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.

photo of staff checking manhole

Ellis Creek Water Recycling Facility

Learn about our Ellis Creek Water Recycling Facility, which recycles water for landscape irrigation.

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.

Sewer System Management Plan (SSMP)

Learn about our Sewer System Management Plan.

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