What is an Illicit Discharge?
Illicit discharges are any discharges that go into the storm sewer system that are not made up of stormwater. Some examples of illicit discharges:
- Dewatering of sediment-laden water from construction sites
- Improper washing of equipment, vehicles, or other maintenance activities
- Improper connection of sanitary sewers
- Dumping or spilling of: Paint, household cleaners, chemicals, yard waste, fertilizer, oil, and other hazardous materials in or near the storm drain
Public stormwater systems are not designed to accept these wastes. Stormwater systems do not treat stormwater in the same way that sanitary sewage or waste water does. These wastes go to a wastewater treatment plant to achieve a legally-specific water quality before being discharged to our surface waters.
Exceptions
City Code makes exceptions for activities such as:
- Water line flushing
- Landscape irrigation
- Foundation or footing drains
- Firefighting activities
- Any other water source not containing pollutants
To Report an Illicit Discharge
If there is an immediate threat to human health or safety, call 911 first.
- Contact the Minnesota Duty Officer at 651-649-5451 or 1-800-422-0798
- Krista Spreiter, Natural Resources Coordinator
Email Krista Spreiter
Office Phone: 651-255-1123
Fax: 651-452-8940 - Mendota Heights Police Department
Phone: 651-452-1366
more Information
For more information on Illicit Discharges, and how you can prevent stormwater pollution: