Permits/Connection Information

Getting wastewater from your home to Central San’s treatment plant is what we’ve done for more than 70 years. Whether you want to connect to the sewer system or see a need for a repair, Central San is there.


Hearing July 23 to Adopt Changes to Central San’s Standard Specifications for Design and Construction

Background:  Central San’s Standard Specifications for Design and Construction was last updated in 2014. Since that document was published, staff has continued to solicit comments from internal and external customers, and has revised the document to clarify requirements, and include additional requested information on materials, methods, technologies and industry practices. Section 9.08.010 of the District Code requires that the Board of Directors establish the standard specifications by an uncodified ordinance.


Operations During Shelter-In-Place Order

Contra Costa County has extended the Shelter-in-Place order (“Orders”) until May 31, 2020, while easing some of the previous conditions. Under the new orders, all construction projects will be allowed to resume as long as the project complies with safety protocols included with the order. 


Sewer Repairs
Sanitary Sewer Repairs - Information for Property Owners

“Who is responsible for sanitary sewer repairs?”

Central San maintains all public sewer mains within our 145 square mile service area within Central Contra Costa County. This includes over 1500 miles of pipelines, which are generally 8-inch inside diameter or greater, and located within public streets or easements dedicated for Central San’s use.


New Connections

Whether you’re a homeowner, business owner, developer, or contractor who wants to hook up to the sewer system, Central San’s permit counter can help you with the process.

Download a printable version of this page

An Applicant’s Guide to Procedures for Side Sewers Permit Process – New Connections


The construction of a new building normally requires a connection to the Central San sewer system.  Central San has developed procedures to approve the connection, collect applicable fees, and inspect the construction of any sewer facilities.


Connection Fees

Sewer connection fees are handled by Central San’s Permit Counter. While the basic fee for a residence to connect to sewer is approximately $9,000, there are many stipulations and situations that can significantly affect this figure.  For an estimated fee quote for your connection fees, please contact the Central San Permit Counter at (925) 229-7371.

For more information, please read our Overview of Central San Connection Fees fact sheet or call (925) 229-7371