Fluoride in Vermont well water
In Vermont, <1% of 23,363 private wells tested had fluoride above the Vermont limit (4 mg/L), according to the Vermont Department of Health.
Natural fluoride in bedrock wells can exceed the limit. Above 4 mg/L long-term exposure causes skeletal fluorosis; above 2 mg/L children can develop tooth mottling.
Check your fluoride number
Type the value from your lab report. It is compared to the Vermont limit and the EPA limit, the same way the full interpretation does it.
Test your Vermont well for fluoride
Certified lab analysis of your own tap water, bottles and prepaid return shipping included. The Essential well panel covers arsenic, uranium, nitrate, lead, copper, manganese, iron, sodium and bacteria; radon and PFAS are add-ons.
Order the Tap Score well water test kit, from $209Already tested? Upload the report
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Systems that remove fluoride
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Some links below are affiliate links. If you buy through one, the merchant pays us a commission at no extra cost to you. It does not change which products we list or what the data says.
For fluoride
Under-sink reverse osmosis system
under-sink or countertop, about $300
Look for NSF/ANSI 58 certification listing the contaminant you need removed.
For fluoride
Aquasana SmartFlow reverse osmosis
under-sink or countertop, about $225
Certified to NSF/ANSI 58 and 53 to reduce arsenic (96%, pentavalent), fluoride (90%), lead (99%), nitrate, nitrite and PFOA/PFOS at the kitchen tap, with a remineralizer.
Rather have it installed and sized for your well? Book a free in-home water test with a licensed local company.
Where to get a well tested for fluoride in Vermont: certified labs, state programs and prices.
By county, from homeowner tests
Share of private wells above the state guidance level (4 mg/L) in tests homeowners sent to the state lab, to .
| County | Above state level | Wells tested | Highest |
|---|---|---|---|
| Addison | 1,833 | 15.7 mg/L | |
| Grand Isle | 377 | 9.74 mg/L | |
| Windham | 1,629 | 4.78 mg/L | |
| Chittenden | 5,062 | 7.2 mg/L | |
| Orange | 1,283 | 6.43 mg/L | |
| Orleans | 1,151 | 4.3 mg/L | |
| Rutland | 1,338 | 4.27 mg/L | |
| Franklin | 2,576 | 5.3 mg/L | |
| Washington | 2,784 | 1.54 mg/L | |
| Windsor | 1,930 | 1.6 mg/L | |
| Lamoille | 1,709 | 1.1 mg/L | |
| Caledonia | 970 | 3.9 mg/L | |
| Bennington | 586 | 1.29 mg/L | |
| Essex | 135 | 1.13 mg/L |
Towns with the highest share above the state level
- Westminster, Windham County3% of 137 wells
- Ferrisburgh, Addison County3% of 227 wells
- Topsham, Orange County2% of 47 wells
- Orwell, Addison County2% of 65 wells
- Tunbridge, Orange County1% of 85 wells
- Greensboro, Orleans County1% of 95 wells
- Poultney, Rutland County1% of 92 wells
- Charlotte, Chittenden County<1% of 677 wells
- Westford, Chittenden County<1% of 249 wells
- South Hero, Grand Isle County<1% of 157 wells
- Georgia, Franklin County<1% of 429 wells
- Stowe, Lamoille County0% of 570 wells
- Fairfax, Franklin County0% of 489 wells
- Jericho, Chittenden County0% of 484 wells
- Richmond, Chittenden County0% of 478 wells
- Colchester, Chittenden County0% of 421 wells
- Hinesburg, Chittenden County0% of 421 wells
- Milton, Chittenden County0% of 393 wells
- Underhill, Chittenden County0% of 392 wells
- Williston, Chittenden County0% of 371 wells
- Essex, Chittenden County0% of 339 wells
- Waterbury, Washington County0% of 333 wells
- Cambridge, Lamoille County0% of 300 wells
- Swanton, Franklin County0% of 267 wells
- Morristown, Lamoille County0% of 261 wells
Sources
- Vermont Tracking private well summaries: Town summaries of private well tests reported to the Vermont Department of Health, published through Vermont Environmental Public Health Tracking. Shares are against the limit Vermont applies to each analyte: arsenic 10 ug/L, uranium 20 ug/L (stricter than EPA), fluoride 4 mg/L, nitrate 10 mg/L, gross alpha 15 pCi/L, radon 4,000 pCi/L advisory. Only towns with 20 or more results are published; statistics below the reporting limit show as *. Retrieved September 3, 2026.
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. fluoride counts and shares are listed on each county and town page with their sources.