Reporting Illicit Discharge

• When you find dumped waste in or near the storm drain.
• When you notice unusual odors 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 a storm drain.

Common illicit discharges can include: sewage from RVs, water from home car washes, dirty water from businesses, cleaning fluids, paints, construction materials, food waste, and even solid materials such as dirt.

For direct discharges to Colma Creek, San Bruno Creek, or San Francisquito Creek:
OneShoreline
Email: info@oneshoreline.org
Phone: 650-844-8310

In unincorporated areas of San Mateo County:
Sustainability Department
Email: sustainability@smcgov.org 
Phone: 1-888-442-2666 

Contact the appropriate illicit discharge coordinator from the list found on the Flows to Bay website.

Note: If you are reporting an emergency situation that could pose imminent danger to health and safety, call 911.