Water quality by city
Water quality in Wyoming
EPA drinking-water records for 84 public water systems across 46 Wyoming 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 → Cheyenne 8 systems Gillette 7 systems Wilson 6 systems Jackson ·PFAS 5 systems Green River 4 systems Grover 4 systems Fort Washakie ·PFAS 3 systems Casper 2 systems Cody 2 systems Kemmerer 2 systems Mills 2 systems Riverton ·PFAS 2 systems Sheridan 2 systems Torrington 2 systems Yellowstone 2 systems Aladdin 1 system Albin 1 system Alta 1 system Baggs 1 system Bar Nunn 1 system Basin 1 system Buffalo 1 system Cokeville 1 system Dixon 1 system Douglas ·PFAS 1 system Elk Mountain 1 system Ethete 1 system Evanston 1 system F.E. Warren Afb 1 system Granger 1 system Hulett 1 system Jeffrey City 1 system Lance Creek 1 system Lander 1 system Laramie 1 system Meeteetse 1 system Moose 1 system Mountain View 1 system Newcastle 1 system Pinedale 1 system Powell 1 system Rawlins 1 system Rock Springs 1 system Star Valley Ranch 1 system Wheatland 1 system Worland 1 system