Fluoride violations in Montana
25 active public water systems in Montana had a Fluoride violation in the past three years, 1 of them in the latest quarter of EPA's data. What Fluoride is and why it matters.
Systems with a Fluoride violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
White Sulphur Springs City of White Sulphur Springs · Meagher County |
1,000 | 4 | 1 | |
|
Circle Town of Circle · McCone County |
644 | 3 | 0 | |
|
Frenchtown High School Frenchtown · Missoula County |
550 | 5 | 0 | |
|
Box Elder School District 13g Box Elder · Hill County |
500 | 7 | 0 | |
|
Ashland Water and Sewer District Ashland · Rosebud County |
400 | 5 | 0 | |
|
Paws UP Angus Ranch Main Complex Greenough · Missoula County |
327 | 3 | 0 | |
|
Wyola Water System County |
281 | 10 | 1 | |
|
Anderson School Bozeman · Gallatin County |
220 | 7 | 1 | |
|
Cskt Division of Fire Management County |
190 | 7 | 1 | |
|
Winnett Town of Winnett · Petroleum County |
187 | 8 | 1 | |
|
Cherry Creek Wua Glasgow Glasgow · Valley County |
180 | 5 | 0 | |
|
Lambert Sewer and Water Assn Lambert · Richland County |
150 | 4 | 0 | |
|
Bitterroot Gateway MB PK Lolo Lolo · Missoula County |
130 | 6 | 0 | |
|
Country Haven Estates Whispering Pines Columbus · Stillwater County |
100 | 4 | 0 | |
|
Tri Hil Wua Gore Hill Great Falls · Cascade County |
100 | 3 | 1 | |
|
Greenfield Elem School Dist 75 Fairfield · Teton County |
90 | 5 | 0 | |
|
Swlo and Main Office Missoula · Missoula County |
75 | 7 | 0 | |
|
Hartland Colony Havre · Blaine County |
73 | 5 | 1 | |
|
Barnett Water Users System Helena · Lewis and Clark County |
70 | 6 | 0 | |
|
Montessori Island School Livingston · Park County |
64 | 1 | 0 | |
|
Water Resources Division Missoula · Missoula County |
60 | 8 | 1 | |
|
Houle Villa Water System County |
50 | 2 | 0 | |
|
Palisades Apartments Miles City · Custer County |
50 | 3 | 0 | |
|
Bolin Elementary School Dist 5 Terry · Prairie County |
45 | 5 | 0 | |
|
Fishermans Village Subdivision West Yellowstone · Gallatin County |
25 | 9 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Fluoride, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Fluoride 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.