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Stormwater is water from rain or snow events that flows over the ground and enters into a surface water body. Stormwater flows over parking lots, roofs, loading docks, sidewalks, and other surfaces picking up potential pollutants. Stormwater flows untreated into a conveyance system which ultimately ends up in the River.

Common stormwater pollutants include pet waste, litter, loose soil or dirt and fertilizer, pesticides, and herbicides that are incorrectly applied. Stormwater pollutants aggregate as water flows overland.

The Pocatello Urbanized Area MS4 Permit defines an illicit discharge as “any discharge to an MS4 that is not composed entirely of stormwater." Section 2.4 of the MS4 Permit outlines allowable discharges.  Any questions on allowable discharges should be directed to EHS.  Idaho State partners with the City of Pocatello for illicit discharge reporting.  

If you see an illicit discharge on the Pocatello Campus, you may report it by:

  • In the event of an emergency that is immediately dangerous to human health or the environment, dial 911
  • Call Jennifer Parrott at (208) 282-3498 during normal business hours 
  • Call the City of Pocatello at (208) 234-6225
  • Report to the City of Pocatello utilizing their online reporting form

Idaho State is a co-permittee with the City of Pocatello, City of Chubbuck, Idaho Transportation Department, and Bannock County on the Pocatello Urbanized Area Municipal Separate Storm Sewer Systems (MS4) Permit, NPDES Permit #IDS028053. This permit regulates the discharge of stormwater from the Pocatello Urbanized Area (PUA) to the Portneuf River. This permit was effective on 10/1/2019 and expires on 9/30/2024. The permit requires each co-permittee to manage stormwater conveyances and infrastructure within the PUA.