◈ Homepage — https://www.deltadiablo.org/Skip to main content Contact Us Search: Search Home About Us District News Services Businesses Residents Financial Information Projects & Innovations Stop Carousel About Us Delta Diablo (District) provides wastewater conveyance and treatment services for approximately 218,000 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… Notice of Proposed Maximum Street Sweeping Refuse Charge Adjustments for Fiscal Years 2026/2027-2029/2030 The Delta Diablo Board of Directors will hold a public hearing on Thursday, June 25, 2026, to consider the adoption of proposed adjustments to Street Sweeping Refuse Charges for Fiscal Years 2026/2027… READ MORE » Delta Diablo Finalizes Settlement Agreement with Regulators following Sewer Spill in Shore Acres Following completion of infrastructure repair and site monitoring activities associated with a sewer line break and sanitary sewer overflow (SSO) in the Shore Acreas area of Bay Point in late 2024… READ MORE » Delta Diablo Reaches Settlement Agreement with Regulators following Sewer Spill in Shore Acres Following completion of infrastructure repair and site monitoring activities associated with a sewer line break and sanitary sewer overflow (SSO) in the Shore Acres area of Bay Point in late 2024… READ MORE » Adopted Five-Year Maximum Sewer Service Charge Rate Increases for Fiscal Years 2025/26-2029/30 The Delta Diablo Board of Directors held a public hearing on Thursday, June 26, 2025 to consider adoption of proposed Sewer Service Charges (SSCs) rate increases for wastewater utility services. After… 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 » Career Opportunities Delta Diablo is an equal opportunity employer committed to diversity in our hiring practices. Our employees enjoy a fast-paced work environment, competitive salaries and benefits, and advancement… READ MORE » Delta Diablo Celebrates 40th Anniversary of its Wastewater Treatment Plant On May 13, 2022, the District marked the 40-year anniversary of its Wastewater Treatment Plant (WWTP), which was officially opened during a ceremonial event on May 13, 1982 attended by congressional… READ MORE » Customer Satisfaction Survey Please take a few minutes to tell us how we are doing. Your answers help us continue to provide the best possible service. READ MORE » QUICKLINKS Report a Sewer Spill Household Hazardous Waste Satisfaction Survey Financial Information Board Members Services Staff Meetings Calendar Employment District News FAQs BOARD MEETINGS Most Recent Agenda MAY 27 2026 Board Meeting JUN 10 2026 Board Meeting JUL 8 2026 Board Meeting MEETINGS NOV 12 2026 Meeting COPYRIGHT © 2026 DELTA DIABLO 2500 PITTSBURG-ANTIOCH HWY, ANTIOCH CA 94509 TELEPHONE (925) 756-1900 PRIVACY POLICY DISTRICT TRANSPARENCY WEBSITE ACCESSIBILITY STATEMENT POWERED BY STREAMLINE | SIGN IN ◈ Interior Pages — 10 pages crawledSupplier Registration - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Supplier Registration In an effort to enhance outreach efforts and streamline back office functions, Delta Diablo (District) has partnered with PlanetBids to distribute bid solicitations and collect bid responses. There is no fee for vendors to register, receive Email or Fax notifications, and download District bid solicitations on the PlanetBids system. In addition, by registering with PlanetBids you will also have access to bidding opportunities from other public sector agencies, if you so choose. Please click here to register If you experience any difficulties, please contact PlanetBids Customer Support at (818) 992-1771, and identify yourself as a supplier for the District. Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ Pretreatment - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Sewer Permits Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Pretreatment Wastewater treatment processing is one of the most highly-regulated industries in the nation. It is designed to remove pollutants to protect public health and local waterways, with pretreatment being an essential component of helping reduce pollutants at their source. Delta Diablo’s Industrial Monitoring Department is responsible for regulating the wastewater discharge from business and industry to ensure that hazardous substances (solvents, pesticides, metals, grease, petroleum, etc.) are not discharged into the sewer system. Part of the regulations include establishing numerical limits for those pollutants that can be discharged into the sewer (known as local limits). Permits are issued to specific business types, as well as any industry or business that has a potential to exceed local limits. The term “pretreatment” means the reduction of the amount of pollutants, or the alteration of the nature of pollutant properties in wastewater prior to, or in lieu of, discharging or otherwise introducing such pollutants in a publicly owned treatment works (POTWs) such as Delta Diablo (40 CFR 403.3). The pretreatment program at Delta Diablo serves to protect the District’s collection wastewater treatment, recycled water facilities, the Delta, and the safety of its workers by limiting the pollutants discharged into sewer systems. Special Discharge Permit (SDP). Delta Diablo issues a Special Discharge Permit for temporary discharge such as construction projects. SDPs are short term-not to exceed one year. They are for limited volume, non-standard wastewater discharge of many different types of wastewater or groundwater that meet the special discharge requirements included in the SDP application: Special discharge permit applications: Zone 1 (Bay Point) (pdf ) Zone 2 (Pittsburg) (pdf) Zone 3 (Antioch) (pdf) General Resources District Code (pdf) - The codification of ordinances that have been adopted by the Delta Diablo (District) Board of Directors that define and direct how the District conducts business. Chapter 2.28 of the Code contains the District's pretreatment regulations, including local limits. Baseline Monitoring Report (pdf) - All applicable sites based on the SIC Code listing above are required to submit the Baseline Monitoring Report (BMR) to the District For additional information, please contact one of our Pretreatment Department staff: Staff Member Phone Email Jason Yun, Environmental Compliance Specialist II 925.756.1913 [email protected] Miracle Odurukwe, Environmental Compliance Specialist I 925.756.1929 [email protected] Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ REMINDER – No Wipes in the Pipes - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects This item appears on Homepage 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 San Joaquin Delta from pollution. Wipes go in the trash. Flush only pee, poo and toilet paper. Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ Request a Speaker - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects About Us Organization Awards and Honors Community Engagement Community Outreach & Education Programs Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Calendar Employment Videos Related Links Request a Speaker Delta Diablo (District) staff can be available to publicly speak about our award-winning wastewater services, environmental stewardship activities, wastewater as a career, and other relevant water resource recovery topics. We provide speakers, at no charge, for community events, conferences, career forums, school classrooms, workshops, and environmental programs. If you would like to request a speaker on behalf of your group, please send an email to [email protected] and provide full details of the event and audience or fill out the form below. Where possible, we ask for at least 30 days' notice to allow for scheduling arrangements. Name (required) Email (required) Phone Date(s) Requested Number of attendees There was a problem saving your submission. Please try again later. Please wait while your submission is being saved... Submitting... Submit Thank you, your submission has been received. Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ FAQs - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects This item appears on Services Homepage FAQs Delta Diablo operates 24 hours a day, seven days a week, 365 days per year. Serves over 200,000 residents in Antioch, Bay Point, and Pittsburg (wastewater treatment). 54 square mile service area. Average daily wastewater flow is 12.4 million gallons. 2016 "Platinum 13" National Association of Clean Water Agencies Award, recognizing 13 years of perfect compliance of the National Pollutant Discharge Elimination System (NPDES). 2016 Governor’s Environmental and Economic Leadership Award (GEELA). 2016, 2012 and 2008 Best Medium-Sized Wastewater Treatment Plant in California Award from the California Water Environment Association. 2016 Community Engagement & Outreach Person of the Year Award from California Water Environment Association. 2016 East Bay Innovation Award received from the East Bay Economic Development Alliance. Beneficial reuse of over 90% of biosolids. Operates one of the largest industrial recycled water plants in California, providing 6.4 million gallons a day of recycled water for industrial and irrigation uses. Performs street sweeping functions. Conducts storm water inspections. Undertakes Pretreatment/Pollution Prevention Program for industrial customers. Manages the Delta Household Hazardous Waste Collection Facility for 338,158 East Contra Costa County residents. Actively exploring new renewable energy sources: biosolids-to-energy, solar, grease-to-energy, and food-to-energy. Lead agency for four regional Coalitions:Western Recycled Water Coalition (22 agencies)East County Household Hazardous Waste (6 agencies)East County Integrated Regional Water Management (11 agencies). Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ Related Links - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects About Us Organization Awards and Honors Community Engagement Meetings Calendar Employment Videos Related Links Related Links Here are links to other agencies' websites that may be of interest to you: American Water Works Association (AWWA): Established in 1881, AWWA is the largest nonprofit, scientific, and educational association dedicated to managing and treating water. With approximately 50,000 members, AWWA provides solutions to improve public health, protect the environment, strengthen the economy, and enhance quality of life. Bay Area Consortium for Water and Wastewater Education (BACWEE): BACWEE was launched in 2007 to connect local water and wastewater employers to a pool of interested students; the next generation of water and wastewater professionals in our area. Baywise.org: This website is a collaboration between the Bay Area Clean Water Agencies' (BACWA) pollution prevention group, known as the Bay Area Pollution Prevention Group (BAPPG), and the Bay Area Stormwater Management Agencies Association (BASMAA). They have come together to educate Bay Area residents and businesses about simple, cost-effective ways to protect San Francisco Bay by preventing pollution at the source. BAYWORK: BAYWORK is a consortium of Bay Area water and wastewater utilities working together to ensure that we will have the reliable workforce needed to serve customers and protect the environment. BAYWORK activities, programs, and events are open to employees of all Bay Area water and wastewater utilities. Contra Costa County: A county in the state of California, Contra Costa has a population of over one million people and covers a total area of 804 square miles. The county seat is Martinez. City of Antioch: A city within Contra Costa County which is located in the East Bay region and within the San Joaquin-Sacramento Delta. The 2010 census reported a population of 102,372 residents. City of Pittsburg: A city within Contra Costa County which is located on the southern short of the Suisun Bay in the East Bay region of the San Francisco Bay Area. The 2010 census reported a population of 63,264 residents. California Water Environment Association (CWEA): Founded in 1927, CWEA is a not-for-profit public benefit association of 9,300-plus water quality professionals who work for public agencies and collection systems, engineering firms, and equipment and service suppliers. CWEA members are responsible for cleaning California's water and returning it safely to the environment. CWEA educates and certifies water quality professionals, disseminates technical information, and promotes sound policies to benefit society through protection and enhancement of our water environment. CWEA offers services at the state level, as well as locally, through 17 geographical Local Sections . CWEA is a proud state member association of the Water Environment Federation , which provides technical education and training for thousands of water quality professionals. California Water Environment Association (CWEA) - San Francisco Bay Section (SFBS): Comprises more than 1,400 professionals from all disciplines related to wastewater collection, treatment, reuse, and disposal. SFBS members work for public agencies that operate and regulate wastewater system, as well as industry, academia, environmental groups, engineering consultants, and equipment operators. The SFBS is a forum for wastewater-industry people to share information, experiences, and opinions. The section also endeavors to improve the public’s knowledge and understanding of water pollution control. SFBS was founded in 1947. Within CWEA, the water facilities associated with the SFBS are those in Alameda and Contra Costa counties, the City and County of San Francisco, and San Mateo County, north of an east-west line extending from Alameda County’s southern boundary. California Association of Sanitation Agencies (CASA): For over 60 years, CASA has been the leading voice for public wastewater agencies on regulatory, legislative, and legal issues. They are an association of local agencies engaged in advancing the recycling of wastewater into usable water, generation of renewable energy, and other valuable resources. Through these efforts, we help create a clean and sustainable environment for Californians. Earth911.com : Earth911 has created a community that helps consumers find their own shade of green, match their values to their purchase behaviors, adopt environmentally sound practices, and drive impactful environmental changes. They deliver a mix of targeted content and eco-conscious products that influence positive environmental actions so that you can live a happier, healthier, sustainable lifestyle; one that protects this wonderful planet we call home. National Association of Clean Water Agencies (NACWA): NACWA was established in 1970 by a group of individuals representing 22 large municipal sewerage agencies. They came together to secure federal funding for municipal wastewater treatment and discuss emerging national interest in improving the quality of the nation's waters, based upon the shared goal of effectively representing the interests and priorities of publicly-owned treatment works (POTWs). Tri-Valley Regional Occupational Program: Regional Occupational Programs (ROP) provides engaging learning opportunities for high school students eager to acquire career training and technical skills essential for business and industry employment. ROP now reaches middle school levels, which creates a seamless transistion from secondary to post-secondary. Water Environment Federation (WEF): WEF is a not-for-profit technical and educational organization of 33,000 individual members and 75 affiliated Member Associations representing water quality professionals around the world. Since 1928, WEF and its members have protected public health and the environment. As a global water sector leader, our mission is to connect water professionals; enrich the expertise of water professionals; increase the awareness of the impact and value of Meeting - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects Nov 12 2026 Meeting Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ Board Members - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Meetings Calendar Employment Videos Related Links Board Members The Board of Directors meet the second Wednesday of the month at 4:30 p.m. Jelani Killings, Council Member, City of Pittsburg Jelani Killings began serving on the Board of Directors in June 2025 representing the City of Pittsburg in his capacity as Mayor. Director Killings… Read more » Shanelle Scales-Preston, Contra Costa County Board of Supervisors Shanelle Scales-Preston began serving on the Delta Diablo Board of Directors in January 2025, representing the unincorporated community of Bay Point… Read more » Monica Wilson, Council Member, City of Antioch Monica Wilson has served on the Delta Diablo Board of Directors since January 2021, representing Antioch in her capacity as a City Councilmember where… Read more » Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ Notice of Proposed Maximum Street Sweeping Refuse Charge Adjustments for Fiscal Years 2026/2027-2029/2030 - Delta Diablo Skip to main content Contact Us Tell us how we're doing Search: Search Toggle navigation Home About Us Organization Board of Directors Forms & Disclosures Organizational Chart Staff Mission & Vision Strategic Plan Awards and Honors Community Engagement Community Outreach & Education Programs Research Vessel Robert G. Brownlee Classroom Presentations Kid's Page Public Information Office Publications Media Inquiries Request a Speaker Request a Plant Tour Science and Engineering Fairs Meetings Board of Directors Finance Subcommittee Personnel Subcommittee Integrated Financing Corporation Calendar Employment Videos Related Links District News Services Report a Sewer Spill Street Sweeping & Stormwater Sanitary Sewer Management Plan Household Hazardous Waste Information FOG - Fats, Oil & Grease Recycled Water Recycled Water Quality Data Recycled Water Terminology User Monitoring and Reporting Customer Satisfaction Survey Businesses Sewer Services Charges Street Sweeping Refuse Charges Doing Business with Delta Diablo Supplier Guide Supplier Registration Current Bid/RFP Opportunities Delta Diablo Surplus Sewer Permits FAQs Hazardous Waste Street Sweeping & Stormwater Pretreatment FOG - Fats, Oil & Grease Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Batteries Electronic Waste Mercury Pharmaceuticals Reuse Room Sharps Paint Special Events Marine Flares Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Financial Information Sewer Services Charges Street Sweeping Refuse Charges Transparency Enterprise System Catalog Projects & Innovations Regional Partnerships Western Recycled Water Coalition Bay Area Biosolids Coalition East County Water Management Association Capital Improvement Program Current Bid/RFP Opportunities Current CIP FY25/26-FY29/30 Key Capital Projects Residents Sewer Services Charges Street Sweeping Refuse Charges Household Hazardous Waste Recycled Water Street Sweeping & Stormwater Sewer Permits FOG - Fats, Oil & Grease Flushable Wipes Notice of Proposed Maximum Street Sweeping Refuse Charge Adjustments for Fiscal Years 2026/2027-2029/2030 The Delta Diablo Board of Directors will hold a public hearing on Thursday, June 25, 2026, to consider the adoption of proposed adjustments to Street Sweeping Refuse Charges for Fiscal Years 2026/2027 through 2029/2030. Following the public hearing, the Board may adopt a resolution establishing updated charges for street sweeping services beginning in FY 2026/2027 and setting maximum allowable increases through FY 2029/2030. What Street Sweeping Services Does Delta Diablo Provide to Customers? In addition to providing wastewater conveyance and treatment services, Delta Diablo (“District”) administers street sweeping services for over 218,000 residents in Antioch, Pittsburg, and Bay Point. Street sweeping helps prevent pollution of local waterways by removing sediment, contaminants, and debris from streets before wind or rain can carry the material into storm drains that discharge directly to local receiving waters. In addition, these services reduce the potential for localized flooding due to clogged storm drains, and enhance visual aesthetics and road safety in local neighborhoods. The District administers a contract with a street sweeping service provider for Antioch and Bay Point, as well as a contract with the City of Pittsburg, which directly performs its services. In addition, the District responds to customer inquiries and concerns and supports partner agency efforts to coordinate public education and outreach efforts regarding route schedules and street access. Why is Delta Diablo Proposing Street Sweeping Refuse Charge Adjustments? Although the District has not increased Street Sweeping Refuse Charges (SSRCs) since 1997, street sweeping program costs have increased significantly in recent years due to new prevailing wage requirements for the contract service provider in Antioch and Bay Point, and incorporation of full program costs for Pittsburg. In addition, the District has completed an updated Street Sweeping Cost-of-Service Study, which required rebalancing revenue needs between residential and non-residential customers by community. Proposed Maximum Street Sweeping Refuse Charge Adjustments (FY26/27-FY29/30) The District collects SSRCs from customers on the property tax roll each year to fund street sweeping services. Based on the updated Cost-of-Service Study and cost increase drivers, the District is proposing SSRC revenue increases for Fiscal Years 2026/2027-2029/2030 (FY26/27-FY29/30) to ensure sufficient revenue is collected to meet program needs. In compliance with California Constitution Article XIII(D), Section 6 (“Proposition 218”), the proposed maximum SSRCs for FY26/27-FY29/30 are based on the FY26/27 Cost-of-Service Study (prepared by IB Consulting), which evaluated the cost of providing street sweeping services and allocates charges in proportion to service level (i.e., curb miles swept) for each parcel. The Study will be available for review at the District’s offices and website. Proposed maximum SSRCs for non-residential customers (i.e., commercial, industrial) were developed based on service levels and parcel land use. The proposed maximum SSRCs by customer type, location, and fiscal year are presented in Tables 1 and 2 below. Public Hearing and Protest Procedures The Board of Directors will hold a public hearing on the proposed Street Sweeping Refuse Charge (SSRC) increases on Thursday, June 25, 2026, at 4:30 p.m., in the Board Room at 2500 Pittsburg-Antioch Highway, Antioch, California, 94509 . After close of the public hearing and consideration of all public comments and written protests received, the Board of Directors will consider whether to implement the proposed SSRC increases. Written protests must be received by the District (attention of “Office Manager/Secretary to the Board”, 2500 Pittsburg-Antioch Highway, Antioch, California, 94509) prior to the close of the public hearing and must include your property address and the Assessor Parcel Number found on your mailing label. At the close of the public hearing, the Secretary to the Board will announce the total number of protests, including any received by the close of the public hearing. If written protests are presented by a majority of the parcel owners in the District’s service area, the District cannot implement the SSRC revenue increases. Proposed SSRC Adjustments Prop. 218 Notice Proposed SSRC Adjustment Board Presentation - April 23, 2026 Proposed SSRC Adjustment Fact Sheet - May 2026 Copyright © 2026 Delta Diablo 2500 Pittsburg-Antioch Hwy, Antioch CA 94509 Telephone (925) 756-1900 Privacy Policy District Transparency Website Accessibility Statement Powered by Streamline | Sign in × Search results Search Search Close ^ Streamline Streamline Technology for Special Districts Log in Email Password Remember me Forgot your password? Sign in as Streamline staff