Water quality by city
Water quality in Montana
EPA drinking-water records for 219 public water systems across 111 Montana cities — the contaminants found and the certified filters that remove them. Pick your city for its full report.
Know your ZIP? Go straight to your water report.
Check by ZIP → Billings 15 systems Missoula 15 systems Browning 8 systems Helena 7 systems Butte 6 systems Kalispell ·PFAS 6 systems Belgrade 5 systems Bozeman 5 systems Dillon 5 systems Great Falls 5 systems Libby 5 systems Pablo 5 systems East Helena 4 systems Lame Deer 4 systems Crow Agency 3 systems Gallatin Gateway 3 systems Harlem 3 systems Miles City 3 systems Sand Coulee 3 systems Sidney 3 systems Anaconda 2 systems Ashland 2 systems Ballantine 2 systems Box Elder 2 systems Chester 2 systems Columbia Falls ·PFAS 2 systems Eureka 2 systems Glasgow 2 systems Hamilton ·PFAS 2 systems Lewistown 2 systems Livingston 2 systems Pendroy 2 systems Shelby 2 systems Shepherd 2 systems Whitehall 2 systems Alberton 1 system Augusta 1 system Avon 1 system Baker 1 system Basin 1 system Belfry 1 system Big Sky ·PFAS 1 system Bigfork 1 system Black Eagle 1 system Bonner 1 system Boulder 1 system Brady 1 system Cardwell 1 system Carter 1 system Cascade 1 system Charlo 1 system Chinook 1 system Choteau 1 system Clancy 1 system Colstrip 1 system Corwin Springs 1 system Custer 1 system Cut Bank 1 system Darby 1 system Dayton 1 system Denton 1 system Dodson 1 system Drummond 1 system Dutton 1 system Flaxville 1 system Fromberg 1 system Geraldine 1 system Glendive 1 system Hardin 1 system Havre 1 system Heart Butte 1 system Hinsdale 1 system Huntley 1 system Huson 1 system Hysham 1 system Jackson 1 system Laurel 1 system Lolo 1 system Malmstrom Air Force Base ·PFAS 1 system Marion 1 system Martinsdale 1 system Nashua 1 system Nye 1 system Opheim 1 system Ovando 1 system Park City 1 system Philipsburg 1 system Pinesdale 1 system Polson 1 system Rapelje 1 system Red Lodge 1 system Ronan 1 system Ryegate 1 system St Ignatius 1 system Stevensville 1 system Stockett 1 system Sunburst 1 system Sweet Grass 1 system Thoimpson Falls 1 system Three Forks 1 system Troy 1 system Turner 1 system Valier 1 system Virginia City 1 system West Yellowstone 1 system Whitefish 1 system Wibuax 1 system Wilsall 1 system Winifred 1 system Wolf Creek 1 system Wolf Point 1 system