Wyoming
Natrona County drinking water quality
49 active public water systems serve 81,991 people in Natrona County. 17 are compliant, 32 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
25 systems, largest firstNon-community systems (24: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Alcova Resort Alcova |
1,165 | 0 | 0 | |
|
Alcova Lake Park Trailer Village Mills |
800 | 2 | 0 | |
|
Mhvc Visitors Center Alcova |
612 | 0 | 0 | |
|
Hogadon Ski Area Casper |
504 | 1 | 0 | |
|
WY Dot-Independence RA Casper |
350 | 1 | 0 | |
|
WY Trans Dept Waltman RA Powder River |
300 | 1 | 0 | |
|
Mhvc Cherry Creek CG Alcova |
202 | 0 | 0 | |
|
Mills Spring Ranch Casper |
200 | 0 | 0 | |
|
Mountain Top Baptist Assembly Casper |
150 | 1 | 1 | |
|
Camp Wyoba and Lions Club Casper |
105 | 3 | 1 | |
|
Mhvc 66 Ranch Alcova |
96 | 1 | 0 | |
|
Sloanes General Store Alcova |
90 | 1 | 1 | |
|
Camp Sacajawea Casper |
79 | 2 | 0 | |
|
Lord of Lords Lutheran Church Casper |
70 | 0 | 0 | |
|
Mhvc Jackson CG Alcova |
50 | 0 | 0 | |
|
Alcova Lakeview Estates I Casper |
48 | 1 | 0 | |
|
Sunset Grill & River View Inn Alcova |
39 | 2 | 1 | |
|
Eagle Creek RV Park Alcova |
33 | 1 | 1 | |
|
Alcova Dam RV Park |
30 | 2 | 2 | |
|
Natrona County Parks-Trails Center Mills |
30 | 2 | 1 | |
|
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 | |
|
Alcova Lakeview Estates II Casper |
9 | 3 | 0 |
Inactive systems (12, 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.