What is a sewer lateral compliance certificate?

It is documentation — issued after an inspection and, where required, a pressure or air test — confirming that your private sewer lateral meets the district's standard. Some districts require this certificate at sale, remodel, or connection changes.

Do I need an inspection before selling my home?

It depends entirely on your city and district. Some Bay Area districts require a point-of-sale lateral inspection or certification; many do not. Check the county pages below and then verify with your serving district.

Who is responsible for the sewer lateral?

In most Bay Area jurisdictions the property owner is responsible for the lateral from the building out to the connection at the city main, including the portion under the sidewalk and street. Confirm the exact boundary with your district.

BAY AREA REGULATORY GUIDE

Sewer Lateral Rules & Compliance by County

Sewer lateral compliance in the San Francisco Bay Area depends on your CITY and SANITARY DISTRICT, not just your county. When buying, selling, or remodeling a property, you may be required to inspect, repair, or obtain a Compliance Certificate for your private sewer lateral. We break it down county by county below — and we always tell you where to verify the current rule.

Alameda County

EBMUD Regional Private Sewer Lateral (PSL) Program applies in participating East Bay service areas — including Oakland, Berkeley, Albany, Emeryville, Piedmont, and Alameda. Livermore and Pleasanton are served by local Tri-Valley districts; confirm which program applies to your address.

Alameda County Lateral Rules

Contra Costa County

Served by Central Contra Costa Sanitary District (Central San), Delta Diablo, Mt. View Sanitary District, and city-operated systems. Communities include Walnut Creek, Concord, Pleasant Hill, Martinez, Danville, Alamo, San Ramon, Lafayette, Orinda, Moraga, Richmond, El Cerrito, San Pablo, Pinole, Hercules, and Blackhawk.

Contra Costa County Lateral Rules

San Francisco

Served by SFPUC. The property owner is generally responsible for the side sewer out to the city main, and street-opening permits are typically required for excavation. Confirm current permitting with SFPUC and San Francisco Public Works.

San Francisco Lateral Rules

San Mateo County

Served by multiple city utilities and special sanitary districts. Lateral point-of-sale requirements vary district by district — identify your serving district and confirm whether a lateral inspection or certificate is required.

San Mateo County Lateral Rules

Santa Clara County

Served by multiple city sewer utilities and sanitary districts. Lateral inspection and point-of-sale requirements vary by jurisdiction — confirm the current rule with the district that serves your specific address.

Santa Clara County Lateral Rules

How We Help

HD camera inspection of your lateral
Pressure / air testing to district standards
Trenchless repair, pipe bursting & CIPP lining
Certification filing support

Schedule a Lateral Inspection

About this content: Educational overview. The Otter Squad is not a representative of any sanitary district or city. Regulations change — always confirm current requirements with the district that serves your specific address before any work.

Last verified: 2026-09. Regulations change — always confirm current requirements with your city or sanitary district.

GOOD TO KNOW

Frequently Asked Questions

Usually the city and the sanitary district that serves your address — not the county as a whole. Sewer service in the Bay Area is provided by a patchwork of city utilities and special districts, so a requirement that applies in one city may not apply in the next. Always confirm with the district that actually serves your property.

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