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Illicit Discharge Elimination Program

The City of Redmond Illicit Discharge Elimination Program (IDEP) is a key component of Redmond's National Pollutant Discharge Elimination System (NPDES) Phase II Permit. The goal of IDEP is to reduce the amount of pollution to groundwater, streams, Lake Sammamish, and the Sammamish River from storm sewers.

The project focuses on the elimination of improper connections to the storm sewer system, elimination of illegal dumping into storm sewers and minimizing the amount of seepage into the storm water system from the sanitary sewer system and septic systems.

We all know that what we flush down the toilet ends up at the wastewater treatment plant. What people don't realize is that things that are dumped into stormwater catch basins and drains, go directly to our lakes and rivers without treatment. These are the same lakes, creeks and rivers that we boat, fish and swim in.

The goal of the IDEP is to eliminate the discharges that are harmful to both people and the environment.

If you would like to spread the message of protecting our waters by preventing illicit discharges, print and share the City’s publication “The River Starts Here”.  (This brochure is in pdf format.  In order to view or print the document, you must have Adobe Acrobat Reader installed on your computer. Click here to obtain a free Acrobat Reader.) 

For more information, please contact the Natural Resources Division at 425-556-2825 or nr@redmond.gov.