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Alameda County, CA, acgov.org

Unincorporated Area Clean Water Program

Urban runoff is the leading cause of water pollution in the creeks and the San Francisco Bay today. There are several simple changes we can make in our daily lives to improve and protect our local creeks and the San Francisco Bay. Click here to learn more about the history of the Clean Water Act.

What is a watershed?

clean water program poster

A watershed is an area of land over which water flows. Watersheds are delineated by topography; ridges and valleys. An example is the San Lorenzo Creek watershed, seen on the attached map (PDF - 366kb)*. There are many small watersheds in the San Francisco Bay Area. The Bay Area is also considered a large watershed with all the water draining into the San Francisco Bay.

The Unincorporated Area of Alameda County has displayed signs depicting the boundaries of the San Lorenzo Creek Watershed, seen on the attached example (JPG - 110kb).

Keeping Creeks Clean

Information for Developers

Doing Business and Preventing Water Pollution

Alameda County inspects businesses on a regular basis to ensure water quality practices are followed. If you suspect a business is polluting creeks or the Bay, contact us.

Contact us:

Alameda County Public Works Agency
Development Services Department
Clean Water Division
399 Elmhurst Street
Hayward, CA 94544

phone: 510-670-5543
fax: 510-670-5262

Call to report a spill or other pollution that could harm creeks: 510-670-5500

Further links on Water Quality:

* Portable Document Format (PDF) file requires the free Adobe Reader.

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