The Port Costa Sanitary Department receives the vast majority of its revenue for operations, maintenance, replacement and capital improvements from sewer service charges to its customers. No revenue is received from property taxes. Other revenue sources may include grants, loans, capacity fees, and miscellaneous fees.

The financial stability of the Port Costa Sanitary Department results from a revenue program that foresees necessary adjustments in sewer service charges. The District Board has the authority to set sewer service charges as needed to provide collection system reliability and meet all regulatory requirements for environmental protection. Pursuant to Proposition 218, proposed sewer service charge increases are automatically effective absent a majority protest of property owners served by the Department.

The Department currently has no bonded indebtedness. Two facility upgrade loans were received by the former SD-5 prior to transfer of facilities to the Port Costa Sanitary Department in 2008. Repayment of these loans will continue for twenty years.

Over time, the Department intends to build adequate reserves for emergencies, for sewer construction and for revenue stability.