Lead and Copper Rule (LCR) violations in Montana
122 active public water systems in Montana had a Lead and Copper Rule (LCR) violation in the past three years, 122 of them in the latest quarter of EPA's data. What Lead and Copper Rule (LCR) is and why it matters.
Health effects: Lead: no safe level for children. Causes irreversible neurological damage, impaired cognitive development, behavioral problems, and reduced IQ in children under 6. In adults: hypertension, cardiovascular disease, kidney damage. Copper: acute gastrointestinal distress at high levels; liver/kidney damage at very high chronic levels.
Systems with a Lead and Copper Rule (LCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Belfry Carbon CO Water and Sewer Dist Belfry · Carbon County |
205 | 1 | 1 | |
|
Curious Minds Montessori Preschool Stevensville · Ravalli County |
205 | 4 | 1 | |
|
Basin County Water and Sewer Dist Basin · Jefferson County |
200 | 2 | 1 | |
|
Big Valley Water INC Glasgow · Valley County |
200 | 2 | 1 | |
|
Four Corners Business Park Bozeman · Gallatin County |
200 | 1 | 1 | |
|
Cskt Division of Fire Management County |
190 | 7 | 1 | |
|
Winnett Town of Winnett · Petroleum County |
187 | 8 | 1 | |
|
Moore Town of Moore · Fergus County |
186 | 2 | 1 | |
|
Victor Middle School and High School Victor · Ravalli County |
185 | 1 | 1 | |
|
Sand Coulee Water Users District Sand Coulee · Cascade County |
180 | 3 | 2 | |
|
Simms High School Simms · Cascade County |
180 | 3 | 0 | |
|
Melstone Town of Melstone · Musselshell County |
170 | 1 | 1 | |
|
Spring Meadows County Water District Missoula · Missoula County |
162 | 1 | 1 | |
|
ST Charles School Pryor · Big Horn County |
152 | 1 | 1 | |
|
Hobson School Hobson · Judith Basin County |
150 | 1 | 0 | |
|
Martinsdale Colony Martinsdale · Wheatland County |
150 | 2 | 1 | |
|
C & C Community INC Billings · Yellowstone County |
145 | 2 | 1 | |
|
Fort Kipp Subdivision Water System County |
130 | 2 | 1 | |
|
Whitewater School Dist 20aa D Whitewater · Phillips County |
125 | 1 | 1 | |
|
Dodson Town of Dodson · Phillips County |
120 | 5 | 1 | |
|
Holbrook Estates Kalispell · Flathead County |
120 | 1 | 1 | |
|
Triple Creek Ranch Darby · Ravalli County |
120 | 1 | 1 | |
|
Wettington Water District INC Kalispell · Flathead County |
119 | 4 | 1 | |
|
Northwest Water Treatment CO Bozeman · Gallatin County |
118 | 2 | 1 | |
|
Bynum Teton CO W & S District Bynum · Teton County |
100 | 3 | 1 | |
|
Custer School Dist NO 15 Custer · Yellowstone County |
100 | 1 | 1 | |
|
Gallatin Village Mob HM Park Bozeman · Gallatin County |
100 | 3 | 2 | |
|
Riverside Mobile Home Park Columbia Falls · Flathead County |
100 | 2 | 2 | |
|
Sweetgrass Water Users Assn Sweetgrass · Toole County |
100 | 3 | 1 | |
|
Tri Hil Wua Gore Hill Great Falls · Cascade County |
100 | 3 | 1 | |
|
Camrose Colony Ledger · Toole County |
95 | 3 | 0 | |
|
Paradise Pines Polson · Lake County |
95 | 2 | 0 | |
|
Piegan Border Station Babb · Glacier County |
94 | 3 | 0 | |
|
Nine Mile CO Water and Sewer District Toole County |
90 | 1 | 0 | |
|
Solid Rock Ventures LLC Kalispell · Flathead County |
90 | 2 | 0 | |
|
Elkhorn Health and Rehabilitation LLC Clancy · Jefferson County |
89 | 3 | 0 | |
|
Lithia Ford of Missoula Missoula · Missoula County |
87 | 1 | 1 | |
|
Springdale Hutterite Colony White Sulphur Springs · Meagher County |
87 | 3 | 0 | |
|
Augusta School Dist 45 Augusta · Lewis and Clark County |
86 | 1 | 1 | |
|
Christ Church of Great Falls Great Falls · Cascade County |
85 | 1 | 1 | |
|
Fallon County Water District Baker · Fallon County |
85 | 1 | 1 | |
|
Marketing Concepts INC Glendive · Dawson County |
85 | 1 | 0 | |
|
Elk Creek Colony Augusta · Lewis and Clark County |
84 | 2 | 0 | |
|
Rau School District NO 21 Sidney · Richland County |
80 | 3 | 2 | |
|
South Chouteau County Water Dist Highwood · Chouteau County |
80 | 5 | 3 | |
|
Spring Tree Ridge Great Falls · Cascade County |
80 | 4 | 2 | |
|
Big Pines Trailer Court Missoula · Missoula County |
78 | 2 | 0 | |
|
Devon Water INC Shelby · Toole County |
75 | 2 | 2 | |
|
Montana Trailer Court Missoula · Missoula County |
73 | 1 | 0 | |
|
Rapelje Water District Rapelje · Stillwater County |
70 | 2 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Lead and Copper Rule (LCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Lead and Copper Rule (LCR) 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 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.