Home Residents businesses About Pinole

Public Works


Community Choice Energy

Clean Water Program

Household Waste
& Recycling

Notice(s) to Bid


Report Graffiti or Street Light Issue

Sanitary Sewer Lateral Program

Storm Drains
& V-Ditches

Streets & Sidewalks

Street Sweeping Schedule

Traffic Calming Policy

Wastewater Treatment Plant

Related Links:

Building Division

Code Violations

Emergency Info

Housing Division

Park Locations



The Pinole/Hercules Wastewater Treatment Plant is located at the foot of Tennent Avenue in the City of Pinole.

It was originally built in 1955 as a primary treatment facility. Since then, it has had two major expansions and several modifications in order to meet the needs of these cities' growing populations.

In 1972 the plant was upgraded from a primary to a secondary treatment facility, with a 2 MGD (million gallons per day) flow capacity. In 1985, the plant was again upgraded to handle a flow of 4.06 MGD. The plant serves a combined population of approximately 40,000, with an average daily flow of 3.5 million gallons.

The plant process (activated sludge) removes approximately 97% of the waste from the water. The water is then disinfected with hypochlorite. Once the disinfection process is complete, the hypochlorite is then removed and the water is pumped into the deep waters of San Pablo Bay.

All operators are certified by the state, grade levels vary from 1 through 5. Some plant personnel also hold certificates in maintenance and laboratory analysis.




To operate this facility to the highest standards and in a professional manner protecting the community and the environment.

Proposed Wastewater Service Charge Increase
>> 2018 Sewer Rate Study Report
>> Proposed Sewer Rate Increase Prop 218 Notice

Pinole-Hercules Water Pollution Control Plant Upgrades Information
>> Preliminary Design Report (March 2013)
>> Preliminary Design Slides (March 2013)

Pinole-Hercules Water Pollution Control Plant RFP Information

Request for Proposals

I. June 2009 Report to Board from Dodson Psomas
>> Psomas June 1 2009 Report to the Board no Appendix
>> Psomas June 1 2009 Report to the Board

II. Draft Preliminary Engineering Report by HDR
>> Pinole_Hercules_DEIR_Appendices
>> Appendix A- Pinole-Hercules WPCP Upgrade Geotechnical Research Letter Report 2013-02-19
>> Executive Summary
>> Pinole Table of Contents
>> TM 01- Flows and Loads
>> TM 02- Waste Discharge Requirements
>> TM 03- Treatment Plant Modeling Steady State Mass Balance Model Calibration & Design Conditions
>> TM 04- Construction Phasing
>> TM 05- Headworks- Influent Pumps, Screening, and Grit Removal
>> TM 08- Flow Equalization, Aeration Basins, Blowers, Secondary Clarifiers, and RAS-WAS Pumping
>> TM 12- Disinfection System Alternative Analysis
>> TM 13- Solids Handling
>> TM 14- Effluent Pumping
>> TM 15- Hydraulic Profile
>> TM 17- Plant Control Strategies
>> TM 18- Electrical Distribution System and Plant SCADA System Configuration Evaluation
>> TM 19- Plant Utilities and Yard Piping
>> TM 20- Demolition and Site Work

III. June 2012 Order No. R2-2012-0059 NPDES Permit No. CA 0037769 Operating Permit for Plant
>> 2012 Permit

IV. Standard Consultant Agreement with the City of Pinole
>> Standard Pinole Consulting Agreement

V. May 2009 Anti- Degregation Analysis for Proposed Wastewater Treatment Plant Discharge Modification
>> Antidegradation Analysis

VI. October 1, 2009 Technical Memorandum from Larry Wallker and Associates
>> Dilution Study

VII. Final Environmental Impact Report
>> Pinole-Hercules FEIR_06.30.10

VIII. Draft Environmental Impact Report by AECOM with Appendices
>> Pinole Hercules DEIR Appendices
>> Appendix A
>> Appendix B
>> Appendix C
>> Appendix D
>> Appendix E
>> Appendix F
>> Appendix G
>> Pinole Hercules DEIR 03.15.2010

IX. Mitigation Monitoring Plan
>> Pinole-Hercules MMRP

X. Topographic Surveys
>> AutoCAD Trailer Park
>> PDF 1-26-09
>> Topo Survey - Wastewater Plant upgrades (1-21)
>> Topo Survey - Wastewater Plant upgrades (1-32)

XI. Value Engineering Report
>> December 2013 Value Engineering Report

Miscellaneous Information

June 1, 2009 Report to the Regional Water Quality Control Board

Copyright © 2002-2014 City of Pinole. All Rights Reserved.
Website info | Privacy Policy | Accessibility