All water systems in Montana
86 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Georgetown Lake Lodge Anaconda · Granite County |
302 | 0 | 0 | |
|
Lake Blaine Resort Flathead County |
250 | 0 | 0 | |
|
Troutbeck Rise Lakeside Est Water System Lakeside · Flathead County |
250 | 0 | 0 | |
|
Jette Meadows Lake CO W&s Dist Phase II Polson · Lake County |
200 | 0 | 0 | |
|
Park Lake Campground Helena · Jefferson County |
200 | 1 | 0 | |
|
Salmon Lake State Park Day Use Missoula · Missoula County |
152 | 0 | 0 | |
|
Holland Lake Campground Flathead County |
150 | 0 | 0 | |
|
Lakeside School Flathead County |
150 | 0 | 0 | |
|
Lakeside Yacc Camp Flathead County |
150 | 0 | 0 | |
|
Flat Lake Work Camp Sheridan County |
116 | 0 | 0 | |
|
Seeley Lake CG Lake Intake Missoula County |
110 | 0 | 0 | |
|
Ac, LLC Bigfork - Lake Co · Flathead County |
106 | 0 | 0 | |
|
Lakeside School Flathead County |
105 | 0 | 0 | |
|
Holland Lake Lodge INC Condon · Missoula County |
102 | 1 | 0 | |
|
Holter Lake Lodge Wolf Creek · Lewis and Clark County |
101 | 0 | 0 | |
|
Montana Fish & Game-Daily Lake Lewis and Clark County |
100 | 0 | 0 | |
|
Flathead Lake Vacation Trlr CT Lake County |
88 | 0 | 0 | |
|
Glacier Presbytery Camp Lakeside · Lake County |
70 | 0 | 0 | |
|
Delmoe Lake Picnic Ground Silver Bow County |
60 | 0 | 0 | |
|
Lake Blaine Bible Camp Bigfork Flathead County |
60 | 0 | 0 | |
|
Deer Lick Resort Swan Lake · Lake County |
59 | 0 | 0 | |
|
Medicine Lake Nwr Medicine Lake · Sheridan County |
57 | 1 | 0 | |
|
Howard Lake Campground Libby · Lincoln County |
55 | 0 | 0 | |
|
Swan Bar and Grill Swan Lake · Lake County |
52 | 1 | 0 | |
|
3 Lakes Community Bible Church Lincoln County |
50 | 0 | 0 | |
|
East Rosebud Lake Campground Red Lodge · Carbon County |
50 | 0 | 0 | |
|
Flathead Lake Lookout Flathead County |
50 | 0 | 0 | |
|
Gibson Lake Lodge Teton County |
50 | 0 | 0 | |
|
Lake Upsata Ranch Powell County |
50 | 0 | 0 | |
|
Swan Lake Resort Lake County |
50 | 0 | 0 | |
|
Orchard Hills Mobile Home Park Bigfork - Lake Co · Lake County |
47 | 0 | 0 | |
|
Crystal Lake CG and Guard Station Lewistown · Fergus County |
40 | 0 | 0 | |
|
Echo Lake Cafe Flathead County |
40 | 0 | 0 | |
|
Swan Lake Resort Lake County |
35 | 0 | 0 | |
|
Dickey Lake Picnic South Fortine · Lincoln County |
33 | 0 | 0 | |
|
Cherry Hill Yacht Club Condos Lakeside · Flathead County |
30 | 0 | 0 | |
|
Emerald Lake CG N Well NO 2 Yellowstone County |
30 | 0 | 0 | |
|
Gibson Lake Lodge Lewis and Clark County |
30 | 0 | 0 | |
|
Hebgen Lake Lodge Motel & RV Gallatin County |
30 | 0 | 0 | |
|
Hebgen Lake Ranger Station Gallatin County |
30 | 0 | 0 | |
|
Lainey's Lakeview Madison County |
30 | 0 | 0 | |
|
Lakeridge Motel and RV Park Glasgow · Valley County |
30 | 0 | 0 | |
|
Woodlake Campground Cascade County |
30 | 0 | 0 | |
|
Lakeside Trailer Court County |
28 | 0 | 0 | |
|
Swan Lake School Lake County |
27 | 0 | 0 | |
|
406ice--Seeley Lake Seeley Lake · Missoula County |
25 | 0 | 0 | |
|
Ackley Lake Sra Judith Basin County |
25 | 0 | 0 | |
|
Ackley Lake Sra Westside NO 2 Hobson · Judith Basin County |
25 | 0 | 0 | |
|
Ackley Lake Sra Eastside #1 Judith Basin County |
25 | 0 | 0 | |
|
Ashley Lake Recr Area Flathead County |
25 | 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.