CONTACT US HOME ABOUT US DISTRICT NEWS SERVICES BUSINESSES RESIDENTS FINANCIAL INFORMATION PROJECTS & INNOVATIONS About Us Delta Diablo (District) provides wastewater conveyance and treatment services for approximately 214,000 customers in the cities of Antioch and Pittsburg, and the unincorporated community of Bay Point. As part of our core mission to protect public health and the environment, the District treats approximately 13… Approved Fiscal Year 2021/2022 Sewer Service Charges Delta Diablo provides wastewater conveyance and treatment services for over 70,000 customer accounts (residential and non-residential), representing approximately 214,000 residents in Antioch… READ MORE » Modified Operations in Response to COVID-19 In response to county, state, and federal guidelines, Delta Diablo has suspended public-facing services and facility access until further notice. This includes: READ MORE » REMINDER – No Wipes in the Pipes If your toilet paper supply dwindles over the coming weeks and you switch to wipes, please DO NOT FLUSH WIPES. They do not break down in water. They clump and can break the machines that protect the… READ MORE » BOARD MEETINGS Most Recent Agenda DEC82021 Board Meeting READ MORE » Search: Go! Quicklinks QUICKLINKS REPORT A SEWER SPILL HOUSEHOLD HAZARDOUS WASTE FINANCIAL INFORMATION BOARD MEMBERS SERVICES STAFF MEETINGS CALENDAR EMPLOYMENT DISTRICT NEWS FAQS COPYRIGHT © 2021 DELTA DIABLO 2500 PITTSBURG-ANTIOCH HWY, ANTIOCH CA 94509 TELEPHONE (925) 756-1900 PRIVACY POLICY POWERED BY STREAMLINE | SIGN IN