Rialto Water Services
Core Capital Improvement Projects Status
WATER SUBCOMMITTEE • AUGUST 28 TH , 2025
Key Supports, CIP Investment
Grant Funding of $14M obtained, can help
offset CIP impact on ratepayers and fund
key projects like AMI
Reserves Funding of >$30M can help
offset CIP impact on ratepayers and fund
critically needed core upgrades like the
Biosolids Project
Development Impact Funds of [$10.3M]
can help offset growth-related CIP impact
on ratepayers, and fund expansion
projects like the Sewer Main upsizing
Rate-Supported Reserve Builds & Debt
Funding can help smooth CIP impact on
ratepayers
Regulatory Requirements including permit compliance,
safety and SSO mitigation, drive Priority CIP investments Annual Asset Management Planning, condition
assessments, and emergency incidence records, show
where critical needs exist or reliability is compromised Rate Impact outcomes can shape timing and prioritization of CIP investment, while Inflationary Forces affecting
operating costs can put pressure on CIP investment
Key Drivers Of CIP Investment:
CIP Progress Update 2012 to 2025
Rialto’s Wastewater Utility has significantly progressed on the ”Liquids” side, with the investment in S1, and is about to progress on the “Solids” side, with the approval of the Biosolids Project. The Collection Network condition and Master Plan growth projections defines much of the need in Wastewater. Rialto’s Water Utility needs now center around a Distribution Network with several 40-50-year old Water Mains, plus associated metering, storage, and wells capacity
Rialto 2025 Biosolids Project
Rialto 2012
Rialto 2012
<– S1 Project
Rialto 2025
5-Year Wastewater CIP
Wastewater Projects
This RWS table shows Priority
Status CIP , including where
Master Plan growth
projections are driving CIP ,
where Criticality is driving CIP ,
and where Grant funding is
driving CIP . Projects in red are
shown but suggested for
deferral with caution.
WASTEWATER PROJECTS
Project Short Name Status Condition
Rank Project Cost FY25-26 FY26-27 FY27-28 FY28-29 FY29-30 Solids Handling Approved/Funded 5 $35,589,387 $12,000,000 $23,589,387 Upsizing Sewer: Sycamore Priority N/A $5,520,000 $5,520,000 RHNC (Natue Center) Priority Grant N/A $8,000,000 $4,000,000 $4,000,000 Upsizing Sewer: Willow Ave (Grove to Foothill) Priority/MP N/A $600,000 $600,000 Upsizing Sewer (Acacia:Bonnie View to South) Priority/MP N/A $600,000 $600,000 Upsizing Sewer: Merrill Ave (Acacia to Sycamore) Priority/MP N/A $2,400,000 $2,400,000 Upsizing Sewer: Sycamore Ave (Huff to Randall) Priority/MP N/A $1,800,000 $1,800,000 Agua Mansa Sewer Lift Station Priority N/A $3,600,000 $3,000,000 $600,000 Ayala Lift Station Priority 4 $3,000,000 $3,000,000
Secondary EQ Influent Filter Pump Priority 5 $3,000,000 $3,000,000 Plant 5 Clarifiers Priority 4.5 $600,000 $600,000
Plant 5 Aeration Basins Priority 4 $1,200,000 $1,200,000 Overhaul Headworks, Plant 5 Priority 4 $1,200,000 $1,200,000 Spencer Aeration Blowers Priority 4.5 $900,000 $900,000 Barscreen #1 Replacement Priority 3.5 $300,000 $300,000 Future Sewer Main Replacement 2028 Priority 5 $1,200,000 $1,200,000 Future Sewer Main Replacement 2029 Priority 5 $1,200,000 $1,200,000 4th Disk Filter Priority N/A $900,000 $900,000
Security System Priority Grant N/A $2,000,000 $2,000,000 Manhole 2026 Deferred/Caution 5 $240,000
Demolish Plants 1 and 2 Deferred/Caution N/A $2,832,000 Manhole 2027 Deferred/Caution 5 $240,000
Manhole 2028 Deferred/Caution 5 $240,000
Flare and Biogas System Modifications Deferred/Caution NA $3,600,000 Manhole 2029 Deferred/Caution 5 $240,000
Electrical Upgrade Deferred/Caution N/A $10,368,000
Backup Power (CoGen) Deferred/Caution N/A $24,744,000
SCADA Upgrades to Lift Stations Deferred/Caution N/A $900,000 Deferred/Caution $43,404,000 $0 $0 $0 $0 $0
Grant $10,000,000 $2,000,000 $0 $0 $0 $0
Approved/Funded $35,589,387 $12,000,000 $23,589,387 $0 $0 $0 Priority $28,020,000 $9,520,000 $10,600,000 $7,200,000 $6,300,000 $2,400,000 Spend by Fiscal Year
5-Year Water CIP
Water Projects
This RWS table shows
Priority Status CIP ,
including where Master
Plan growth projections
are driving CIP , where
Criticality is driving CIP ,
and where Grant
funding is driving CIP .
Projects in red are
shown but suggested
for deferral with
caution
.
Water Projects
Project Short Name Status Condition
Rank Project Cost FY25-26 FY26-27 FY27-28 FY28-29 FY29-30 Water Main: Etiwanda (Riverside to Eucalyptus) Priority 5 $8,040,000 $8,040,000 Pressure Relief Valves (PRVs) Zone 2 to Zone 3 Priority/MP N/A $600,000 $600,000 Automatic Meter Infrastructure (AMI) Priority Grant N/A $8,000,000 $4,000,000 $4,000,000 Service line: South Alice, South Palm, West Vodden, Alru St. Deferred/Caution 5 $1,440,000 Security for Water and Wastewater Deferred/Caution N/A $2,000,000 Automatic Meter Infrastructure (AMI) Deferred/Caution N/A $8,000,000 Service line: Bonnie View (Acacia and Eucalyptus) Deferred/Caution 5 $2,880,000 4” S. Oakdale & S. Marcella (E Rialto and Allen) Deferred/Caution 5 $3,600,000 Cedar Reservoir 2, Overhaul, and Dome Preservation Deferred/Caution 4.5 $3,000,000 Well “City 3A” Groundwater Treatment System Deferred/Caution N/A $7,200,000 Service Line, Hydrant Laterals, Etiwanda Deferred/Caution 4.5 $4,200,000 Serviceline&Hydrant: Woodcrest, Yucca, etc Deferred/Caution 4.5 $2,400,000 Service Line: Cedar & Larch Deferred/Caution 4.5 $2,640,000 Service Line & Hydrant: Palm, Orange, Olive, Date Deferred/Caution 4.5 $3,960,000 Deferred/Caution $41,320,000 $0 $0 $0 $0 $0
Grant $8,000,000 $4,000,000 $4,000,000 $0 $0 $0
Approved/Funded $0 $0 $0 $0 $0 $0
Priority $8,640,000 $0 $8,640,000 $0 $0 $0
Wastewater Project
Profiles
WWTP Biosolids Upgrades Project
Wastewater Priority CIP (Status: APPROVED, Reserve-Funded) Description
Replace existing Belt Presses #1 and #2 with new Dewatering equipment. AECOM reviewed five technologies and identified Centrifuge technology as having the best lifecycle value. Replace existing Gravity Belt Thickeners #1 and #2 with new sludge thickening equipment. AECOM reviewed five technologies and identified Rotary Drum Thickeners as the best-value technology because of relatively low capital and operational costs, common use in the industry, a record of high performance, and low level of technological complexity. Bring Digester #1 online to allow Digester #2 to be cleaned, inspected and repaired. Digester #1 was last retrofitted in 2003 and has been inoperable for several years. Digester #2 Dystor lid is past its expected service life and is showing major wear. Any disruption in the operation of Digester #2 and its aged lid would burden the project with extensive cost in emergency repairs and rental equipment. Dystor covers will be also be replaced. The holding tank cover was removed in 2021 due to rust damage including multiple holes which greatly compromised the cover’s integrity. SCAQMD has required that it be replaced with a fixed lid. Furthermore, additional storage tank mixing is required to keep solids in suspension within the tank and provide a consistent and uniform feed to the new dewatering facility.
Fiscal Year 2025-26
Total Project Cost $36,972,421 Already Spent: $1,374.034 FCWA Amount: $35,598,387 Condition Score 5
Criticality Score 5
Status Approved, Reserve-Funded
Notes:
The Centrifuge system was identified as the best-value technology because of relatively low capital cost, common use in the industry, high record of performance, and relatively low technological complexity. Most importantly, centrifuges remove 6% more water than other technologies, producing lighter and drier cake. If installed at the plant, centrifuges would save an estimated $120,000 per year on hauling costs over Belt Filter Presses, noting Jacobs estimated significant additional annual savings.
Upsizing Sewer Mains in Sycamore Ave. and Baseline Rd.
Wastewater Priority CIP – Master Plan Project
Description
Construct a dedicated 8" sewer main downstream of the Sycamore Sewer Lift Station to Baseline Road. These flows will join the flows in the current sewer main in Sycamore Ave. and then be conveyed to Acacia Ave. via a newly constructed 15" sewer main in Baseline Road.
Fiscal Year 2025-26
Estimated Cost $5,520,000
Condition Score 5
Criticality Score 5
Status
Project Initiation Memo complete. Pending final authorization.
Reason for inclusion
Pipeline identified in 2022 Wastewater Master Plan. This choke point in the collection system has been known for many years and requires significant maintenance efforts until a capital project provides a permanent fix. The need for the project has been recently reaffirmed in the Wastewater Maste r Plan and a conceptual design has been identified.
Agua Mansa Lift Station
Wastewater Priority CIP – Master Plan Project
Description
Upgrade [and increase capacity of] the Agua Mansa Lift station pump, and add emergency diesel generator and security features.
Fiscal Year [2025-26]
Estimated Cost $3,600,000
Condition Score 5
Criticality Score 5
Status
Pending for project initiation memo development.
Reason for inclusion
Required to expand the capacity of the lift station for development south of Santa Ana Avenue. Lift station is in need of an upgrade and emergency backup generator.
Notes
Project scope specifically: Removal of existing pumps, installation of new pumps, removal and disposal of existing pump inlet and discharge piping and valving including replacement of existing pipe and pump supports inside the wet well, installation of new pump discharge piping and valving, minor concrete repairs to above grade portions of the wet well, minor demo and repair of existing wet well structure to accommodate new pumps, installation of new wet well lid and access hatches, removal and replacement of existing blower and duct work, install new electrical equipment and generator and demolish old electrical equipment, remove and replace chain link fence and entry gate, install flow meters and flowmeter vault with new access hatch, and other appurtenances.
Ayala Lift Station Upgrades and Repair
Wastewater Priority CIP
Description
Implement safety systems, provide SCADA communication & controls to WWTP , provide adequate standby pumping for pump redundancy, upgrade smaller 14 Hp pump to 28 Hp pump, new pump control panel, improved area lighting, new discharge piping, new discharge valves, fall protection anchor system, dual pump rail system, fall protection hatch.
Fiscal Year [2026-27]
Estimated Cost $3,000,000
Condition Score 4.5
Criticality Score 4
Status
Pending project development and initiation memo to be drafted once 26/27 fiscal year commences.
Reason for inclusion
Station working without SCADA leaves opportunity for alarm failure to allow pump failure to go unnoticed. Benefits include the ability to view flows, levels, and other data from the lift station, provide necessary safety controls at site, and provide reliable pump redundancy.
Upsizing Sewer Mains in N. Willow Ave.
Wastewater Priority CIP – Master Plan Project
Description
Upsize sewer main to a 12" line in N. Willow Ave. from W. Grove St. to Foothill Blvd. to meet current and future flows.
Fiscal Year 2027-28
Estimated Cost $600,000
Condition Score N/A
Criticality Score N/A
Status
Pending project development and initiation memo to be drafted once 27/28 fiscal year commences.
Reason for inclusion
Pipeline identified in 2022 Wastewater Master Plan.
Upsizing Sewer Mains in Acacia Ave.
Wastewater Priority CIP – Master Plan Project
Description
Upsize 12" sewer main to an 18” line in Acacia Ave. from E. Bonnie View Dr. to E. South St. to meet current and future flows.
Fiscal Year 2026-27
Estimated Cost $600,000
Condition Score N/A
Criticality Score N/A
Status
Pending project development and initiation memo to be drafted once 26/27 fiscal year commences.
Reason for inclusion
Pipeline identified in 2022 Wastewater Master Plan.
Upsizing Sewer Mains in Merrill Ave.
Wastewater Priority CIP – Master Plan Project
Description
Upsize sewer main to a 21" line in Merrill Ave. from S. Sycamore Ave. to S. Acacia Ave. to meet current and future flows.
Fiscal Year 2026-27
Estimated Cost $2,400,000
Condition Score N/A
Criticality Score N/A
Status
Pending project development and initiation memo to be drafted once 26/27 fiscal year commences.
Reason for inclusion
Pipeline identified in 2022 Wastewater Master Plan.
Upsizing Sewer Mains in Sycamore Ave.
Wastewater Priority CIP – Master Plan Project
Description
Upsize 15” sewer main to a 18" line in Sycamore Ave. from E. Huff St. to E. Randall Ave. to meet current and future flows.
Fiscal Year 2027-28
Estimated Cost $1,800,000
Condition Score N/A
Criticality Score N/A
Status
Pending project development and initiation memo to be drafted once 26/27 fiscal year commences.
Reason for inclusion
Pipeline identified in 2022 Wastewater Master Plan.
Secondary EQ Influent
Filter Pump 1, 2 & 3
–
Wastewater Priority CIP
Plant 5 Secondary Clarifiers
–
Wastewater Priority CIP
Plant 5 Aeration Basins
–
Wastewater Priority CIP
Overhaul of Headworks
–
Wastewater Priority CIP
Spencer Blowers R/R
–
Wastewater Priority CIP
Barscreen #1 Replacement
–
Wastewater Priority CIP
Disk Filter 4 Redundancy
–
Wastewater Priority CIP
Manhole Replacement
Wastewater Priority CIP
Description
Annual budget for manhole replacement is set at $240,000. Manholes are selected for replacement based on condition, which is noted during routine operations such as inspections, Hot List maintenance using frequent cleaning/jetting, and CCTV monitoring.
Fiscal Year All
Estimated Cost $240,000 per year
Condition Score Poorest-condition manholes will be selected for replacement, starting with the 5s Criticality Score Preference given to manholes with higher criticality, starting with the 5s Status
Ongoing
Reason for inclusion
Manhole rehabilitations are a necessary part of collection system maintenance and prevent manhole collapse and street damage.
Notes
Replacement cost could be reduced by coordination with Public Works prior to their planned street repairs and improvements for greater economies of scale.
This is routine work and should be funded through ORR. Individual manhole replacement projects generally have costs in the range of ORR projects.
Aged Sewer Main Replacement
Wastewater Priority CIP
Description
Replace aged sewer mains as identified by master plan, timing of paving projects, assessments or observations by collections crews, and CCTV footage and analysis.
Fiscal Year 2028-29, 2029-30
Estimated Cost $1,200,000 per year
Condition Score Those scoring in the poorest condition based on CCTV will be selected.
Criticality Score Higher criticality mains will be given preference.
Status
Ongoing.
Reason for inclusion
Some sanitary sewer lines are undersized and/or deteriorated and must be replaced to prevent impacts such as further degradation, infiltration, exfiltration, SSOs, and potentially private and public property damage. The Baseline Facility Record identifies the main lines that are in critical need of total replacement. This Record is updated each year and as field inspections are conducted and CCTV data is collected and analyzed, annual updates are made accordingly.
Notes
Costs can possibly be reduced by coordinating with Public Works prior to street repairs or improvements.
Water Project Profiles
Main Line Replacement on Etiwanda Ave.
Water Priority CIP
Description
Replace aged water main line between Riverside Ave. and Sycamore Ave. along Etiwanda Ave. This is stemming from a prospective pavement project.
Fiscal Year 2025-26
Estimated Cost $8,040,000
Condition Score 5
Criticality Score 5
Status
Planning complete. Pending for City direction.
Reason for inclusion
The water main and service lines have exceeded their lifespan and have a long history of repeated leaks, including several recent leaks which have been repaired. This project will replace 4,000 linear feet of 6” main line, 550 linear feet of service lines and associated service connections.
Notes
Pressure Relief Valves Zone 2 to Zone 3
Water Priority CIP – Master Plan
Description
Pressure Zone 3A has been experiencing lower pressures during peak water demands. Install new stations to meet and improve water supply.
Fiscal Year 2025-26
Estimated Cost $600,000
Condition Score N/A
Criticality Score N/A
Status
Project is currently under design.
Reason for inclusion
With the increase in development in the City, the greater demand for water supply has arisen. This project would assist manage the demand. Further, Zone 2 to Zone 3 PRV station is aged, the vault is shallow and located in the main traffic lane of Riverside Ave.
AMI
Water Priority CIP – Grant Funded
Description
An Advanced Metering Infrastructure (AMI) solution will automate the data collection of water meter information and to have more in-depth information on its customers’ usage and system operation.
Fiscal Year 2025-26
Estimated Cost $8,000,000
Condition Score N/A
Criticality Score N/A
Status
Project is currently under RFP review.
Reason for inclusion
Rationale for project includes to: reduce costs through efficiencies and improve quality of service, empower customers to help manage their water consumption, provide a technology platform to meet the increased information needs of its customers.
Service Line Replacement – S. Alice Ave., S. Palm Ave., W. Vodden and Alru St.
Water CIP
Description
Replace aged service lines on South Alice, South Palm, West Vodden, and Alru St.
Fiscal Year 2025-26
Estimated Cost $1,440,000
Condition Score 5
Criticality Score 5
Status
Defer/Caution
Reason for inclusion
The water service lines have exceeded their lifespan and have a long history of repeated leaks, including several recent leaks which have been repaired. This project will replace 2,000 linear feet of 6” galvanized service lines and associated service connections.
Main and Service Line Replacement on Bonnie View Dr.
Water CIP
Description
Replace aged galvanized service lines on Bonnie View Dr. between Acacia Ave. and Eucalyptus Ave.
Fiscal Year 2026-27
Estimated Cost $2,880,000
Condition Score 5
Criticality Score 5
Status
Defer/Caution
Reason for inclusion
These water service and main lines have exceeded their lifespan and have a long history of repeated leaks, including several recent leaks which have been repaired. This project will replace 400 linear feet of service lines and associated service connections.
Cedar Reservoir 2 Overhaul and Dome Preservation
Water CIP
Description
The Cedar Reservoir overhaul will include metal works, dome and structural repairs, and improvements as to be determined by the upcoming cleaning and inspection under OR&R 1819-02.
Fiscal Year 2027-28
Estimated Cost $3,000,000
Condition Score 4.5
Criticality Score 5
Status
Defer/Caution
Reason for inclusion
The reservoir has exceeded its life span by 50 years and was revealed during an inspection to have significant deterioration and corrosion of interior and exterior surfaces. The overhaul will address any aged or defective components in order to extend the life of the asset and prevent catastrophic near-term failure resulting in a loss of storage capacity.
Main and Service Line Replacement on S. Oakdale Ave. and S. Marcella Ave.
Water CIP
Description
Replace aged main and service lines on S. Oakdale and S. Marcella between E. Rialto Ave. and Allen St.
Fiscal Year 2026-27
Estimated Cost $3,600,000
Condition Score 5
Criticality Score 5
Status
Defer/Caution
Reason for inclusion
The water main and service lines have exceeded their lifespan and have a long history of repeated leaks, including several recent leaks which have been repaired. This project will replace 2,300 linear feet of 4” steel main line, 2,000 linear feet of service lines, and associated service connections.
Service Line and Hydrant Lateral Replacement on Woodcrest, Yucca, Miramonte, Althea, Manzanita, and Arrowhead Streets
Water CIP
Description
Replace aged mainline, service line, hydrant laterals, and hydrants on Woodcrest, Yucca, Miramonte, Althea, Manzanita, and Arrowhead Streets, in triangle created by Bloomington Ave., S. Lilac Ave., and W. San Bernardino Ave.
Fiscal Year 2028-29
Estimated Cost $2,400,000
Condition Score 4.5
Criticality Score 4.5
Status
Defer/Caution
Reason for inclusion
Service line laterals installed in the late 1980 to late 1990’s had a high rate of failure less than a decade after their installation due to failures in the plastic laterals. This project will allow control of replacement rather than expensive mitigation of failures. Over the years, 17% of the service lines have been replaced with copper. This project would focus on the remaining 115 service lines, 10 hydrant laterals and hydrants, and 24 service valves that require replacement.
Service Line and Hydrant Lateral Replacement on Palm, Orange, Olive and Date Streets Water CIP
Description
Replace aged service line, hydrant laterals, and hydrants on Palm, Orange, Olive and Date Streets between Foothill Blvd. and the train tracks.
Fiscal Year 2029-20
Estimated Cost $3,960,000
Condition Score 4.5
Criticality Score 4.5
Status
Defer/Caution
Reason for inclusion
World War II era lateral piping is still in service and must be replaced as a large project before failure. This pipe has exceeded its expected service life and some failures have already occurred. Historically, there have been over 40 laterals that have been replaced due to leaks, but the remainder of the lines should be scheduled for replacement as one project. This is approximately 7,000 linear feet of piping, 340 service lines and meters, 40 hydrant laterals and hydrants, and 107 valves.
APPENDIX Additional
Projects Profiles
Rialto Habitat & Nature Center
Wastewater Additional Projects
Description
The RHNC is expected to be located at or near the city’s old retention basin east of Riverside Avenue, between Santa Ana Avenue and Agua Mansa Road. The RHNC will utilize recycled water from the wastewater treatment plant, and is designed to create benefits of habitat management and open space/educational facilities.
Fiscal Year [2025-26]
Grant Funding $8,000,000
Condition Score N/A
Criticality Score N/A
Status
Additional Projects, Grant Funded
Demolition of Plants 1 & 2
Wastewater – Additional Projects
Description
Demolish obsolete Plants 1 and 2 at WWTP .
Fiscal Year NA
GMP Cost $2,832,000
Condition Score N/A
Criticality Score N/A
Status
Additional Projects
Reason for inclusion
Plants 1 & 2 were abandoned in early 2000 and 2020 respectively. Plants 1 and 2 collect water and pose odor and vector issues.
WWTP Electrical System Upgrades and Backup Power (CoGen) Wastewater Additional Projects
Description
Rework and consolidate the electrical system at the WWTP to tie diesel generators to plant and support a power backup solution.
Fiscal Year NA
GMP Cost $10,368,000 (electrical upgrades) + $24,744,000 (CoGen) Condition Score N/A
Criticality Score N/A
Status
Additional Projects
Reason for inclusion
The Regional Water Quality Control Board (RWQCB) has raised concerns that a reliable backup power system is not available at the WWTP . Plants 1-4 and 5 are not in a common electrical loop, and it is currently impossible to support the whole plant with emergency backup generators. Plant 5 electrical connection powers all the processes except the Disk Filter and tertiary treatment, which is still fed from the Plant 1-4 circuit. A single electrical loop is required to connect to all critical equipment and processes in the Rialto WWTP . This project will also provide the electrical infrastructure needed to support any new asset e.g. CoGen use of methane to produce power.