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EWG's Tap Water Database — 2019 UPDATE

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Fluoride

Atlantic City Municipal Utilities Authority

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.420 ppm87ND - 0.598 ppm
20130.208 ppm53ND - 0.355 ppm
20140.624 ppm660.0962 ppm - 1.04 ppm
20151.06 ppm441.02 ppm - 1.10 ppm
20161.35 ppm221.34 ppm - 1.35 ppm
20170.695 ppm220.550 ppm - 0.840 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
2012-01-12L4031972-1ND
2012-01-12L4031972-20.317 ppm
2012-02-17L4064549-20.501 ppm
2012-02-17L4064549-10.476 ppm
2012-04-26L4137881-10.435 ppm
2012-04-26L4137881-20.439 ppm
2012-10-11L4355327-20.596 ppm
2012-10-11L4355327-10.598 ppm
2013-01-10L4456223-10.355 ppm
2013-01-10L4456223-20.335 ppm
2013-01-16L4462640-1ND
2013-01-16L4462640-2ND
2013-03-28L4538600-10.352 ppm
2014-01-16L4901499-30.106 ppm
2014-01-16L4901499-40.0962 ppm
2014-03-25L4988369-10.732 ppm
2014-03-25L4988369-20.728 ppm
2014-07-15L5162972-31.04 ppm
2014-07-15L5162972-21.04 ppm
2015-01-14L5409386-21.10 ppm
2015-01-14L5409386-11.10 ppm
2015-07-09L5700688-41.02 ppm
2015-07-09L5700688-31.02 ppm
2016-01-06L5966600-71.34 ppm
2016-01-06L5966600-81.35 ppm
2017-02-22L6687631-30.550 ppm
2017-03-08L6713702-10.840 ppm