Home › Montana › Worst ViolationsMontana: Water Systems with Most Health Violations
609 water systems in Montana have at least one health-based violation on record. The system with the most health-based violations is Denton Town of in Denton with 155 health-based violations. Health-based violations mean a system exceeded an EPA maximum contaminant level or failed required treatment standards.
Water System City Population Health Violations Total Violations
Denton Town of Denton 255
155 166
Fort Belknap Agency Water System Harlem 2,100
125 143
Whitehall Town of Whitehall 1,500
87 101
Harlem City of Harlem 820
68 131
Beaverhead Jackson Water and Sewer Dist Jackson 58
62 146
St Labre Indian School Ashland 650
59 207
Crow Agency Water System Crow Agency 1,300
36 208
King Ranch Colony Lewistown 56
36 106
E Bar L Ranch Greenough 84
32 40
Eagle Mount Bozeman 161
30 114
Ncmrwa Tiber Service Area Helena 200
29 37
Blue Cloud Subdivision Helena 60
26 41
Clarks Lookout Dillon 62
26 38
Richland Co Valley View Wua Sidney 85
25 57
Philipsburg Town of Philipsburg 1,360
25 34
Arrow Creek Trailer Court Fort Smith 75
21 133
Blue Sky Heights Wua Clancy Clancy 250
20 46
Turner Colony Turner 50
20 45
Riverview Colony Chester 130
20 25
Hysham Town of Hysham 262
19 114
Bee Hive Homes Msla Missoula 106
19 97
Kid Corral Day Care Shepherd 60
18 97
Cinnamon Lodge and Adventures Gallatin Gateway 40
17 66
Tiber County Water District Brady 750
17 55
Hoving Business Center Helena 170
16 300
Pops Inn Billings 50
15 39
Crystal Springs Water System Billings 225
15 33
Elder Grove Middle School Bldg 6 Billings 600
14 17
Palisades Apartments Miles City 50
13 20
Libby City of Libby 4,892
12 60
Kampfire Steakhouse Missoula 57
12 38
Alhambra RV Park Clancy 27
12 35
Elk Creek Colony Augusta 84
12 32
Wild Coyote Saloon Thompson Falls 31
12 30
Centerville School Sand Coulee 292
12 26
Helena Water System Helena 32,091
12 18
Oilmont County Water District Sunburst 300
11 142
Pinnacle Estates of Glendive Glendive 50
11 55
Tamarack Court Missoula 75
11 31
Pine Butte Choteau 35
11 31
Birney Village Lame Deer 96
11 30
Greycliff Rest Area Eastbound Billings 2,500
11 25
Lewis and Clark Campground Dillon 90
11 18
Dayton Harbor Cottages Missoula 25
11 16
Fort Harrison Military Complex Fort Harrison 580
11 11
Milford Colony Inc Wolf Creek 67
10 220
Templed Hills Baptist Camp Billlings 40
10 53
Havre City of Havre 9,921
10 28
New Life Church Billings 250
10 28
Miles City City of Miles City 9,565
10 18
Fishermans Village Subdivision West Yellowstone 25
9 327
Elkhorn Ranch Gallatin Gateway 65
9 103
Worden Ballantine Yellowstone Fort Smith 800
9 30
Lubrecht Experimental Forest Greenough 121
9 19
Fin's Tap House Corvallis 35
8 86
H Bar J Saloon and Cafe Wise River 75
8 75
Kips Beer Garden Babb 211
8 51
Ryegate Town of Ryegate 270
8 37
Twin Hills Colony Inc Carter 78
8 37
Broadus Rest Area Miles City 255
8 19
Park City School K 12 Park City 300
8 10
Heart Butte School Heart Butte 250
7 132
South Wind Water and Sewer District Great Falls 200
7 79
Flaxville Town of Flaxville 82
7 52
Green Valley Campground Glendive 27
7 41
Virginia City Water Dept Virginia City 1,500
7 38
Maverick Mountain Resort LLC Polaris 340
7 33
Lame Deer High School Lame Deer 260
7 32
Living Hope Fellowship Helena 46
7 32
Pablo Lake County Water and Sewer Dist Pablo 2,175
7 21
Greycliff Rest Area Westbound Billings 1,000
7 17
Sunset Camping LLC Plentywood 42
7 13
Last Chance Chapel Helena 313
7 12
Lakeview Suites West Yellowstone 38
7 12
Chinook City of Chinook 1,300
7 7
Peak Health and Wellness Center Missoula 506
6 55
Summit Mountain Lodge East Glacier Park 42
6 54
Lame Deer Water System Lame Deer 2,605
6 53
Mt Ellis Academy Bozeman 106
6 46
Billings Peterbilt Billings 60
6 41
Duck Creek Mobile Home Park Billings 70
6 40
Quick Stop Drive in Joliet 100
6 34
Highlander Bar and Grill Helena 104
6 32
Vacationland Campground Bozeman 725
6 31
Colstrip City of Colstrip 2,350
6 28
Moab Under Canvas LLC Belgrade 173
6 24
Northern Lights Saloon Whitefish 50
6 24
Devils Elbow Rec Site Helena 501
6 20
Warren School District No 1 Helena 350
6 19
Yellowstone Drag Strip Acton 200
6 19
Rexford Bench Campground Eureka 50
6 18
Clark's Bay Rec Site Helena 250
6 17
Thriftway Super Stop #8 Bozeman Butte 817
6 12
Moose Crossing Inc Marion 84
6 10
Fort Peck Rural County Water District Ft. Peck 663
6 6
Cozy Northern Homes, LLC Livingston 156
5 202
Camp Child Helena 72
5 64
Box R Bar Unapproved Pendroy 25
5 39
Busby Community Water System Lame Deer 535
5 37
Triple G's Resort Essex 77
5 30