Fluoride
City of Waynesboro
Fluoride occurs naturally in surface and groundwater and is also added to drinking water by many water systems. Read More.
Fluoride has been promoted as a chemical that reduces dental cavities. Yet it is now well-established that fluoride primarily exerts its protective effects through topical mechanisms, such as sodium fluoride in toothpaste and mouthwash. In contrast, long-term ingestion of fluoride in water increases dental fluorosis, which includes mottling, pitting and weakening of the teeth. EPA's maximum legal limit is set at 4 parts per million (ppm) to prevent skeletal fluorosis, a condition where bones become brittle and more susceptible to fractures, although these effects may occur at lower doses.
Even fluoride levels of 0.7 ppm, the amount of fluoride in drinking water recommended by the U.S. Public Health Service, can result in too much fluoride for bottle-fed babies. EWG recommends that caregivers mix baby formula with fluoride-free water. The National Toxicology Program is investigating the potential for low doses of fluoride to alter thyroid function and childhood brain development.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.604 ppm | 11 | 11 | 0.0600 ppm - 1.08 ppm |
| 2015 | 0.549 ppm | 13 | 13 | 0.430 ppm - 0.850 ppm |
| 2016 | 0.593 ppm | 11 | 11 | 0.0500 ppm - 1.80 ppm |
| 2017 | 0.519 ppm | 11 | 11 | 0.0800 ppm - 0.770 ppm |
| 2018 | 0.0700 ppm | 1 | 1 | 0.0700 ppm |
| 2019 | 0.0600 ppm | 1 | 1 | 0.0600 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 4 ppm
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-16 | E130902186 | 0.630 ppm |
| 2014-02-25 | E130902187 | 0.720 ppm |
| 2014-03-20 | E130902188 | 0.720 ppm |
| 2014-05-15 | E130902189 | 0.600 ppm |
| 2014-06-30 | E130902190 | 1.08 ppm |
| 2014-07-31 | E130902197 | 0.570 ppm |
| 2014-08-15 | E130902196 | 0.550 ppm |
| 2014-09-25 | E130902195 | 0.550 ppm |
| 2014-10-15 | E130902194 | 0.590 ppm |
| 2014-11-18 | 1411K76-04A-I | 0.0600 ppm |
| 2014-11-25 | E130902191 | 0.570 ppm |
| 2015-01-30 | VA010-DCLS | 0.470 ppm |
| 2015-02-18 | VA010-DCLS | 0.540 ppm |
| 2015-03-25 | VA010-DCLS | 0.600 ppm |
| 2015-04-23 | VA010-DCLS | 0.580 ppm |
| 2015-05-28 | VA010-DCLS | 0.600 ppm |
| 2015-06-05 | VA010-DCLS | 0.550 ppm |
| 2015-07-22 | VA010-DCLS | 0.510 ppm |
| 2015-07-28 | 00281-REI CONSUL | 0.500 ppm |
| 2015-08-26 | VA010-DCLS | 0.530 ppm |
| 2015-09-30 | VA010-DCLS | 0.460 ppm |
| 2015-10-28 | VA010-DCLS | 0.520 ppm |
| 2015-11-30 | VA010-DCLS | 0.850 ppm |
| 2015-12-23 | VA010-DCLS | 0.430 ppm |
| 2016-01-29 | E141001681 | 0.470 ppm |
| 2016-02-25 | E160205487 | 0.570 ppm |
| 2016-03-29 | E150907331 | 0.520 ppm |
| 2016-04-06 | E150907332 | 0.540 ppm |
| 2016-05-31 | E150907329 | 1.80 ppm |
| 2016-08-23 | 16083325-04A | 0.0500 ppm |
| 2016-08-30 | E150907330 | 0.510 ppm |
| 2016-09-16 | E150907328 | 0.520 ppm |
| 2016-10-07 | E150907326 | 0.600 ppm |
| 2016-11-08 | E150907325 | 0.460 ppm |
| 2016-12-05 | E150907324 | 0.480 ppm |
| 2017-01-20 | E150907323 | 0.400 ppm |
| 2017-02-28 | E150907322 | 0.280 ppm |
| 2017-03-31 | E150907321 | 0.250 ppm |
| 2017-06-30 | E150907320 | 0.550 ppm |
| 2017-07-21 | E150907319 | 0.580 ppm |
| 2017-08-07 | E150907342 | 0.570 ppm |
| 2017-08-29 | 17083995-02A-I | 0.0800 ppm |
| 2017-09-25 | E150907327 | 0.710 ppm |
| 2017-10-12 | E150907341 | 0.770 ppm |
| 2017-11-16 | E150907340 | 0.760 ppm |
| 2017-12-08 | E150907339 | 0.760 ppm |
| 2018-08-28 | 18084084-01A | 0.0700 ppm |
| 2019-08-19 | 19082431-04A | 0.0600 ppm |