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Report Stormwater Pollution
Nothing besides water is allowed to be dumped or allowed to flow into a storm drain. This includes: washwaters, sewage, automotive fluids, construction materials, paint, sediment and/or silt, and food wastes. Reporting incidents of water pollution problems such as illegal dumping or discharges help keep our local creeks, San Francisco Bay, and the Pacific Ocean clean.

When to make a report?
  • When you notice unusual odors in or near the storm drain
  • When you find dumped waste in or near the storm drain
  • When the drainage system has unusually large flows during dry periods
  • When you see someone illegally dumping anything into the storm drain

Who to Contact?
Mark Swenson

(650) 522-7349

Sven Edlund

(650) 522-7342

Reporting an Emergency?
If you are reporting an emergency situation that could result in imminent or substantial danger to the health and safety of person, call 911.

San Mateo City Hall – 330 West 20th Avenue, San Mateo, CA 94403

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