Wyoming
Crook County drinking water quality
27 active public water systems serve 9,003 people in Crook County. 14 are compliant, 13 had at least one EPA violation in the past three years, 0 are designated serious violators, and 2 carry a health flag.
Needs attention
Community water systems
7 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sundance, City of Sundance |
1,279 | 0 | 0 | |
|
Moorcroft, Town of Moorcroft |
1,009 | 1 | 0 | |
|
Pine Haven, Town of Pine Haven |
498 | 0 | 0 | |
|
Hulett, Town of Hulett |
420 | 0 | 0 | |
|
Vista West Improvement & Serv District Sundance |
120 | 0 | 0 | |
|
Beulah Land Water Beulah |
50 | 4 | 2 | |
|
Buckmiller Enterprises, LLC Moorcroft |
33 | 0 | 0 |
Non-community systems (20: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Devils Tower National Monument Devils Tower |
3,071 | 1 | 0 | |
|
Devils Tower Koa-Campstool Devils Tower |
516 | 2 | 0 | |
|
State Line Station Beulah |
305 | 1 | 0 | |
|
Devil's Tower Trading Post Devils Tower |
215 | 0 | 0 | |
|
Aladdin, Town of |
211 | 3 | 1 | |
|
Bentonite Performance Minerals Colony Colony |
180 | 0 | 0 | |
|
Black Hills Nf-Cook Lake CG Sundance |
165 | 1 | 1 | |
|
Sand Creek Trading Post Beulah |
110 | 3 | 0 | |
|
Keyhole ST Park Cottonwood CG Moorcroft |
100 | 1 | 0 | |
|
Keyhole ST Park Headquarters Moorcroft |
100 | 1 | 0 | |
|
Beulah Campground Beulah |
99 | 0 | 0 | |
|
Devils Tower Forest Products Hulett |
90 | 0 | 0 | |
|
Vore Buffalo Jump Foundation Sundance |
85 | 0 | 0 | |
|
WY Trans Dept Aladdin Welcome Ctr Sundance |
75 | 1 | 0 | |
|
American Colloid-Colony West Colony |
60 | 0 | 0 | |
|
Keyhole Resort/marina Moorcroft |
50 | 0 | 0 | |
|
American Colloid-Colony East Colony |
45 | 0 | 0 | |
|
Devils Tower View Hulett |
43 | 2 | 0 | |
|
Ranch a Beulah |
40 | 0 | 0 | |
|
Devils Tower Gulch Devils Tower |
34 | 1 | 0 |
Inactive systems (10, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.