Chlorine (MRDL) violations in Wyoming
22 active public water systems in Wyoming had a Chlorine (MRDL) violation in the past three years. What Chlorine (MRDL) is and why it matters.
Systems with a Chlorine (MRDL) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Gillette, City of Gillette · Campbell County |
32,222 | 1 | 0 | |
|
Alpine, Town of Alpine · Lincoln County |
1,300 | 1 | 0 | |
|
Basin, Town of Basin · Big Horn County |
1,250 | 1 | 0 | |
|
Pine Bluffs, Town of Pine Bluffs · Laramie County |
1,186 | 2 | 0 | |
|
Bedford Water & Sewer District Bedford · Lincoln County |
750 | 2 | 0 | |
|
Shoshoni, Town of Shoshoni · Fremont County |
515 | 1 | 0 | |
|
Rolling Hills, Town of Rolling Hills · Converse County |
450 | 3 | 0 | |
|
Sapp Brothers Truck Stop Cheyenne · Laramie County |
400 | 3 | 1 | |
|
Eagle Special. Mats, Llc-Rawhide School Gillette · Campbell County |
295 | 1 | 0 | |
|
Fort Laramie, Town of Fort Laramie · Goshen County |
230 | 1 | 0 | |
|
Osage Water District Osage · Weston County |
200 | 2 | 1 | |
|
Jackson Hole Classical Academy Jackson · Teton County |
150 | 3 | 0 | |
|
North Gurley Mobile Home Park Campbell County |
128 | 3 | 0 | |
|
Manderson, Town of Manderson · Big Horn County |
110 | 2 | 0 | |
|
Alpine Science Institute Lander · Fremont County |
85 | 3 | 1 | |
|
Kirby, Town of Kirby · Hot Springs County |
70 | 1 | 0 | |
|
Old West Cabins Jackson · Teton County |
70 | 1 | 0 | |
|
Bairoil, Town of Bairoil · Sweetwater County |
60 | 3 | 1 | |
|
Kennington Springs Pipeline Fairview · Lincoln County |
45 | 4 | 2 | |
|
J-W Subdivision Association Jackson · Teton County |
40 | 1 | 0 | |
|
Jeffrey City Water & Sewer District Riverton · Fremont County |
40 | 4 | 2 | |
|
Evergreen Mobile Home Park Cheyenne · Laramie County |
35 | 10 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) alone.
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.