Central Contra Costa Sanitary District

Central Contra Costa Sanitary District 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 1

3 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

We can’t wait to see everyone tomorrow, June 13, for our 80th Open House celebration! Join us 10 am – 2 pm for all-ages ...
06/12/2026

We can’t wait to see everyone tomorrow, June 13, for our 80th Open House celebration! Join us 10 am – 2 pm for all-ages fun, including FREE food and ice cream, big trucks, hands-on games and activities, tours, toilet racers (like go-karts, but with toilets), and much more!

For details, please visit: centralsan.org/80th

***Parking Information***

We'll have free off-site parking and shuttle service at:

📍 Lot A: 2530 Arnold Drive, Martinez
📍 Lot B: 255 Glacier Drive, Martinez

Hop on our shuttle for a fun ride that includes an intro to Central San and a driving tour of our treatment plant! 🚍

See you there!

06/11/2026

The Central Contra Costa Sanitary District is marking a major milestone with a community open house this Saturday – billed as "a once-in-a-decade sewer party!"

Join us this Saturday, June 13, 10 am - 2 pm, for Central San’s 80th Open House celebration! Enjoy FREE food and ice cre...
06/11/2026

Join us this Saturday, June 13, 10 am - 2 pm, for Central San’s 80th Open House celebration! Enjoy FREE food and ice cream, big trucks, games, tours, toilet racers (like go-karts, but with toilets), and lots more fun for all ages!

For more information, visit: centralsan.org/80th

**Where to Park**

We'll have free off-site parking and shuttle service at:

📍 Lot A: 2530 Arnold Drive, Martinez
📍 Lot B: 255 Glacier Drive, Martinez

Hop on our shuttle for a fun ride that includes an intro to Central San and a driving tour of our treatment plant! 🚍

We can’t wait to see you Saturday!

It’s officially ice cream weather, and we’ve got FREE ice cream at Central San’s 80th birthday bash this Saturday, June ...
06/10/2026

It’s officially ice cream weather, and we’ve got FREE ice cream at Central San’s 80th birthday bash this Saturday, June 13! 🌞🍦Join us for a sweet treat along with big trucks, games, tours, and much more!

Learn more at: centralsan.org/80th

06/10/2026

You've invited! Full article link in the comments below. Central Contra Costa Sanitary District

06/09/2026

Our 80th Birthday Open House is right around the corner, and this P**p is getting ready to party! Come hang out with P**p (and P*e) this Saturday, June 13, at Central San’s sewer spectacular!

For all the party details, visit: centralsan.org/80th

06/08/2026

Central San is turning 80, and we can't wait to celebrate with you! Join us this Saturday, June 13, 10 am - 2 pm, for a once-in-a-decade sewer party! 🎉 Enjoy free food and ice cream, big trucks, games, tours, toilet racing, and much more. Plus, meet these two besties in person!

Learn more at: centralsan.org/80th

We’re getting the candles lit for our sewer party! 🎂We are pulling out all the stops for this once-in-a-decade event cel...
06/05/2026

We’re getting the candles lit for our sewer party! 🎂

We are pulling out all the stops for this once-in-a-decade event celebrating Central San’s 80 years of service.

Join us on Saturday, June 13, for free ice cream, food, games, big trucks, tours, and lots of surprises. We can’t wait to see you there!

Get the details: centralsan.org/80th

Our newest Pipeline community newsletter is here! 📰📬In this issue: Take a look back at how Central San has been protecti...
06/04/2026

Our newest Pipeline community newsletter is here! 📰📬

In this issue: Take a look back at how Central San has been protecting public health and the environment since 1946, and learn how we're preparing for the future. Find updates on neighborhood construction projects. Discover simple ways you can help prevent pollution. Check out our "Toilet of Tomorrow" activity for kids. And much more!

Look for it in your mailbox or read it online: https://www.centralsan.org/pipeline

Yosemite Sam may be just as excited as we are for Central San’s 80th Anniversary Open House! Please join us on Saturday,...
06/04/2026

Yosemite Sam may be just as excited as we are for Central San’s 80th Anniversary Open House! Please join us on Saturday, June 13, for this free, community-wide celebration. Our neighbors Contra Costa Animal Services will be here, too, so be sure to stop by their booth. Find all the details at: centralsan.org/80th

While we love our furry friends, we kindly ask that you leave pets at home for this event. But don’t worry! After the party, you can head across the street to meet Yosemite Sam and other adorable, adoptable animals.

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

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