Stormwater runoff can collect pollutants from urbanized areas, which can add to or create problems in lakes and streams. New federal and state regulations require action by the City of Kalispell to minimize pollution carried by stormwater runoff. The Montana Department of Environmental Quality regulates stormwater runoff through the Clean Water Act. Kalispell was issued an MPDES permit for discharges from its Municipal Separate Storm Sewer System (MS4) in July of 2007. The City of Kalispell must implement a Stormwater Management Program, involving six minimum control measures, to control pollutants in stormwater to the maximum extent practical. For more information on the City programs, please call the Public Works Office at 406-758-7720.