Water quality in Casper, Wyoming
Casper is in Natrona County. 49 active public water systems serve the county; 32 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Natrona County
24 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Broken Wrench LLC Casper |
30 | 6 | 13.5 mi | |
| Pleasant View Water Company Mills |
130 | 0 | 15.1 mi | |
| Pioneer Water & Sewer District Mills |
1,500 | 3 | 15.2 mi | |
| Lakeview I&s District Mills |
62 | 1 | 15.3 mi | |
| Mile-Hi I&s District |
120 | 0 | 15.6 mi | |
| Mills, City of Mills |
4,050 | 1 | 16.1 mi | |
| Countryside Court Mills |
125 | 4 | 16.3 mi | |
| Vista West Water Company Casper |
1,600 | 1 | 16.4 mi | |
| Casper, City of Casper |
59,000 | 0 | 16.7 mi | |
| Air Base Acres I&s District Mills |
236 | 1 | 17.3 mi | |
| Terrace I MHC Casper |
336 | 1 | 17.8 mi | |
| Hidden Hills MHP Casper |
324 | 0 | 17.8 mi | |
| Terrace II MHC Casper |
320 | 0 | 17.8 mi | |
| Green Valley MHP Casper |
265 | 0 | 17.8 mi | |
| Central WY Regional Water System Jpb Casper |
25 | 0 | 17.8 mi | |
| Natrona County Int'l Airport Casper |
423 | 3 | 18.0 mi | |
| Thirty-Three Mile Road I&s District Mills |
100 | 2 | 19.5 mi | |
| Bar Nunn, Town of Mills |
4,000 | 0 | 19.9 mi | |
| Evansville, Town of Evansville |
2,873 | 1 | 21.3 mi | |
| Sandy Lake Estates I&s District Casper |
450 | 1 | 24.2 mi | |
| South Riverside Acres Wtr Impr Dist Evansville |
125 | 2 | 25.6 mi | |
| Midwest, Town of Midwest |
325 | 0 | 54.3 mi | |
| Edgerton, Town of Edgerton |
195 | 1 | 55.0 mi | |
| Riverside Mobile Home Court Casper |
140 | 2 | 290.5 mi |
Non-community systems in Natrona County (24: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sunset Grill & River View Inn Alcova |
39 | 2 | 1 | |
|
Sloanes General Store Alcova |
90 | 1 | 1 | |
|
Eagle Creek RV Park Alcova |
33 | 1 | 1 | |
|
Alcova Dam RV Park |
30 | 2 | 2 | |
|
Alcova Resort Alcova |
1,165 | 0 | 0 | |
|
Camp Sacajawea Casper |
79 | 2 | 0 | |
|
Hogadon Ski Area Casper |
504 | 1 | 0 | |
|
Mountain Top Baptist Assembly Casper |
150 | 1 | 1 | |
|
Camp Wyoba and Lions Club Casper |
105 | 3 | 1 | |
|
Natrona County Parks-Trails Center Mills |
30 | 2 | 1 | |
|
Alcova Lakeview Estates I Casper |
48 | 1 | 0 | |
|
Alcova Lake Park Trailer Village Mills |
800 | 2 | 0 | |
|
Alcova Lakeview Estates II Casper |
9 | 3 | 0 | |
|
Mills Spring Ranch Casper |
200 | 0 | 0 | |
|
Lord of Lords Lutheran Church Casper |
70 | 0 | 0 | |
|
Blm Lodgepole Campground Casper |
25 | 0 | 0 | |
|
Ekw State Park-Cottonwood Evansville |
25 | 1 | 0 | |
|
Ekw State Park-Platte River RA Evansville |
25 | 1 | 0 | |
|
WY Dot-Independence RA Casper |
350 | 1 | 0 | |
|
Mhvc Visitors Center Alcova |
612 | 0 | 0 | |
|
Mhvc Cherry Creek CG Alcova |
202 | 0 | 0 | |
|
Mhvc Jackson CG Alcova |
50 | 0 | 0 | |
|
Mhvc 66 Ranch Alcova |
96 | 1 | 0 | |
|
WY Trans Dept Waltman RA Powder River |
300 | 1 | 0 |
About this data
Water systems are matched to Natrona County, nearest to Casper first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wyoming records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.