EWG's Tap Water Database — 2019 UPDATE



Tifton-Tift County Water System

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 exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20130.396 ppm880.260 ppm - 0.490 ppm
20160.271 ppm86ND - 0.540 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
2013-12-03AI241260.470 ppm
2013-12-03AI241250.260 ppm
2013-12-03AI241240.330 ppm
2013-12-03AI241230.490 ppm
2013-12-03AI241220.460 ppm
2013-12-03AI241210.380 ppm
2013-12-03AI241170.410 ppm
2013-12-16AI251170.370 ppm
2016-07-05AJ166040.370 ppm
2016-07-05AJ166030.390 ppm
2016-07-05AJ166010.210 ppm
2016-07-05AJ166000.440 ppm
2016-07-05AJ165980.220 ppm
2016-09-07AJ261780.540 ppm