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Sewer Collection System

What We Do

Petaluma’s sewer utility collects, treats, and reuses or disposes of domestic, commercial and industrial wastewater generated by Petaluma and the unincorporated Sonoma County community of Penngrove.

The wastewater collection system is the underground piping that transports raw (untreated) wastewater from businesses and residences to the treatment plant. This system consists of more than 195 miles of sewer collection pipes and nine pump stations. The wastewater is sent to the Ellis Creek Water Recycling Facility, where it is processed and recycled for irrigation or released into the Petaluma River.

On May 2, 2006 the State Water Resources Control Board (SWRCB) issued Statewide General Waste Discharge Requirements for Sanitary Systems, Water Quality Order No. 2006-0003 (order).  The order requires any public agency that owns or operates a sanitary sewer system more than one mile in length comply with the requirements of the WDR in order to reduce the number of Sanitary Sewer Overflows (SSO).

View the City's Sewer System Management Plan:

SSMP Main Document

Element 2 Appendix

Element 4.1 Maps

Element 4.2 Maintenance

Element 4.3 SLGP Brochure

Element 4.4 SLGP App

Element 4.5 CIP Budget

Element 4.6 CWEA Handbook

Element 5 Engineering Standards

Element 6 SSO Response Plan

Element 7 Food Service

Element 9 SSO Reports-Audit

Petaluma PIPS Force Main Contingency Plan Final

Sewer Overflow and Backup Response Plan

View the City of Petaluma's Sewer System Management Plan:

SSMP Audit 2018

SSMP Audit 2020

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Water Recycling Facility

Learn about our Ellis Creek Water Recycling Facility, which recycles water for irrigation and turns waste into biofuel.

Environmental Services

The Environmental Services team works with residents and businesses to help the sewer system work at its best.

Sewer Lateral Replacement

This program helps homeowners upgrade their sewer lateral pipe.

Report a Problem

If you see (or smell) something, say something. Click here to let us know something is wrong. Or call 707-778-4546.

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