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 still unresolved. What Lead and Copper Rule (LCR) is and why it matters.
Systems with a Lead and Copper Rule (LCR) violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Shelby City of Shelby · Toole County |
3,970 | 1 | 1 | |
|
Poplar, City of County |
3,025 | 5 | 2 | |
|
Dry Prairie Rural Water Authority Culbertson · Roosevelt County |
3,005 | 2 | 0 | |
|
Lehrkinds Big Spring Water Lewistown · Fergus County |
2,575 | 2 | 0 | |
|
Wheat Montana Bakery Bozeman · Broadwater County |
2,453 | 2 | 1 | |
|
Super One Food Store Stevensville · Ravalli County |
1,769 | 1 | 1 | |
|
Boulder City of Boulder · Jefferson County |
1,400 | 2 | 1 | |
|
Wheat Montana at Muralts Travel Plaza Missoula · Missoula County |
1,225 | 2 | 2 | |
|
White Sulphur Springs City of White Sulphur Springs · Meagher County |
1,000 | 4 | 1 | |
|
Meadow Lake CO Water and Sewer District Columbia Falls · Flathead County |
950 | 1 | 0 | |
|
Westview Mobile Home Park Missoula · Missoula County |
947 | 2 | 1 | |
|
Chester Town of Chester · Liberty County |
870 | 1 | 0 | |
|
Darby Town of Darby · Ravalli County |
850 | 1 | 1 | |
|
Harlem City of Harlem · Blaine County |
820 | 5 | 1 | |
|
Shepherd Schools Shepherd · Yellowstone County |
800 | 3 | 1 | |
|
Worden Ballantine Yellowstone Ballantine, Worden · Yellowstone County |
800 | 4 | 2 | |
|
Jefferson Hills Wua Helena · Jefferson County |
780 | 3 | 1 | |
|
Ten Mile and Pleasant Valley Wua Helena · Lewis and Clark County |
750 | 2 | 1 | |
|
Montana State Hospital Complex Warm Springs · Deer Lodge County |
721 | 5 | 1 | |
|
Genesis Business Park Bozeman · Gallatin County |
670 | 2 | 2 | |
|
Blackfeet Community Hospital County |
600 | 3 | 1 | |
|
Elder Grove Middle School Bldg 6 Billings · Yellowstone County |
600 | 2 | 1 | |
|
Joliet Town of Joliet · Carbon County |
600 | 1 | 1 | |
|
Wibaux Town of Wibaux · Wibaux County |
550 | 8 | 0 | |
|
Busby Community Water System County |
535 | 2 | 1 | |
|
Windsor Estates Billings · Yellowstone County |
530 | 2 | 1 | |
|
Peak Health and Wellness Center Missoula · Missoula County |
506 | 2 | 1 | |
|
Missoula KOA & EL Mar Tlr Village Missoula · Missoula County |
499 | 3 | 1 | |
|
Fromberg Town of Fromberg · Carbon County |
498 | 5 | 1 | |
|
Country Estates Water Supply Kalispell · Flathead County |
490 | 1 | 0 | |
|
Lodge Grass Town of Lodge Grass · Big Horn County |
480 | 2 | 1 | |
|
Green Meadow Country Club Helena · Lewis and Clark County |
471 | 1 | 1 | |
|
North Valley County Water and Sewer Dist St Marie · Valley County |
450 | 5 | 2 | |
|
Culligan Water Facility Butte Butte · Silver Bow County |
423 | 2 | 1 | |
|
Meadow Manor Kalispell · Flathead County |
410 | 2 | 0 | |
|
LA Casa Grande Water and Sewer District Helena · Lewis and Clark County |
404 | 1 | 1 | |
|
Jordan Town of Jordan · Garfield County |
364 | 5 | 1 | |
|
Dutton Town of Dutton · Teton County |
338 | 6 | 0 | |
|
Culligan of Missoula Missoula · Missoula County |
320 | 2 | 1 | |
|
Murdochs Ranch Supply Bozeman Bozeman · Gallatin County |
280 | 1 | 0 | |
|
Winifred Town of Winifred · Fergus County |
274 | 7 | 1 | |
|
Alpine Pacific Utilities Kalispell · Flathead County |
270 | 1 | 0 | |
|
Jefferson School District NO 1 Glendive · Dawson County |
270 | 2 | 1 | |
|
Fairfield Mennonite Church Fairfield · Teton County |
260 | 2 | 1 | |
|
Blue Sky Heights Wua Clancy Clancy · Jefferson County |
250 | 4 | 1 | |
|
Heart Butte School County |
250 | 5 | 4 | |
|
Lexley Acres Mobile Home Park Belgrade · Gallatin County |
250 | 2 | 2 | |
|
Hilltop Terrace Subdivision Kalispell · Flathead County |
230 | 1 | 0 | |
|
Pettyjohns the Water Store Kalispell · Flathead County |
225 | 1 | 0 | |
|
Casitas del Rio Glendive · Dawson County |
216 | 4 | 0 |
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. Retrieved from ECHO on Oct 11, 2026.