Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Fluoride

Beverly Hills Water Department

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.

 

181

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.520 ppm5651ND - 1.06 ppm
20130.604 ppm58580.250 ppm - 1.02 ppm
20140.654 ppm57570.355 ppm - 1.11 ppm
20150.738 ppm10100.496 ppm - 1.11 ppm
2016N/A00N/A
2017N/A00N/A

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
2012-01-209588-017-12000.810 ppm
2012-01-209588-019-1205ND
2012-01-239469-017-08060.633 ppm
2012-01-239469-019-0807ND
2012-01-309469-017-07570.488 ppm
2012-01-309469-019-0757ND
2012-02-069469-017-07550.711 ppm
2012-02-069469-019-07570.167 ppm
2012-02-139469-017-08300.657 ppm
2012-02-139469-019-08270.249 ppm
2012-02-219469-017-08080.735 ppm
2012-02-219469-019-08110.170 ppm
2012-02-279469-017-08000.771 ppm
2012-02-279469-019-08010.191 ppm
2012-03-059469-017-07450.907 ppm
2012-03-059469-019-07340.287 ppm
2012-03-129469-017-07290.813 ppm
2012-03-129469-019-07340.187 ppm
2012-04-309469-017-07320.901 ppm
2012-04-309469-019-07290.188 ppm
2012-05-079469-017-07350.749 ppm
2012-05-079469-019-0731ND
2012-05-149469-017-07350.797 ppm
2012-05-149469-019-0725ND
2012-06-049469-017-07300.891 ppm
2012-06-049469-019-07440.430 ppm
2012-06-189469-017-07510.869 ppm
2012-06-189469-019-07480.182 ppm
2012-06-259469-017-07480.774 ppm
2012-06-259469-019-07450.315 ppm
2012-07-029469-017-08120.836 ppm
2012-07-029469-019-08070.109 ppm
2012-07-099469-017-07380.754 ppm
2012-07-099469-019-07430.293 ppm
2012-07-169469-017-08140.644 ppm
2012-07-169469-019-08050.330 ppm
2012-07-239469-017-07360.734 ppm
2012-07-239469-019-07180.340 ppm
2012-07-309469-017-06500.708 ppm
2012-07-309469-019-06410.328 ppm
2012-10-099469-017-08000.888 ppm
2012-10-099469-019-07590.642 ppm
2012-10-159469-017-07050.709 ppm
2012-10-159469-019-07120.502 ppm
2012-10-229469-017-07550.864 ppm
2012-10-229469-019-07520.400 ppm
2012-10-299469-017-07190.730 ppm
2012-10-299469-019-07150.326 ppm
2012-11-059469-017-07150.818 ppm
2012-11-059469-019-07030.343 ppm
2012-11-129469-017-06380.833 ppm
2012-11-129469-019-06360.352 ppm
2012-12-289469-017-16051.06 ppm
2012-12-289469-019-16050.524 ppm
2012-12-319469-017-06500.776 ppm
2012-12-319469-019-06450.387 ppm
2013-01-079469-017-06210.654 ppm
2013-01-079469-019-06190.257 ppm
2013-01-149469-017-06500.864 ppm
2013-01-149469-019-06400.250 ppm
2013-01-219469-017-06590.784 ppm
2013-01-219469-019-06540.306 ppm
2013-01-289469-017-06300.753 ppm
2013-01-289469-019-06250.344 ppm
2013-02-049469-017-06300.870 ppm
2013-02-049469-019-06270.356 ppm
2013-02-119469-017-13300.782 ppm
2013-02-119469-019-13300.456 ppm
2013-02-199469-017-06340.669 ppm
2013-02-199469-019-06320.258 ppm
2013-02-259469-017-06150.748 ppm
2013-02-259469-019-06250.334 ppm
2013-03-049469-017-06320.718 ppm
2013-03-049469-019-06350.407 ppm
2013-03-119469-017-06200.767 ppm
2013-03-119469-019-06150.353 ppm
2013-03-189469-017-06430.857 ppm
2013-03-189469-019-06400.380 ppm
2013-03-259469-017-12390.889 ppm
2013-03-259469-019-12450.299 ppm
2013-04-019469-017-12351.02 ppm
2013-04-019469-019-12400.308 ppm
2013-06-109469-017-07351.01 ppm
2013-06-109469-019-07350.475 ppm
2013-06-179469-017-11330.960 ppm
2013-06-179469-019-11300.345 ppm
2013-09-049469-017-05380.715 ppm
2013-09-049469-019-05470.482 ppm
2013-09-109469-017-05450.834 ppm
2013-09-109469-019-05470.448 ppm
2013-09-179469-017-00000.791 ppm
2013-09-179469-019-00000.432 ppm
2013-09-249469-017-06190.779 ppm
2013-09-249469-019-06180.444 ppm
2013-09-309469-017-13160.932 ppm
2013-09-309469-019-13080.567 ppm
2013-10-089469-017-00000.795 ppm
2013-10-089469-019-00000.434 ppm
2013-10-159469-017-06250.730 ppm
2013-10-159469-019-06320.417 ppm
2013-11-139469-017-11140.836 ppm
2013-11-139469-019-11200.476 ppm
2013-11-199469-017-04470.757 ppm
2013-11-199469-019-04510.408 ppm
2013-11-269469-017-05130.778 ppm
2013-11-269469-019-05100.456 ppm
2013-12-039469-017-05350.782 ppm
2013-12-039469-019-05370.475 ppm
2013-12-109469-017-05210.832 ppm
2013-12-109469-019-05270.434 ppm
2013-12-279469-017-10360.773 ppm
2013-12-279469-019-10290.450 ppm
2013-12-309469-017-10130.815 ppm
2013-12-309469-019-10110.505 ppm
2014-01-079469-017-07150.836 ppm
2014-01-079469-019-07210.377 ppm
2014-01-149469-017-03520.934 ppm
2014-01-149469-019-03490.490 ppm
2014-01-229469-017-05260.966 ppm
2014-01-229469-019-05200.462 ppm
2014-01-289469-017-06200.888 ppm
2014-01-289469-019-06250.478 ppm
2014-02-049469-017-05310.895 ppm
2014-02-049469-019-05230.434 ppm
2014-02-199469-017-10270.975 ppm
2014-02-199469-019-10320.527 ppm
2014-02-259469-017-05220.892 ppm
2014-02-259469-019-05180.405 ppm
2014-03-189469-017-07400.835 ppm
2014-03-189469-019-07480.362 ppm
2014-03-259469-017-09320.816 ppm
2014-03-259469-019-09280.391 ppm
2014-04-019469-017-08520.918 ppm
2014-04-019469-019-08550.379 ppm
2014-04-089469-017-08250.845 ppm
2014-04-089469-019-08200.386 ppm
2014-04-159469-017-08170.822 ppm
2014-04-159469-019-08000.369 ppm
2014-04-299469-017-08200.966 ppm
2014-04-299469-019-08280.486 ppm
2014-05-089469-017-07440.873 ppm
2014-05-089469-019-07360.396 ppm
2014-05-139469-017-03310.860 ppm
2014-05-139469-019-03350.407 ppm
2014-06-039469-017-07411.04 ppm
2014-06-109469-017-07380.791 ppm
2014-06-109469-019-07300.388 ppm
2014-06-179469-017-07400.791 ppm
2014-06-179469-019-07370.404 ppm
2014-09-169469-017-12550.854 ppm
2014-09-169469-019-12450.626 ppm
2014-09-239469-017-13450.638 ppm
2014-09-239469-019-13490.473 ppm
2014-09-309469-017-12300.802 ppm
2014-09-309469-019-12200.436 ppm
2014-10-079469-017-12420.682 ppm
2014-10-079469-019-12300.355 ppm
2014-10-149469-017-13200.700 ppm
2014-10-149469-019-13160.392 ppm
2014-10-219469-017-13250.922 ppm
2014-10-219469-019-13150.638 ppm
2014-11-189469-017-13590.641 ppm
2014-11-189469-019-13530.458 ppm
2014-11-259469-017-11400.748 ppm
2014-11-259469-019-11360.431 ppm
2014-12-049469-017-11250.881 ppm
2014-12-049469-019-11210.468 ppm
2014-12-089469-017-11510.802 ppm
2014-12-089469-019-11400.495 ppm
2014-12-299469-017-13231.11 ppm
2014-12-299469-019-13220.622 ppm
2015-01-089469-017-08251.02 ppm
2015-01-089469-019-08220.505 ppm
2015-01-149469-017-09050.880 ppm
2015-01-149469-019-09070.496 ppm
2015-01-229469-017-11401.11 ppm
2015-01-229469-019-11310.551 ppm
2015-01-289469-017-06300.890 ppm
2015-01-289469-019-06280.536 ppm
2015-02-039469-017-08430.897 ppm
2015-02-039469-019-08380.498 ppm