Illegal Dumping

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Illegal Dumping/Discharges In or Near Storm Drains

Nothing besides clean water may be dumped or allowed to flow into a storm drain. Common examples of illegal discharges include pesticides, washwaters, sewage, automotive fluids, paint, construction materials and wastes, sediment and/or silt, and food wastes.

When do you report an illegal discharge or dumping incident?

  • When you see a person dumping anything into the storm drain. This activity is illegal!
  • When you notice unusual odors in or near the storm drain.
  • When you see dumped wastes and materials in or near the storm drain.
  • When the storm drain system has larger than normal flows during dry periods.

To report an illegal discharge or dumping incident that occurred in Cupertino, contact the City of Cupertino at the following phone numbers or by reporting it online:

Monday –Thursday from 7:30 am – 5:30 pm, call  408.777.3354 or
Monday – Friday from 6:00 am – 3:00 pm, call  408.777.3269
Friday – 7:30 am – 4:30 pm, call 408.777.3354
After Hours – 408.299.2507 (Santa Clara County Communications will notify the City’s on-call staff).