All water systems in Montana
31 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Valley Water Company Ravalli County |
4,000 | 0 | 0 | |
|
Summit Valley Bottled Water Butte · Silver Bow County |
475 | 0 | 0 | |
|
Dry Prairie Valley County Glasgow · Valley County |
440 | 0 | 0 | |
|
Valley Community Bible Church Great Falls · Cascade County |
325 | 0 | 0 | |
|
Ten Mile-Pleansant Valley Wua Helena · Lewis and Clark County |
170 | 0 | 0 | |
|
Embark at Flathead Valley Marion · Flathead County |
130 | 0 | 0 | |
|
Valley View Estates Health Care Center Hamilton · Ravalli County |
120 | 1 | 1 | |
|
Dane Valley Well Sheridan County |
100 | 0 | 0 | |
|
Valley Water Service Yellowstone County |
100 | 0 | 0 | |
|
Grace Chapel of the Valley Sanders County |
77 | 0 | 0 | |
|
Golden Valley Colony Golden Valley County |
75 | 0 | 0 | |
|
Swan Valley Centre Cafe Missoula County |
75 | 0 | 0 | |
|
North Valley Professional Center Whitefish · Flathead County |
66 | 0 | 0 | |
|
Smith Valley School Upper Kalispell · Flathead County |
53 | 0 | 0 | |
|
19th Hole at Valley View Gallatin County |
50 | 0 | 0 | |
|
Central Valley Market Park County |
50 | 0 | 0 | |
|
Golden Valley Colony Golden Valley County |
50 | 0 | 0 | |
|
Valley Creek Saloon Stillwater County |
50 | 0 | 0 | |
|
Valley Drive Mobile Home Park Miles City · Custer County |
50 | 0 | 0 | |
|
Happy Valley Water Flathead County |
32 | 0 | 0 | |
|
Swan Valley Cafe Condon · Missoula County |
27 | 0 | 0 | |
|
Gallatin Valley Food Bank Gallatin County |
25 | 0 | 0 | |
|
Grass Valley Trailer Court Missoula County |
25 | 0 | 0 | |
|
Valley Truck Stop Cascade County |
25 | 0 | 0 | |
|
Valley View Iga Sidney · Richland County |
25 | 0 | 0 | |
|
Valley Trailer Court Ravalli County |
20 | 0 | 0 | |
|
Pleasant Valley School Flathead County |
13 | 0 | 0 | |
|
Mission Valley Trailer Court and Camping Lake County |
12 | 0 | 0 | |
|
Swan Valley School Lake County |
11 | 0 | 0 | |
|
Valley View School Lake County |
6 | 0 | 0 | |
|
Valley Homes Addition Frenchtown · Missoula County |
0 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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 Montana 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.