Illicit Discharges

What is an Illicit Discharge or Connection?

An illicit discharge is any discharge to the storm sewer system that is not composed entirely of rainwater or groundwater. Examples include the dumping of motor vehicle fluids, household hazardous waste, paint, grass clippings, leaf litter, industrial waste, restaurant waste, or any other non-stormwater waste into a stormwater system.

An illicit connection is the discharge of pollutants into a storm sewer system via pipe or other direct connection. Sources of illicit connections may include sanitary sewer taps, wash water for laundromats or car washes, and similar sources.

Warning Signs: 

  • Makeshift pipes or hoses that lead to storm drain.
  • Stains, unusual odors, structural damage to streets or gutters, and abnormal vegetative growth in nearby lakes and streams.
  • Oil and gas can be recognized as a sheen on water. These pollutants enter water bodies from stormwater runoff and illegal dumping.
  • Paint, grass clippings, pet feces, and sediment around a catch basin grate in the street.
Oil Sheen in Waterway
Paint on Storm Sewer Grate

How can I help? 

  • Report anyone dumping waste down a storm drain.
  • Take used motor oil to a quick lube or auto shop.
  • Dispose of pet waste in a trash can.
  • Avoid fertilizing your lawn before it rains.
  • Wash your car on your lawn or take it to a commercial car wash.

 If you see an illicit discharge or connection, report it to the Engineering Department.

Illicit Discharge Elimination Plan (IDEP)A blue text on a white backgroundAI-generated content may be incorrect.

The City of Walker has adopted an illicit discharge elimination plan, which falls under programming for the City’s NPDES Permit. The City uses the IDEP to investigate waters of the state for identification, and eventually elimination, of illicit discharges and connections to the municipal storm sewer system.

Read the Illicit Discharge Elimination Plan here!

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