In the summer of 2021, Upper Missouri Waterkeeper submitted a petition to the Montana Dept. of Environmental Quality (DEQ) requesting the designation of Gallatin County as a municipal separate stormwater system (MS4) entity to better control stormwater pollution in the…
On October 17, 2014 the Montana Dept. of Environmental Quality (DEQ) published notice of its intent to issue a stormwater permit covering discharges from small Montana municipalities. Stormwater pollution is one of the leading causes of water quality impairment in…
Growing communities across Southwest and West-Central Montana are faced with the problem of identifying and addressing serious stormwater pollution issues. What’s an MS4? MS4s (AKA Municipal Separate Storm Sewer Systems) are permited entities under the Federal Clean Water Act, designed…
