’s Beach A B B
Summerland Beach A B A
Carpinteria State Beach B A B
Jalama Beach A A
Gaviota State Beach B B
Refugio State Beach B C
El Capitan State Beach A+ A+
Sands, at Coal Oil Point A+ B
Goleta Beach A+ D C
SANTA CRUZ COUNTY
Cowell Beach, west of the wharf A C D
Santa Cruz Main Beach, at the Boardwalk B B
Santa Cruz Main Beach, at the San Lorenzo River D B
Seabright Beach A C B
Twin Lakes Beach A A+
Capitola Beach, west of jetty B B
Capitola Beach, east of jetty A A
New Brighton Beach A A+
Seacliff State Beach A A+
Rio Del Mar Beach A A
Hidden Beach A+
Natural Bridges State Beach A C B
Mitchell's Cove Beach A C D
Lighthouse Beach (Steamer Lane) A+
Cowell Beach, at the Stairs A B
Cowell Beach Lifeguard T ower 1 A C
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
58 HEAL THE BAY // 2023–2024
SAN FRANCISCO COUNTY
Ocean Beach, at Pacheco St. F A+
Ocean Beach at Vicente St. F A
Hyde Street Pier A A A+
Aquatic Park Beach, 211 Station A+ A A+
China Beach, at Sea Cliff Ave. A+ A A+
Ocean Beach, at Balboa Ave. A+ B B
Ocean Beach, at Lincoln Way A+ B A
Ocean Beach, at Sloat Blvd. A A A+
Fort Funston, opposite Lake Merced overflow structure D Candlestick Point, Jackrabbit Beach A C A
Candlestick Point, Windsurfer Circle A C A
Candlestick Point, Sunnydale Cove A F B
Islais Landing at Islais Creek B F F
Mission Creek Park, at Mission Creek A F F
Crissy Field Beach East, 202.4 Station A C A
Crissy Field Beach West, 202.5 station A+ B A
Baker Beach East, Ocean #15 East A A A+
Baker Beach, Lobos Creek C D C
Baker Beach West, Ocean #16 A+ A A
SAN LUIS OBISPO COUNTY
Avila Beach 350 yards west of pier, at Creek A
Avila Beach, at San Luis Street A
Studio Drive parking lot near Old Creek A+
Cayucos State Beach, downcoast of the pier A+
Cayucos Beach, North of pier at storm drain A+
Hearst Memorial State Beach, 100 yards west of the pier at creek outfall A Olde Port Beach (Harford Beach), North A+
Pismo Beach, at Ocean View B
Pismo Beach, 40 feet south of the pier A+
Pismo Beach, at Wadsworth Street A+
San Simeon State Beach, at Pico Ave. A+
Sewers at Silver Shoals Dr. A
Morro Bay City Beach, 75 feet north of main parking lot A Morro Bay City Beach, at Morro Creek A+
Morro Bay City Beach, at Atascadero A+
Morro Strand State Beach, at Beachcomber Drive B
Pismo State Beach, 571 yards south of Pier Ave. C
Pismo State Beach, at Pier Ave. A
Pismo State Beach, 330 yards north of Pier Ave. A+
SONOMA COUNTY
Gualala Regional Park Beach A+ A+
Black Point Beach A+ A+
Stillwater Cove Regional Park Beach A+ A+
Goat Rock State Park Beach A+ A+
Salmon Creek State Park Beach A+ A+
Campbell Cove State Park Beach A F
Doran Regional Park Beach A A+
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
59 HEAL THE BAY // 2023–2024
VENTURA COUNTY
Rincon Beach, 25 yards south of the creek mouth F C
Solimar Beach, south at end of gate access road A A A
Rincon Beach, at the end of the footpath A
Emma Wood State Beach, 50 yards South of first drain A A+ Surfer’s Point at Seaside A B A
Promenade Park, at Figueroa St. A B B
Promenade Park, at Redwood Apts. A A+
Promenade Park, south of drain at California St. A+ A+
San Buenaventura Beach, south of drain at Kalorama St. A+ San Buenaventura Beach, south of drain at San Jon Rd. B C D San Buenaventura Beach, south of drain at Dover Ln. A A+ San Buenaventura Beach, south of drain at Weymouth Ln. A+ A+ Marina Park, north end of playground A+ A+
Peninsula Beach, North of South Jetty A D
La Conchita Beach, point zero, Ocean View Rd. A+
Surfer’s Knoll, at parking lot B B A
Oxnard Beach - 5th Street (south of drain) A
Oxnard Beach, at Outrigger Way A+ B
Oxnard Beach Park, at Falkirk Ave. A+
Oxnard Beach Park, at Starfish Dr. A+
Hollywood Beach, at La Crescenta St. A+
Hollywood Beach, at Los Robles St. A+
C. I. Harbor, at Hobie Beach Lakshore Dr. A C
C. I. Harbor, Beach Park at South end of Victoria Ave. C Silverstrand , at San Nicholas Ave. A A A+
Silverstrand, at Santa Paula Dr. A A A
Oil Piers Beach, south of storm drain A A+
Silverstrand, at Sawtelle Ave. A A A+
Port Hueneme Beach Park, 50 yards north of the pier A+ A A Ormond Beach- J Street drain A B A
Ormond Beach- Oxnard Industrial drain, 50 yds. no. of the drain A A B Ormond Beach- Arnold Rd. A+ A+
Point Mugu Beach, at parking lot A+ A+
Thornhill Broome Beach, at parking lot A A+
Sycamore Cove Beach, 50 yards south of the creek mouth A+ A+ County Line Beach A+ A+ A+
Hobson County Park, at stairs A+ A+
Staircase Beach, bottom of staircase A+ A+
Faria County Park, at stairs A B D
Mandos Cove A+
CALIFORNIA GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
60 HEAL THE BAY // 2023–2024
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
CLATSOP COUNTY
Cannon Beach at Ecola Creek mouth A A+
Cannon Beach near Ecola Court storm outfall A A+
Ecola Court pipe at Gower Street discharge to Cannon Beach A A+ Ecola Creek at the mouth of Logan Creek A A+
Seaside Beach at 12th Avenue A+ A+
Seaside Beach at Broadway turn around A+ A+
Seaside Beach at U Avenue A+ A+
Tolavana State Park Beach at mouth of Chisana Creek B C Tolovana SP Beach 50m south of Chisana Creek B C
Tolovana SP Beach in Chisana Creek at the pipe outflow B C Tolovana State Park beach 50m north of Chisana Creek B C
COOS COUNTY
Bastendorff Beach 250m S of Minor Cr A A
Bastendorff Beach 400m south of jetty A A
Bastendorff Beach at Miner Creek A A
Bastendorff Beach north cove at the jetty A A
Big Creek at Sunset Bay SP footbridge A A
Miner Creek 200m upstream from Bastendorff Beach A A
Sunset Bay State Park Beach at north beach access A A
Sunset Bay State Park Beach at restroom A A
Sunset Bay State Park Beach at the mouth of Big Creek A A
CURRY COUNTY
Harris Beach State Park at mouth of Eiler Creek A A
Harris Beach State Park south cove southwest of parking area A A Harris Beach State Park west of access ramp and restrooms A A Harris Creek 100 m upstream from the mouth A A
Harris Creek north cove at mouth of Harris Creek A A
Hubbard Beach 50m N of Hubbard Cr A A
Hubbard Cr Beach 50m S of Hubbard Cr A A
Hubbard Cr between Hwy 101 and Beach A A
Hubbard Creek Beach at mouth of Hubbard Creek A A
Macklyn Creek 50m upstream from mouth A A+
Mill Beach at Macklyn Cr A A+
Mill Beach Macklyn Cove south side of Table Rock A A+
Mill Beach north Macklyn Cove at Zwagg Island A A+
LANE COUNTY
Heceta Beach at the mouth of the north runoff at Driftwood Shores Resort A Heceta Beach at the mouth of the south runoff at Driftwood Shores Resort A Heceta Beach at the south end pipe runoff A
Heceta Beach middle site at Driftwood Resort A
OREGON GRADES BY COUNTYIV APPENDIX / B
61 HEAL THE BAY // 2023–2024
LINCOLN COUNTY
Agate Beach at mouth of Big Creek B A+
Beverly Beach 100 m north of ramp at beach access B B
Beverly Beach 100 m south of ramp at Beach Access B B
Beverly Beach at the mouth of Spencer Creek B B
Big Creek at Agate Beach Wayside at footbridge B A+
D River at Hwy. 101 Bridge A A+
D River Beach 200 meters south of restroom A A+
D River Beach at mouth of D River at north corner of parking area A A+ D River Beach west of public restroom A A+
Hill Creek at Seal Rock Beach at outflow W of HWY 101 A A Little Creek at Seal Rock Beach at outflow W of HWY 101 A A Nye Beach 100m north Nye Cr. Outflow W of NW 6th street B A Nye Beach at rocky outcrop west of Olive Street B A
Nye Beach turnaround at discharge pipe (fresh water) B A Nye Beach turnaround at mouth of Nye Creek B A
Seal Rock Beach at the mouth of Hill Creek A A
Seal Rock Beach at the mouth of Little Creek A A
Seal Rock Beach at the north access State Wayside trail A A Spencer Creek at Beverly Beach at Hwy 101 bridge B B
TILLAMOOK COUNTY
Hawk Creek at the Salem Avenue bridge A A
Kiwanda Beach at Dory Launch A+ A+
Kiwanda Beach at mid mound A+ A+
Kiwanda Beach at S site A+ A+
Manzanita Beach at Neahkahnie-Manzanita State Recreation Site (marine) B F Manzanita Beach west of Treasure Cove Lane (marine) B F Neskowin Beach at Neskowin Creek north side of Proposal Rock A A Neskowin Beach at Neskowin Creek south side of Proposal Rock A A Neskowin Creek 50 m upstream of the confluence with Hawk Creek A A Oceanside Beach State Wayside at headland A A+
Oceanside Beach State Wayside at parking access A A+
Oceanside Beach State Wayside at seep (250 meters south) A A+ Rock Creek at Rockaway Beach at South 1st Avenue parking area B F Rockaway Beach at mouth of Rock Creek at South 1st Avenue B F Rockaway Beach at the mouth of Saltair Creek B F
Saltair Creek at Rockaway Beach at south 6th Avenue B F Short Sand Beach Oswald State Park 1st creek north of Short Sand Creek A A Short Sand Beach Oswald State Park at 2nd creek north of Short Sand Creek A A Short Sand Beach Oswald State Park at mouth of Short Sand Creek A A Short Sand Creek Oswald State Park at dowstream footbridge A A Stormwater Runoff at Neahkahnie-Manzanita State Recreation Site (freshwater) B F Stormwater Runoff at Treasure Cove Lane at Manzanita (freshwater) B F Twin Rocks Beach at the mouth of Watseco Creek B F
Twin Rocks Beach at the mouth of Watseco Creek A C
Watseco Creek 100 m upstream from the mouth B F
Watseco Creek 100 m upstream from the mouth A C
OREGON GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
62 HEAL THE BAY // 2023–2024
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
CLALLAM COUNTY
Cline Spit County Park A A
Dakwas Park Beach, Neah Bay A B A
Front Street Beach, East A+ A A
Hobuck Beach A+ A+ A+
Hollywood Beach A A+
Salt Creek Recreation Area A A+
Sooes Beach A A+ A+
Third Beach, Neah Bay A+ A+ A+
GRAYS HARBOR COUNTY
Westhaven State Park, Half Moon Bay A+ A+
Westhaven State Park, South Jetty A+ A+
Westport - The Groynes A+ A+
ISLAND COUNTY
Dave Mackie Memorial County Park A+ A+
Freeland County Park/ Holmes Harbor A B
Libbey Beach County Park A+ A+
Windjammer Lagoon A+ A+
JEFFERSON COUNTY
Chetzemoka Park A+ A+
Fort Worden State Park A A+
Mystery Bay State Park A A+
Point Whitney Tidelands A A+
KING COUNTY
Alki Beach Park A A+
Carkeek Park A A+
Dash Point State Park A A+
Golden Gardens A A
Lincoln Park A A+
Redondo County Park A A+
Richey Viewpoint A A
Richmond Beach Saltwater Park A+
Saltwater State Park A A+
Seahurst Park A B
KITSAP COUNTY
Arness County Park A+ A+
Fay Bainbridge Park B C
Illahee State Park A A+
Indianola Dock B A
Joel Pritchard Park A A
Lions Field A B
Point No Point Lighthouse Park
Pomeroy Park - Manchester Beach C A+
Scenic Beach State Park A+ A+
Silverdale Waterfront Park A A+
WASHINGTON GRADES BY COUNTYIV APPENDIX / B
63 HEAL THE BAY // 2023–2024
MASON COUNTY
Belfair State Park A A
Potlatch State Park A+ A+
Twanoh State Park A+
PIERCE COUNTY
Browns Point Lighthouse Park
Dash Point County Park A A+
Jack Hyde Park A C
Owen Beach/Point Defiance Park A A+
Purdy Sandspit County Park A A+
Saltars Point Beach
Sunnyside Beach Park A A
Titlow Park B D
Waterfront Dock / Ruston Way A A+
SKAGIT COUNTY
Bayview State Park A A+
SNOHOMISH COUNTY
Brackett's Landing & Edmonds Underwater Park A+ A+
Edmonds Marina Beach Park A A+
Howarth Park A+
Jetty Island A+
Kayak Point County Park A+
Mukilteo Lighthouse Park A A+
Picnic Point County Park A A+
THURSTON COUNTY
Burfoot County Park A+ A+
Squaxin Park A A+
WHATCOM COUNTY
Birch Bay Beach & Tidelands Access A A+
Larrabee State Park, Wildcat Cove A A
Little Squalicum Park D C
Port of Bellingham Marine Park A+ A+
WASHINGTON GRADES BY COUNTYIV APPENDIX / B
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
TIJUANA
Playas Blanca F F F
El Vigia F F D
El Faro F F F
Summer Dry
Grade
Winter Dry
Grade
Wet Weather
Grade
64 HEAL THE BAY // 2023–2024
Summer Dry Winter Dry Wet W eather
(Apr–Oct) (Nov–Mar) Y ear-R
ound
A A F
Beach Report Card’s water quality grade
(See Appendix D for complete methodology)
FREQUENTL Y ASKED QUESTIONSIV APPENDIX / C
About Heal the Bay’s Annual Beach Report Card
Heal the Bay is a nonprofit environmental organization dedicated to making coastal waters and watersheds safe, healthy, and clean. We use science, education, community action, and advocacy to pursue our mission.
What is the Beach Report Card?
The Beach Report Card (BRC) transforms complicated water quality data into an easy-to-understand A–F grading format so the public can know where and when it is safe to go in the ocean. Grades are based on fecal bacteria pollution concentrations in the wave-wash. Water samples are analyzed for bacteria that indicate pollution from numerous sources, including fecal waste. The better the grade a beach receives, the lower the risk of illness to ocean users.
The BRC should be used like the SPF ratings in sunblock — beachgoers should de termine what they are comfortable with in terms of relative risk, and then make the necessary decisions to protect their health. Heal the Bay urges coastal beachgoers to use this information before they visit beaches on the W
est Coast.
What is the history of the BRC?
Heal the Bay’s first Beach Report Card was published in 1991 (with data from 1989 & 1990) and covered about 50 monitoring locations in Los Angeles County from Leo Carrillo Beach (near the Ventura County line) to Cabrillo Beach in San Pedro. At that time, beachgoers knew little about the health risks of swimming in polluted waters or the water quality at any of their favorite beaches in Los Angeles County. Beach water quality was a known public issue only when a substantial sewage spill occurred. Although beaches were routinely monitored, the data were either inaccessible or incomprehensible to the general public.
Since then, an immense amount of work has been completed and resources in- vested to reduce urban runoff pollution and sewage spills at our local beaches.
Heal the Bay is proud to have played an active role in putting legislation and policies in place to help protect public health.
What do the grades mean to the beach user?
Coming into contact with waters with elevated bacteria concentrations has been associated with increased risks to human health. The higher the grade a beach receives, the better the water quality at that beach. The lower the grade, the greater the health risks. Potential illnesses include gastrointestinal illness, eye/ear infections, upper respiratory infection and major skin rash (full body). The known risks of contracting illnesses associated with each threshold are based on a one-time, single event of ex posure (head immersed while swimming) to polluted water. Increasing frequency of e xposure or the
magnitude of bacteria densities may significantly increase an ocean user’s risk of contracting any of these illnesses.
How are grades calculated?
Heal the Bay’s grading system takes into consideration the magnitude and frequen cy of ex
ceedances above allowed bacterial levels over the course of the specified time period. Each BRC year contains three time/weather periods:
• Summer Dry = Samples taken during dry weather
between April 1 and October 31
• Winter Dry = Samples taken during dry weather
between November 1 and March 31
• Wet W
eather = Samples taken during or within 72 hours of a rain event* Water quality typically drops dramatically during and immediately after a rain storm but often rebounds to its previous level within a few days. For this reason, year-round wet weather data throughout California were analyzed separately in order to avoid artificially lowering a location’s grade, and to provide a better under standing of statewide beach water quality impacts. For the complete methodology, see Appendix D
.
NOTE: *Heal the Bay utilizes a definition of a ‘rain event’ in California as precipitation greater than or equal to one tenth of an inch (≥ 0.1”) accumulated over a period of 72 hours. Oregon and Washington criteria for a rain event is ≥0.2” of precipitation.
How current are the weekly grades?
It is important to note that the grades from the Beach Report Card represent the most current information available to the public, but they do not represent real-time water quality conditions. Currently, laboratory analyses of beach water quality samples take 18 to 24 hours to complete; then the data must be entered into a database before they are sent to Heal the Bay for a grade calculation. For weekly grades, Heal the Bay releases grades every Friday throughout the year based on the most recent available sample data for the entire west coast. Weekly grades and more can be found at www. beachreportcard.org.
Q
65 HEAL THE BAY // 2023–2024
FREQUENTL Y ASKED QUESTIONSIV APPENDIX / C
What type of pollution is measured?
Pollution is measured by sampling types of fecal indicator bacteria (FIB) including total coliform, fecal coliform, and Enterococcus species. California requires measurement of all three FIB, but Oregon and Washington only require Enterococcus. Runoff from creeks, rivers and storm drains are sources of pollution to California, Oregon, and Washington beaches. Runoff may contain toxic heavy metals, pesticides, fertilizers, petroleum hydrocarbons, animal waste, trash, and even human sewage.
The amounts of FIB present in runoff, and consequently at the beach, is currently the best indication of whether or not a beach is safe for rec reational
water contact. The link between swimming in waters containing elevated levels of indicator bacteria and health risk was confirmed in the 1995 epidemiological study conducted by the University of Southern California, Or
ange County Sanitation District, the City of L
os Angeles, and Heal the Bay,
under the auspices of the Santa Monica Bay Restoration Project.
Indicator bacteria themselves do not usually cause bather illness. Instead, their presence indi
cates the potential for water contamination with other
pathogenic microorganisms such as bacteria, viruses, and protozoa that do pose a health risk to humans. Indicator bacteria are tested for because they are easier and less e
xpensive to test for than specific pathogenic
microorganisms. At present, the report card contains no information on toxins or trash in the water or on the beach.
ABOUT INDICATOR BACTERIA
The most common types of indicator bacteria include:
• Total coliform
• Fecal coliform (or E. coli)
• Enterococcus
Total coliform, which contains coliform of all types, originates from many sources including soil, plants, animals, and humans. Fecal coliform and Enterococcus bacteria are found in the fecal matter of mammals and birds.
This fecal bacteria does not always come from humans; however, human sewage does regularly end up in the ocean through sewage infrastructure failure and storm drains.
Why is storm drain pollution so significant?
Storm drain runoff is the largest source of pollution for ocean beaches. Storm drains flow un
treated to the coast and are often contaminated with motor oil, animal waste
, pesti
cides, yard waste
, trash, and more. After a rain, FIB
densities often far ex ceed state health criteria for recreational water use .
Health officials and Heal the Bay recommend that beach users never swim within 100 yards on either side of a flowing storm drain, creek, or river; never swim in any coastal waters during a rainstorm; and stay out of the water for at least three days after a storm has ended.
Children often play directly in front of storm drains and in runoff-filled ponds and lagoons. Monitoring at “point zero” (the mouth of storm drains or creeks) is the best way to ensure that the health risks to all swimmers are minimized.
This Heal the Bay recommendation was finally adopted by the SWRCB for the 2015 swimming season. In fact, the SWRCB made point zero monitoring a criterion for receiving beach water quality monitoring funds. This was great news for beachgoers and families going to the beach. For more on storm drain impacted beaches, see “Analysis of Beach Types”.
Are beaches monitored year-round?
In California, water quality samples are collected by the appropriate health agency at a minimum of once a week from April through October as required under the California Beach Bathing Water Quality Standards (AB 411) and recommended by EPA’s National Beach Guidance and Performance Criteria for Recreational Waters (EPA’s BEACH program). Some agencies conduct year-round sampling, while oth
ers scale back their monitoring programs
dramatically from November through March, despite the fact that many oceangoers are in the water year-round.
The majority of Oregon and W
ashington water quality monitoring occurs
during the summer swimming season (Memorial Day through Labor Day). The Makah Tribe in Clallam County Washington monitors water quality on a weekly basis year-round.
Why not test for viruses?
A common question asked by beachgoers is: “if viruses cause many of the swim
ming-associated illnesses, why don
’t health agencies monitor directly
for viruses instead of indicator bacteria?” Although virus monitoring is incredibly useful in iden
tifying sources of fecal pollution, there are a number
of drawback
s to available virus measurement methods. There have been tremendous breakthroughs in the use of DNA to analyze water samples for virus or human pathogenic bacte
ria, but these techniques are still relatively
e
xpensive. In addition, interpretation of virus monitoring data is difficult because, unlike bacterial indicators, there is little data available to link health risks associated with swimming in beach water to virus densities.
Many epidemiology studies have been conducted on the West Coast and have found a strong correlation between illness rates and FIB concentrations so measuring FIB is a robust way to protect public health. However, research must be continued to refine how water quality is measured. 66 HEAL THE BAY // 2023–2024
Beach Report Card Grading and Methodology
The Beach Report Card Grading Methodology translates complex shoreline bacteria data into a grade format that is meaningful and useable by all California beachgoers.
Each geometric mean criterion exceeded is assigned a specific percentage of points lost. Non-exceedances are given 0%. The percentage of points lost from each of the three criteria divided by the number of sample days are multiplied by the ‘Total Available Points’ (any sum of percentages exceeding 100% automatically loses all 50 points available in the geometric mean component).
Single Sample Standard
Calculating the ‘Total Points Lost’ for the Single Sample Standard component is similar to the calculation used for deriving the points lost for the Geometric Mean. However, the Single Sample Standard component uses a gradient to calculate the ‘Total Points Lost’. The gradient of percentage points lost used in calculating the number of points lost is derived from work completed by the Southern California Coastal Water Research Project and Orange County Sanitation District as part of the 1998 Southern California Coastal Bight Study (see Table 5-4).
‘Percentage of points lost’ is allocated depending upon the threshold exceeded by each of the four criteria. Each single sample criterion exceeded is given a ‘percentage of points lost’. These amounts are presented in Table 5-4.
The ‘percentage of points lost’ from each of the four criteria for each sample during the time period are added together and divided by the total number of samples. Once this number is calculated (total ‘percentage of points lost’ divided by total number of samples), it is multiplied by the ‘Total Available Points’. In the Single Sample Standard component, more points are lost as the magnitude or frequency of exceedances increases.
Points lost from the Single Sample Standard component are added to the points lost in the Geometric Mean component (if applicable) and this sum becomes ‘Total Points Lost’. Once the ‘Total Points Available’ and the ‘Total Points Lost’ are calculated, a grade for a particular sample site can be determined.
Determining a Grade
% Grade =
‘TOTAL POINTS AVAILABLE’ — ‘TOTAL POINTS LOST’
‘TOTAL POINTS AVAILABLE’
Most dry and wet weather annual grades are calculated with 100 ‘T otal Available Points’, although there is no Geometric Mean component for wet weather grading. Wet weather grades are calculated by the total ‘percentage of points lost’ divided by the total number of samples and then multiplied by 100. This gives the location’s score for wet weather ‘T otal Points Lost’. This number is then subtracted from 100 to give the percentage grade.
METHODOLOGY: OREGON AND WASHINGTON
The Oregon and Washington state grade methodology (using Enterococcus standards) was adapted from the seven standard California methodology (see Appendix A1).
Total Points Available
As seen in Table 5-2, the methodology uses a standard A through F grading system, and grades are based on the following formula:
% Grade =
‘TOTAL POINTS AVAILABLE’ — ‘TOTAL POINTS LOST’
‘TOTAL POINTS AVAILABLE’
Note: The Annual and End-of-Summer Beach Report Card methodology is modified slightly to accommodate the longer time period. (For example: no greater significance is given to the most recent samples.) METHODOLOGY: CALIFORNIA
Heal the Bay’s Beach Report Card grading system is endorsed by the SWRCB and the Beach Water Quality Workgroup as an effective way to communicate beach water quality to the public
Past amendments to the grading methodology have included:
•
The inclusion of the geometric mean into the calculation •
A firm zero-to-100 point scale
• Greater weight for
Enterococcus and the total to fecal ratio relative to total coliform and fecal coliform
The methodology retains past modifications to the report card, such as the inclusion of new indicator bacteria thresholds (namely the total-to-fecal ratio), developed by the Santa Monica Bay Restoration Commission in the 1996 health effects studies of Santa Monica Bay beachgoers. It also retains the implementation of standard deviations for each indicator bacteria threshold, which was developed by the Southern California Coastal Water Research Project and Orange County Sanitation Districts during the 1998 Southern California Bight Study. Each threshold is based on the prescribed standards set in the California Department Health Service’s Beach Bathing Water Standards.
As seen in Table 5-1 the methodology uses a standard A through F grading system, and grades are based on the following formula:
% Grade =
‘TOTAL POINTS AVAILABLE’ — ‘TOTAL POINTS LOST’
‘TOTAL POINTS AVAILABLE’
[Note: The Annual and End-of-Summer Beach Report Card methodology is modified slightly to accommodate the longer time period. For example: no greater significance is given to the most recent samples.] Total Points Available
‘Total Points Available’ is derived from adding together two point components (if applicable): the Geometric Mean and the Single Sample Standard. The points for each component are listed in Table 5-2.
In order for the points in each component to become available, certain criteria must be met. (For example, the geometric mean points will be added to the ‘Total Points Available’ only if there are a minimum of four dry weather samples collected within the allotted time frame). Wet weather data is graded separately from dry weather data, and does not currently include a geometric mean component. Therefore, it is possible for ‘T otal Points Available’ to be less than 100. The new grading methodology allows for a relative grade to be determined based on the actual monitoring completed.
Once the ‘T otal Available Points’ has been determined for a specific location, then the ‘Total Points Lost’ can be calculated for the applicable grade components.
Total Points Lost
Separate calculations are used to quantify ‘T otal Points Lost’ for each applicable component from the ‘T otal Available Points’. The following describes the two calculations.
Geometric Mean
Calculating the ‘T otal Points Lost’ for the geometric mean component involves using the rolling 30-day geometric mean values calculated for each sample day (see Table 5-3).
IV APPENDIX / D
67 HEAL THE BAY // 2023–2024
TABLE 5-3: CALCULATING THE TOTAL POINTS LOST
FOR THE GEOMETRIC MEAN COMPONENT
Indicator
Exceeded
Calif. Beach Bathing
Water Standard
% of Total Available Points
Lost** Due to Exceedance
Total Avail.
Points
Enterococcus 35 80%
50Fecal Coliform 200 40%
Total Coliform 1000 20%
* Colony forming units per 100 milliliters of ocean water TABLE 5-5: CALCULATING THE TOTAL POINTS LOST FOR THE
SINGLE SAMPLE STANDARD COMPONENT
Indicator Exceeded
SLIGHT
% Points
Lost
MODERATE
% Points
Lost
HIGH
% Points
Lost
EXTREME
% Points
Lost
Total
Available
Points
Total Coliform 10% 30% 40% N/A
50 Fecal Coliform 10% 30% 40% N/A
Enterococcus 20% 40% 60% N/A
Ratio (when total
> 1,000) 25% 50% 75% 100%
TABLE 5-4: SINGLE SAMPLE GRADIENT THRESHOLDS IN CFU/100ML * Indicator Bacteria
SLIGHT
T – 1 SD
MODERATE
T + 1 SD
HIGH
> T + 1 SD
EXTREME
Very High Risk
Total Coliform 6,711–9,999 10,000–14,900 > 14,900 N/A
Fecal Coliform 268–399 400–596 > 596 N/A
Enterococcus 70–103 104–155 > 155 N/A
Total: Fecal Ratio
(when total > 1,000) 10.1–13 7.1–10 2.1–7 < 2.1
* Colony forming units per 100 milliliters of ocean water. N/A = Not applicable SD = Standard Deviation. Bold = California State Health Department standards for a single sample TABLE 5-7: CALCULATING THE TOTAL POINTS LOST FOR THE
SINGLE SAMPLE STANDARD COMPONENT
Indicator
Exceeded
SLIGHT
% Points Lost
MODERATE
% Points Lost
HIGH
% Points Lost
Total Available
Points
Enterococcus 25% 75% 100% 50
TABLE 5-6: SINGLE SAMPLE GRADIENT THRESHOLDS IN CFU/100ML * Indicator Bacteria SLIGHT
T – 1 SD
MODERATE
T + 1 SD
HIGH
> T + 1 S
Enterococcus 70–103 104–155 >155
* Colony forming units per 100 milliliters of ocean water SD = Standard Deviation. Bold = California State Health Department standards for a single sample TABLE 5-2: TOTAL POINTS AVAILABLE BY COMPONENT
Geometric Mean 50 points
Single Sample Standard 50 points
Total 100 points
TABLE 5-1: GRADING SYSTEM
A B C D F
100%–90% 89%–80% 79%–70% 69%–60% <60%
Wet weather data (>=0.2 inches of rain in previous 72 hours) is graded separately from dry weather data and does not currently include a geometric mean component.
‘Total Points Available’ is derived from adding together two point components (if applicable): the Geometric Mean and the Single Sample Standard. The points for each component are listed in Table 5-2. In order for the points in each component to become available certain criteria must be met. Oregon and Washington Summer Beach Report Card methodology calculations only include Geometric Mean scores when four or more dry weather samples are available in determining a location’s 30-day geometric mean. Therefore, it is possible for ‘Total Points Available’ to be less than 100. The grading methodology allows for a relative grade to be determined based on the actual monitoring completed.
Once the ‘T otal Available Points’ has been determined for a specific location, then the ‘T otal Points Lost’ is calculated for the applicable grade components.
Total Points Lost
Separate calculations are used to quantify ‘T otal Points Lost’ for each applicable component from the ‘T otal Available Points’. The following describes the two calculations:
Geometric Mean
Calculating the ‘Total Points Lost’ for the Geometric Mean component involves using EPA’s beach bathing indicator density of 35 for the geometric mean. If there are four or more samples included in the 30-day geometric mean calculation then the 50 points for the Geometric Mean component become available. Oregon and Washington Beach Report Card methodology calculates the percentage of geometric mean exceedance days based on the number of valid (four or more) geometric means scored during the extended time period. The percentage of geometric exceedance sample days out of valid geometric mean sample days is multiplied by the 50 available points to determine the ‘T otal Points Lost’ for the Geometric Mean component.
Single Sample Standard
The Single Sample Standard component uses a gradient to calculate the ‘Total Points Lost’. The gradient of percentage of points lost used in calculating the number of points lost is derived from the EPA’s Ambient Water Quality Criteria for Bacteria and is found in Table 5-6.
‘Percentage of points lost’ is allocated depending upon the threshold exceeded.
The penalties for threshold exceedances are presented in Table 5-7. Non- exceedances lose zero points. The ‘percentage of points lost’ for each sample during the time period are added together and divided by the total number of samples and multiplied by the ‘Total Available Points’. More points are lost as the magnitude or frequency of exceedances increases.
Points lost from the Single Sample Standard component are added to the points lost in the Geometric Mean component (if applicable) and this sum becomes ‘Total Points Lost’. Once the ‘Total Points Available’ and the ‘Total Points Lost’ are calculated a grade for a particular sample site can be determined.
Determining a Grade
% Grade =
‘TOTAL POINTS AVAILABLE’ — ‘TOTAL POINTS LOST’
‘TOTAL POINTS AVAILABLE’
Most dry and wet weather annual grades are calculated with 100 ‘T otal Available Points’, although there is no Geometric Mean component for wet weather grading. Wet weather grades are calculated by the total ‘percentage of points lost’ divided by the total number of samples and then multiplied by 100. This gives the location’s score for wet weather ‘T otal Points Lost’. This number is then subtracted from 100 to give the percentage grade.
METHODOLOGYIV APPENDIX / D
68 HEAL THE BAY // 2023–2024
Acknowledgements
The entire Beach Report Card program would not be possible without the cooperation of the many monitoring agencies across the West Coast. These agencies include:
Makah Tribe
Washington Department of Ecology
Oregon Department of Environmental Quality
Humboldt County Department of Health & Human
Services
Mendocino County Environmental Health
Department
Sonoma County Environmental Health & Safety
Marin County Environmental Health Services
San Francisco Public Utilities Commission
East Bay Regional Park District
San Mateo County Health
Santa Cruz County Environmental Health
2023–24 Beach Report Card
Report Research and Copy: Dr. Alison Xunyi Wu,
Annelisa Ehret Moe, Dr. Tania Pineda Enriquez
Data Compilation and Analysis: Dr. Alison Xunyi Wu,
Dr. Tania Pineda Enriquez
Copy Editors: Dr. Katherine Pease, Gabriele Morgan
Content Contributors: Matthew King, Cameron Weeks,
Tracy Quinn
Design: Ison Design
1444 9th Street, Santa Monica, CA 90401 | 800.HEAL.BAY | 310.451.1500 | healthebay.org The Beach Report Card’s original concept and methodology were created in part by former Heal the Bay scientists Dr. Mark Gold, Delaney Alamillo, and Mitzy Taggart. This report would not be possible without their passion and dedication to improving beach water quality and strengthening public health protection.
IV APPENDIX / E
Monterey County Health Department
San Luis Obispo County Environmental Health
Services
Santa Barbara County Environmental Health
Services
Ventura County Environmental Health Division
City of Los Angeles Environmental Monitoring
Division
Los Angeles County Sanitation Districts
County of Los Angeles Department of Public Health
County of Los Angeles Department of Public Works
City of Redondo Beach
City of Long Beach Department of Health and
Human Services
South Orange County Wastewater Authority
County of Orange Environmental Health
Orange County Sanitation District
San Diego County Department of Environmental
Health
San Elijo Joint Powers Authority
City of San Diego
City of Oceanside
Encina Wastewater Authority
Port of San Diego
State Water Resources Control Board
A special thank you to our funders for their continued support of the Beach Report Card program and the publication of this report:
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Heal the Bay
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