U.S. Water Systems with High F Levels
Database of drinking water systems with high levels of naturally occurring fluoride; searchable by state.
Database of drinking water systems with high levels of naturally occurring fluoride; searchable by state.
Unless otherwise noted, the following information comes from the Fluoridation Census 1992 published by the Centers for Disease Control and Prevention, Division of Oral Health, in 1993.
• It is not known if the water systems listed below are all still active
• The state Water System ID is the same as EPA’s preceded with the state’s initial. For example, Montana would be MT0000000
State |
Water Systems |
County |
EPA ID No. |
Population |
Natural Level of Fluoride (ppm) |
A Milligram per Liter (mg/L) is the same as Part Per Million (ppm) Not all water fluoride levels are included in the Fluoridation Census 1992 |
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0.1 – 0.9 ppm |
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Montana | Clarice Paul | Lake | 3090021 | 68 | 0.1 |
Montana | Pache | Lake | 3090036 | 283 | 0.1 |
Montana | Schley | Missoula | 3090030 | 132 | 0.1 |
Montana | St. Ignatius (South Side) | Lake | 3090031 | 615 | 0.1 |
Montana | Turtle Lake | Lake | 3090032 | 258 | 0.1 |
Montana | Woodcock | Lake | 3090033 | 140 | 0.1 |
Montana | Evaro | Missoula | 3090025 | 86 | 0.2 |
Montana | Mission Dam | Lake | 3090029 | 98 | 0.2 |
Montana | Blackfoot | Glacier | 3090002 | 76 | 0.3 |
Montana | Jenny Gray | Blaine | 3090042 | 27 | 0.3 |
Montana | Dayton | Lake | 3090022 | 28 | 0.4 |
Montana | Aldrich Springs | Teton | 0000968 | 92 | 0.7 |
Montana | Fromberg | Park | 0000038 | 75 | 0.7 |
Montana | Montana Aviation Research | Valley | 0000416 | 100 | 0.7 |
Montana | — N, Valley Co WS Dist | Valley | 0003595 | 255 | 0.7 |
Montana | Montana Silver Springs | Granite | 003509 | 25 | 0.7 |
Montana | North Forestvale Homeowners | Lewis & Clark | 0001793 | 100 | 0.7 |
Montana | Saddle Mounain Corp. | Jefferson | 0000057 | 163 | 0.7 |
Montana | Wagon Wheel CT | Lewis & Clark | 0002915 | 25 | 0.7 |
Montana | Cascade | Cascade | 0000171 | 729 | 0.8 |
Montana | Duck Creek TC Well #! | Yellowstone | 0001786 | 35 | 0.8 |
Montana | Fort Peck | Valley | 0000218 | 325 | 0.8 |
Montana | Four Corners MHP | Gallatin | 0000798 | 100 | 0.8 |
Montana | Glasgow | Valley | 0000415 | 3,572 | 0.8 |
Montana | Glasgow Water Conditioning | Valley | 0003401 | 4,500 | 0.8 |
Montana | Highland MHP | Dawson | 0000408 | 5 | 0.8 |
Montana | Hilltop Estates | Richland | 0000389 | 125 | 0.8 |
Montana | Jordon | Garfield | 0000257 | 494 | 0.8 |
Montana | Lame Deer | Rosebud | 3090064 | 2,350 | 0.8 |
Montana | Loma Co. Water District | Chouteau | 0002669 | 400 | 0.8 |
Montana | Missouri Yellowstone Water Co. | Richland | 0002583 | 110 | 0.8 |
Montana | Nashua | Valley | 0000297 | 375 | 0.8 |
Montana | North Harlem Colony | Blaine | 0001771 | 36 | 0.8 |
Montana | Park Garden Estates | Cascade | 0000050 | 50 | 0.8 |
Montana | Yelowtail Dam MK Upper | Big Horn | 0002531 | 30 | 0.8 |
Montana | Bitterroot TC | Hill | 0003404 | 40 | 0.9 |
Montana | Clyde Park | Park | 0000178 | 282 | 0.9 |
Montana | Country Lanes TC | Cascade | 0000028 | 52 | 0.9 |
Montana | East Malta Colony | Phillips | 0001769 | 35 | 0.9 |
Montana | Hilbrook Nursing Home | Jefferson | 0000618 | 67 | 0.9 |
Montana | Miller Colony | Teton | 0001649 | 101 | 0.9 |
Montana | Muddy Cluster | Big Horn | 3090065 | 210 | 0.9 |
Montana | Outlook Co.WS | Sheridan | 0003312 | 81 | 0.9 |
Montana | Plevna | Fallon | 0000307 | 140 | 0.9 |
Montana | Ponerosa TP | Ravalli | 0002131 | 52 | 0.9 |
Montana | Vaughn Cascade Co WS | Cascade | 0000352 | 500 | 0.9 |
Montana | Warm Springs Hospital | Deer Lodge | 0000354 | 354 | 0.9 |
Montana | Wells Garden Estates | Yellowstone | 0002927 | 240 | 0.9 |
1.0 – 1.4 ppm |
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Montana | Birney | Rosebud | 3090062 | 112 | 1.0 |
Montana | Blue Sky Heights WU | Jefferson | 0000030 | 300 | 1.0 |
Montana | Broadview | Yellowstone | 0000167 | 133 | 1.0 |
Montana | Carter | Chouteau | 0000520 | 170 | 1.0 |
Montana | Dixon Old Agency | Sanders | 3090023 | 119 | 1.0 |
Montana | Ennis | Madison | 0000208 | 773 | 1.0 |
Montana | Morony Dam Mt. Power | Cascade | 0000744 | 33 | 1.0 |
Montana | Power-Teton Co WD | Teton | 0000311 | 150 | 1.0 |
Montana | Radas TC | Cascade | 0000049 | 25 | 1.0 |
Montana | Rivershore MHP | Cascade | 0000414 | 100 | 1.0 |
Montana | Sun Praire Water District | Cascade | 0000571 | 314 | 1.0 |
Montana | Trailer Terrace | Cascade | 0000025 | 350 | 1.0 |
Montana | Trident (Ideal Cement Co) | Gallatin | 0000346 | 40 | 1.0 |
Montana | Birch Creek Colony | Pondera | 0001781 | 130 | 1.1 |
Montana | Bitterroot Meadows | Missoula | 003146 | 100 | 1.1 |
Montana | Great Falls | Cascade | 0000525 | 55,097 | 1.1 |
Montana | –Black Eagle | Cascade | 0000157 | 1,400 | 1.1 |
Montana | –Culligan Water Great Falls | Cascade | 0002630 | 25 | 1.1 |
Montana | –M&K Water Service | Cascade | 0003551 | 100 | 1.1 |
Montana |
–Malmstrom AFB | Cascade | 0000515 | 5,938 | 1.1 |
Montana | –Praire Water Co. | Cascade | 0003539 | 350 | 1.1 |
Montana | Harlowton | Wheatland | 0000240 | 1,049 | 1.1 |
Montana | Sand-Coulee WUA | Cascade | 0000325 | 300 | 1.1 |
Montana | Spring Creek Colony | Fergus | 0000043 | 36 | 1.2 |
Montana | Hillcrest TC | Dawson | 0000409 | 60 | 1.3 |
Montana | Ashland Housing | Rosebud | 3090061 | 136 | 1.4 |
Montana | Homestead Acres | Cascade | 0000526 | 300 | 1.4 |
Montana | Sunburst | Mineral | 0000338 | 437 | 1.4 |
Montana | Thiels West TP | Hill | 002685 | 25 | 1.4 |
Montana | White Cow Canyon | Blaine | 3090044 | 185 | 1.4 |
Montana | –Mays | Blaine | 3090100 | 164 | 1.4 |
1.5 – 7.3 ppm |
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Montana | Frontier TC | Park | 0000038 | 75 | 1.5 |
Montana | Hot Springs | Sanders | 3000251 | 411 | 1.5 |
Montana | Rockport Colony | Teton | 0001778 | 105 | 1.5 |
Montana | Winifred | Fergus | 0000363 | 150 | 1.5 |
Montana | Duncan Colony | Wheatland | 0000418 | 70 | 1.6 |
Montana | Missouri Meadows TC | Cascade | 0000053 | 100 | 1.6 |
Montana | Milford Colony | Lewis & Clark | 0001646 | 100 | 1.8 |
Montana | Ingomar Water District | Rosebud | 0003078 | 20 | 1.9 |
Montana | Opheim | Valley | 0000301 | 145 | 1.9 |
Montana | Wibaux | Wibaux | 0000361 | 628 | 1.9 |
Montana | Windy Acres WU | Cascade | 0002806 | 70 | 1.9 |
Montana | Ayers Hutterite Colony | Fergus | 0000413 | 60 | 2.0 |
Montana | Pine Hills School | Custer | 0000292 | 250 | 2.0 |
Montana | Winnett | Petroleum | 0000364 | 188 | 2.1 |
Montana | Gore Hill Co Water Dist | Cascade | 0000232 | 400 | 2.2 |
Montana | Custer Co Nursing Home | Custer | 0000140 | 160 | 2.3 |
Montana | Forest Park WUA | Jefferson | 0000591 | 235 | 2.3 |
Montana | Fairview | Richland | 0000213 | 869 | 2.4 |
Montana | Palisades Apts | Custer | 0000145 | 50 | 2.4 |
Montana | Bridger Pines Assoc | Gallatin | 0001787 | 40 | 2.5 |
Montana | Coffee Creek | Fergus | 0000179 | 85 | 2.5 |
Montana | West Yellowstone WS | Gallatin | 0003136 | 935 | 2.5 |
Montana | Alta TC | Custer | 0000139 | 60 | 2.7 |
Montana | Bill’s Trailer Villa | Custer | 0000551 | 20 | 2.7 |
Montana | Hangman’s Tree WUA | Jefferson | 0000128 | 130 | 3.1 |
Montana | Ashland | Rosebud | 0000458 | 300 | 3.2 |
Montana | Spring Grove TC | Dawson | 0000412 | 90 | 3.4 |
Montana | Spring Water Colony | Wheatland | 0000719 | 64 | 3.5 |
Montana | St Labre Indian School | Rosebud | 0000018 | 400 | 3.9 |
Montana | Highland Park Util Assoc | Dawson | 000408 | 450 | 4.2 |
Montana | Lambert | Richland | 0000269 | 150 | 4.5 |
Montana | Richey | Dawson | 0000316 | 259 | 4.7 |
Montana | Valley View Water District | Richland | 0000514 | 100 | 5.0 |
Montana | Circle | McCone | 0000176 | 805 | 5.5 |
Montana | Bompart TC | Jefferson | 0002947 | 50 | 7.3 |
Please email Fluoride Action Network if you have information to share on levels of naturally occurring fluoride in U.S. drinking water or other bodies of water.
Percentage of State Population served by Public Water Systems that Receive Fluoridated Water |
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State | 2014 | 2012 | 2006 | 2000 | 1992 |
Montana | 33.7% | 32.0% | 31.3% | 22.2% |
25.9% |