Public Health Goals
Triennial Report (2022
-
2024)
September 16, 2025
Troy DePriest, Assistant Director of Public Works for Utilities Public Hearing for
• Requirements of the California Health and Safety Code:
• Produce Public Health Goals (PHG) report every 3 years • Conduct a public hearing and notify DDW
• Report Highlights:
• Constituents in drinking water that exceed PHGs
• Poway complies with all applicable federal and state laws Overview
Standards and Goals
1. Frequent and extensive tests confirm the quality of Poway’s water.
2. All results fell within the required standards.
3. Five constituents met the standards but tested above a goal.
STANDARDS GOALS
Legally enforceable Not legally enforceable
State MCL -- “Maximum
Contaminant Level”
PHG -- “Public Health Goal”
Federal MCL -- “Maximum
Contaminant Level”
MCLG -- “Maximum Contaminant
Level Goal”
Discussion
• Gross Alpha • Arsenic
• Gross Beta • Lead
• Uranium
• The City of Poway’s drinking water continues
to meets all state and federal drinking water
standards set to protect public health.
• It is recommended that the City Council
open the public hearing, take public input,
close the public hearing and adopt the
resolution.
• Staff is available for questions.
Conclusion
Program Update
City of Poway Water Infrastructure
Improvement Program
(PWIIP)
September 16, 2025
Robert Weber, Principal Civil Engineer
–
Utilities
Agenda
Water System Overview
Water Infrastructure
Improvement Program
Update
Twelve Month Look Ahead
City of Poway – Water Infrastructure Improvement Program
Water System Overview
• Poway currently obtains 100% of its
water supply from the San Diego County
Water Authority as untreated water via
the First Aqueduct
• Lake Poway provides untreated water
storage
• Treatment is performed at the Lester J.
Berglund Water Treatment Plant (WTP)
• Water distributed throughout the City
from the Berglund WTP
City of Poway – Water Infrastructure Improvement Program
Major Facilities
• Berglund WTP 24 million gallon per day
capacity (conventional filtration)
• Lake Poway provides 3,300 acre-feet of
storage
• 15 Pump Stations
• 20 Storage Reservoirs
• 22 Pressure Reducing Stations
• 317 miles of transmission and
distribution main
• 2,900 Fire Hydrants
• ISO Class 1 System for Fire Protection
City of Poway – Water Infrastructure Improvement Program
Clearwell
Replacement – In
Construction
Treated Water
Facilities – In Design
PWIIP - Three Phase Program
Clearwell
Bypass – In Operation
City of Poway – Water Infrastructure Improvement Program
Clearwell Bypass Project
• Temporary bypass tanks for storage
• Temporary pump station required to
pump water to the tanks
• Temporary 24” above-ground piping and
pressure reducing station
• Permanent 36” below-ground pipeline
• Construction completed under budget
($7.6 million) and in operation since
November 2022
City of Poway – Water Infrastructure Improvement Program Clearwell
Replacement – In
Construction
Treated Water
Facilities – In Design
Three Phase Program
Clearwell
Bypass – In Operation
City of Poway – Water Infrastructure Improvement Program
Clearwell Replacement Project
• Replace the 1964 lined and
covered clearwell with two concrete tanks
• Re-locate storm drains around new tanks
• Replace inlet, outlet and drain piping and
valves
• Construct two new 4 MG concrete tanks
• Removal of the temporary bypass facilities
& restoration of the softball field
Status
• $31.6 million construction contract
• Construction is roughly 75% complete
• Commissioning expected late Spring 2026
City of Poway – Water Infrastructure Improvement Program
City of Poway – Water Infrastructure Improvement Program Concrete Tank
Construction
City of Poway – Water Infrastructure Improvement Program Pipelines
City of Poway – Water Infrastructure Improvement Program Rock Removal
Clearwell Replacement Next Steps
• Final concrete placement on Friday
September 19, 2025
• Prestressing/shotcrete overcoat
• Outlet pipes
• Stairs, access hatches, appurtenances
• Testing and disinfection
• Commissioning
• Removal of the temporary bypass facilities
& restoration of the softball field
City of Poway – Water Infrastructure Improvement Program
Clearwell
Replacement – In
Construction
Treated Water
Facilities – In Design
Three Phase Program
Clearwell
Bypass – In Operation
City of Poway – Water Infrastructure Improvement Program
Treated Water Facilities
• Provides Poway with a source of treated
water (redundant supply)
• Provides operational flexibility and
enhances ability to sell water to Ramona
• Enables future WTP maintenance and
rehabilitation
• Related Projects: Emergency
Interconnection Nos. 1 and 2 with the City
of San Diego (Avenida La Valencia and
Poway Road/Springhurst Drive)
City of Poway – Water Infrastructure Improvement Program
Treated Water Facilities
What’s changed:
• SDCWA needs to rehabilitate their
Crossover Pipeline which is Poway’s only
source of raw water.
• SDCWA needs to provide Poway with water
during multiple Crossover Pipeline
shutdowns
• Solution: Poway gets its own treated
water connection to SDCWA facilities
(POW-6 FCF)
• Preserves ability for Poway to sell water to
Ramona
• The joint Poway-Ramona project has been
preliminarily recommended by
Representative Issa’s office for a $1 million
earmark
City of Poway – Water Infrastructure Improvement Program
Treated Water Facilities
Current Status
• Drafting MOU with Poway/SDCWA/Ramona
to document scope of revised project
• Staff negotiating Water Purchase
Agreement between City and Ramona
• Designer scope adjustments for final design
and CEQA
City of Poway – Water Infrastructure Improvement Program
Related Projects
Interconnections with the City of San Diego
• Emergency Interconnection No. 1 at
Avenida La Valencia and Bridle Trail – 90%
Design Phase
• Emergency Interconnection No. 2 on
Poway Road from Springhurst Drive to
Francine Terrace – Preliminary Design
Phase
City of Poway – Water Infrastructure Improvement Program
Twelve Month Look Ahead
• Emergency Interconnection No. 1 at
Avenida La Valencia Design Completion
end of 2025
• Clearwell Commissioning/Bypass
Retirement late Spring 2026
• TWF Construction Start Late 2026
• Emergency Interconnection No. 2 at Poway
Rd/Springhurst Design Completion Summer
2026
• Lake Poway Softball Field Restoration late
2026
City of Poway – Water Infrastructure Improvement Program
Questions?
City of Poway – Water Infrastructure Improvement Program