Town of Discovery Bay 

Sanitary District staff will review the project plans to ensure there will be no adverse impacts on the sanitary sewer system and no encroachment into a sanitary sewer easement. It is the applicant’s responsibility to receive sanitary approval.

The following projects require Sanitary review:

• New residences, Accessory Dwelling Units (ADU’s) and commercial buildings.
• Any project that includes excavation work for a foundation or pier, or which upon completion would prevent access to sanitary sewer facilities for routine maintenance and repairs. Examples include new structures, demolitions, additions, pools, decks, outdoor kitchens, outdoor fireplaces, retaining walls, cabanas, ground mount solar systems, pergolas/trellises/pavilions/gazebos, and carports.
• Residential additions/remodels with new fixtures requiring new drains or new fixtures that will increase the rate of flow into an existing plumbing system served by a sewer or septic system. 
• All commercial tenant improvement projects will require sanitary approval whether or not plumbing is a part of the project.
• New or modifications to pools or spas.

How to Submit a Plan for Sanitation District Approval:

Option 1: Submit Online

Fill out the below form and upload the site plan. Once reviewed and approved, your plan will be electronically stamped and returned via email.

Option 2: Submit In Person
You may also drop off your plan at the following location:

1601 Discovery Bay Blvd
Hours: Monday–Friday, 8:30 AM – 3:00 PM

Appointments are recommended.
To schedule, please contact us at:
📧 ccadmin@todb.ca.gov
📞 (925) 302-6644