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EWG's Tap Water Database — 2019 UPDATE

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Fluoride

Colorado Springs Utilities

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.615 ppm440.130 ppm - 1.73 ppm
20130.464 ppm550.130 ppm - 1.36 ppm
20140.478 ppm550.130 ppm - 1.43 ppm
20150.586 ppm550.240 ppm - 1.54 ppm
20160.536 ppm770.160 ppm - 1.23 ppm
20170.582 ppm550.150 ppm - 1.44 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 Result
2012-04-041.73 ppm
2012-04-040.400 ppm
2012-04-040.200 ppm
2012-04-040.130 ppm
2013-08-070.200 ppm
2013-08-070.130 ppm
2013-08-070.210 ppm
2013-08-071.36 ppm
2013-08-070.420 ppm
2014-05-130.130 ppm
2014-05-130.130 ppm
2014-05-130.400 ppm
2014-05-131.43 ppm
2014-05-130.300 ppm
2015-04-070.560 ppm
2015-04-070.240 ppm
2015-04-070.280 ppm
2015-04-071.54 ppm
2015-04-070.310 ppm
2016-04-041.23 ppm
2016-04-040.160 ppm
2016-04-050.620 ppm
2016-05-100.540 ppm
2016-05-250.200 ppm
2016-07-060.530 ppm
2016-10-030.470 ppm
2017-01-040.490 ppm
2017-04-051.44 ppm
2017-04-050.600 ppm
2017-04-050.150 ppm
2017-04-050.230 ppm