COMMUNITY DEVELOPMENT Administration Planning Division Economic Development Building & Safety Division Engineering Division Staff Profiles & Contacts Counter Hours Plan Check Submittal Requirements Do I Need a Permit For... Sewer Storm Drains Traffic and Transportation Permits, Forms & Brochures Links Public Works Neighborhood Improvement Permits, Forms & Brochures Municipal Code FAQs Ask a Question RETURN TO CITY SERVICES The City of San Gabriel has 72 miles of sewer running beneath its surface and 1300 manholes. The city maintains the main sewer system and some easements that run along the back of certain properties. Homeowners are responsible for the sewer line that runs from their house to the point where it connects with the main line. If you have questions about the City’s sewer system, please call the Engineering Division at (626) 308-2806 or the Public Works Division at (626) 308-2826.