What is an illicit discharge? | City of Findlay, Ohio

What is an illicit discharge?


An illicit discharge is defined as any discharge into a storm drain system that is not composed entirely of storm water. The exception includes water from fire-fighting activities and discharges from facilities already under an NPDES permit. Illicit discharges are a problem because, unlike wastewater which flows to a wastewater treatment plant, storm water generally flows to waterways without any additional treatment. Illicit discharges often include pathogens, nutrients, surfactants, and various toxic pollutants.

Examples of illicit discharges would be disposing of used motor oils, antifreeze, vehicle fluids, or even pet waste into a catch basin. Sanitary sewer lines or washing machine lines connected to the storm sewer system are serious violations of the illicit discharges.

If you see an illicit discharge event, please contact the Storm Water Hotline at 419-424-7121 from 8 a.m. to 5 p.m. weekdays. After hours please leave a detailed message including the location, time and material being dumped. If you want a return phone call please leave your name and phone number, but this is not required.

in Utilities – Storm Water