Illicit Discharge Detection & Elimination Program (IDDE).
An illicit discharge is any flow, spill or illegal dumping to a municipal separate storm sewer system (MS4) of any substance that is not composed entirely of stormwater.
The Town of Oro Valley has developed an Illicit Discharge Detection and Elimination Program. The purpose and intent of this IDDE Program is to ensure the health, safety, and general welfare of citizens, and the environment by protecting and enhancing the stormwater quality discharged through watercourses within the Town of Oro Valley. This Program is mandated by the Federal Clean Water Act as well as State of Arizona regulations, and complies with requirements outlined in Section 6.4.3 of the Arizona Department of Environmental Quality (AZDEQ) Small MS4 Permit (AZG2016-002). Specifically, this section of the permit states that: “The permittee shall implement an IDDE program to systematically find and eliminate sources of non-stormwater to its municipal separate storm sewer system and shall develop procedures to prevent illicit connections and discharges to the MS4.”
View the video below, "Illicit Discharge - A Grate Concern", for examples of illicit discharges.
Only rain down the drain! When things like paint, oil, and other contaminants make it into storm drains or washes it is a spill. Spills include anything besides rain that could be hazardous to water quality. Have you spotted a spill in the Town of Oro Valley? Have you spotted a violator dumping something down a storm drain? If so, report it here!