Regulatory Mechanism
SEMSWA utilizes regulatory mechanisms that include enforcement actions, procedures for tracing and removing the source, and training staff to detect illicit discharges. SEMSWA also relies on citizens to report unauthorized discharges.
Household Hazardous Waste Pick-up
In an effort to keep hazardous materials out of the storm sewer system, SEMSWA offers door-to-door waste pick-up for citizens within our service area. The program accepts most household hazardous materials including motor oil, paint, pesticides/herbicides, and household chemicals.
How to Report an Illicit Discharge or Spill:
For emergency spills or hazardous spills call 911.
Reports for illicit discharges in the City of Centennial during business hours:
- SEMSWA (303) 858-8844
- City of Centennial (303) 325-8000
Reports for illicit discharges in Arapahoe County during business hours:
- SEMSWA (303) 858-8844
- Arapahoe County (720) 874-6500
Reports for illicit discharges after-hours (City of Centennial and Arapahoe County):
- Sheriff’s office: (303) 795-4711
- Spill hotline: 1-877-518-5608