E. coli (Escherichia coli) violations in Wyoming
27 active public water systems in Wyoming had a E. coli (Escherichia coli) violation in the past three years, 27 of them in the latest quarter of EPA's data. What E. coli (Escherichia coli) is and why it matters.
Systems with a E. coli (Escherichia coli) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
K Bar Z Guest Ranch Cody · Park County |
847 | 2 | 1 | |
|
Cowley, Town of Cowley · Big Horn County |
800 | 2 | 1 | |
|
Broken Wheel Truck Stop Douglas · Converse County |
540 | 6 | 2 | |
|
Grand Teton Park RV Resort Moran Jct · Teton County |
502 | 3 | 1 | |
|
Trailshead Lodge Laramie · Albany County |
250 | 2 | 0 | |
|
Aladdin, Town of Crook County |
211 | 3 | 1 | |
|
Akal Travel Center Laramie · Albany County |
202 | 2 | 1 | |
|
Osage Water District Osage · Weston County |
200 | 2 | 1 | |
|
Lds Larmie WY Stake Rec Camp/batel Ranch Laramie · Albany County |
150 | 3 | 1 | |
|
Camp Wyoba and Lions Club Casper · Natrona County |
105 | 3 | 1 | |
|
Deer Haven Mobile Home Park Saratoga · Carbon County |
98 | 1 | 1 | |
|
Sloanes General Store Alcova · Natrona County |
90 | 1 | 1 | |
|
Platte River Campground Glenrock · Converse County |
78 | 2 | 1 | |
|
Absaroka Mountain Lodge Wapiti · Park County |
67 | 1 | 1 | |
|
Elkhorn Lodge, LLC Bondurant · Sublette County |
66 | 2 | 1 | |
|
Iron Horse Skateway Gillette · Campbell County |
55 | 2 | 1 | |
|
Glendo ST Park Whiskey Gulch Glendo · Platte County |
50 | 1 | 1 | |
|
Akal Energy/tumbleweed Express Laramie · Albany County |
49 | 3 | 2 | |
|
Akal Energy-Buford Outpost Albany County |
44 | 3 | 2 | |
|
Jeffrey City Water & Sewer District Riverton · Fremont County |
40 | 4 | 2 | |
|
Parkman Bar Parkman · Sheridan County |
40 | 2 | 1 | |
|
Sunset Grill & River View Inn Alcova · Natrona County |
39 | 2 | 1 | |
|
Eagle Creek RV Park Alcova · Natrona County |
33 | 1 | 1 | |
|
Kinnear Store Kinnear · Fremont County |
31 | 2 | 1 | |
|
Natrona County Parks-Trails Center Mills · Natrona County |
30 | 2 | 1 | |
|
Eden Saloon Eden · Sweetwater County |
29 | 3 | 1 | |
|
Crossed Sabres Guest Ranch Wapiti · Park County |
25 | 1 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved E. coli (Escherichia coli), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not E. coli (Escherichia coli) 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.