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Monday 8am - 5pm Tuesday 8am - 5pm Wednesday 8am - 5pm Thursday 8am - 5pm Friday 8am - 5pm

Central Contra Costa Sanitary District

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Martinez, CA
Central Contra Costa Sanitary District

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Providing wastewater collection & cleaning to nearly 500,000 in the East Bay. We’re your friendly neighborhood sewer utility … and so much more!

The Central Contra Costa Sanitary District (Central San) has been protecting public health and the environment since 1946. Today we collect and clean wastewater from nearly 500,000 residents and more than 15,000 businesses in central Contra Costa County, California. Whatever goes down your drains travels through our 1,500-mile sewer system to our treatment plant in Martinez, where we clean about 13 billion gallons of wastewater every year. We also operate a popular Household Hazardous Waste Collection Facility, provide recycled water for landscape irrigation and industrial use, and promote pollution prevention through a variety of education, outreach, and inspection programs. Please visit our website for more information about Central San: centralsan.org

We welcome your comments! Our social media comment guidelines are available at: centralsan.org/socialmedia

10/30/2026

Don’t let those wipes come back to haunt you! 👻

Unlike toilet paper, most wipes are made of plastic and do not break down in water. They remain mostly intact when flushed, creating trouble in your pipes and ours.

Help avoid monster clogs and plumbing nightmares by disposing of all wipes in the trash!

10/29/2026

If you're heading to the Permit Counter or the Household Hazardous Waste Collection Facility, you can also return your ballot while you're here! 🗳️

There’s an official Contra Costa County Elections ballot drop box conveniently located outside Central San’s headquarters at 5019 Imhoff Place in Martinez. You can drop off your ballot anytime up until 8 PM on Election Day, Tuesday, November 3.

10/23/2026

10/22/2026

We were delighted to welcome legislative staff for a tour of our wastewater treatment plant yesterday, where they got an inside look at how we collect and clean over 13 billion gallons of wastewater every year.

The visit was part of a tour of special districts in Contra Costa County hosted by the California Special Districts Association. Thank you to everyone who attended!

10/15/2026

We're looking forward to the Rodgers Ranch Harvest Festival this Saturday, October 17! See you there! 🍂

Celebrate the season at the Rodgers Ranch Harvest Festival! 🍂

Gather your favorite people and head to the Ranch for a fun-filled fall day! Enjoy live music, food, storytelling, games, and local vendors as we celebrate the harvest season together.

🍁 Saturday, October 17 | 10 AM–2 PM
📍Rodgers Ranch Heritage Center, 315 Cortsen Rd
Free admission.

🌳 Stop by the Pleasant Hill Rec & Park booth to say hello and learn about all the activities and fun ahead! 🧡

See you at the Ranch!

10/09/2026

10/08/2026

Happy Water Professionals Appreciation Week! 💧 This week, we are celebrating the dedicated professionals who provide safe and reliable water, wastewater, and recycled water services across California—including our own amazing team here at Central San! Thanks for all you do to protect public health and the environment!

09/25/2026

Thanks for celebrating Pollution Prevention Week with us! Here’s one more simple tip: Don’t flush your drugs!

Flushing pharmaceuticals can pollute our waterways, harming fish and other wildlife. By properly disposing of unwanted/expired medications, you can help protect the environment and reduce the risk of accidental poisonings and drug misuse.

To find a safe, free drop-off site near you, visit: https://medtakebackcalifornia.org/

09/25/2026

We’re hiring! Central San offers well-paid, six-month internships for college/vocational students and recent grads. Gain hands-on experience and explore career opportunities while providing meaningful service to our community.

If you or someone you know is interested in applying, visit: governmentjobs.com/careers/cccsd

Address

5019 Imhoff Place
Martinez, CA
94553

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Telephone

+19252289500

Website

http://centralsan.org/

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