Know Your Environment. Protect Your Health.

Fluoride

Lido-point Lookout Water District

Fluoride occurs naturally in surface and groundwater and is also added to drinking water by many water systems to prevent cavities and support oral health in people.

In 2015, the Department of Health and Human Services updated its recommendation of an optimal level of 0.7 parts per million, or ppm, added to drinking water based on the health benefits of tooth decay prevention. Studies have shown that fluoride added to community water systems at this level reduces dental cavities, especially in children.

And studies have conclusively shown that fluoride in toothpaste and mouthwash can also provide these benefits. Read More.

Health Concerns

Although the HHS-recommended level of 0.7 ppm can help promote oral health in children and adults, this level is likely too high for bottle-fed babies. EWG recommends that caregivers mix baby formula with fluoride-free water.

And fluoride in water at higher levels can be detrimental for everyone, especially children.

Long-term ingestion of higher levels of fluoride in water increases dental fluorosis, which includes mottling, pitting and weakening of the teeth in children.

A 2024 authoritative assessment by the National Toxicology Program found that higher levels of fluoride exposure, such as drinking water containing more than 1.5 ppm of fluoride, are associated with lower IQ in children. The conclusion was based on studies in human populations outside of the U.S.

Affecting systems with naturally occurring fluoride, 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 fracture. But these effects may occur at lower levels of exposure, raising concerns that the current limit may not adequately protect public health.

 

201

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND390ND
20190.00387 ppm311ND - 0.120 ppm
20200.00244 ppm451ND - 0.110 ppm
2021ND370ND
20220.0241 ppm276ND - 0.120 ppm
2023ND220ND

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 4 ppm

ppm = parts per million

All test results

Date Lab ID Result
2018-01-107040032001-PRIND
2018-01-107040032002-PRIND
2018-01-107040032003-PRIND
2018-02-067042133002-PRIND
2018-02-067042133001-PRIND
2018-02-067042133003-PRIND
2018-03-077044701001-PRIND
2018-03-077044701002-PRIND
2018-03-077044701003-PRIND
2018-04-107047837002-PRIND
2018-04-107047837003-PRIND
2018-04-107047837001-PRIND
2018-05-087050980002-PRIND
2018-05-087050980003-PRIND
2018-05-087050980001-PRIND
2018-06-147054970002-PRIND
2018-06-147054970003-PRIND
2018-06-147054970001-PRIND
2018-07-057057124001ND
2018-07-107057677001-PRIND
2018-07-107057677002-PRIND
2018-07-107057677003-PRIND
2018-07-207058917001ND
2018-07-247059241001-PRIND
2018-08-057060832003-PRIND
2018-08-087060832002-PRIND
2018-08-087060832001-PRIND
2018-09-137064721001ND
2018-09-137064721002ND
2018-09-137064721003ND
2018-10-097067334001-PRIND
2018-10-097067334003-PRIND
2018-10-097067334002-PRIND
2018-11-017069717001ND
2018-11-017069717002ND
2018-11-017069717003ND
2018-12-037072628005ND
2018-12-037072628006-PRIND
2018-12-037072628004-PRIND
2019-01-037075453002-PRIND
2019-01-037075453001-PRIND
2019-01-037075453003-PRIND
2019-02-057078359001-PRIND
2019-02-057078359003-PRIND
2019-02-057078359002-PRIND
2019-03-147082345002-PRIND
2019-03-147082345003-PRIND
2019-03-147082345001-PRIND
2019-04-047084642002-PRI0.120 ppm
2019-04-047084642003-PRIND
2019-04-047084642001-PRIND
2019-05-027087916002-PRIND
2019-05-027087916003-PRIND
2019-05-027087916001-PRIND
2019-06-067092442003ND
2019-06-067092442001ND
2019-06-067092442002ND
2019-07-067096826002-PRIND
2019-07-067096826003-PRIND
2019-07-097096826001-PRIND
2019-08-017099784001-PRIND
2019-08-1370101005002ND
2019-08-1370101005001-PRIND
2019-08-13701005003ND
2019-09-1070104356002-PRIND
2019-09-1070104356001ND
2019-09-1070104356003-PRIND
2019-10-0970107898003-PRIND
2019-10-0970107898001-PRIND
2019-10-0970107898002-PRIND
2020-01-1470118229003-PRIND
2020-01-1470118229001-PRIND
2020-01-1470118229002-PRIND
2020-02-0570120620001-PRIND
2020-02-0570120620002-PRIND
2020-02-0570120620003-PRIND
2020-03-0470123875003-PRIND
2020-03-0470123875001-PRIND
2020-03-0470123875002-PRIND
2020-04-0270126829001-PRIND
2020-04-0270126829002-PRIND
2020-04-0270126829003-PRIND
2020-05-0570130002002-PRIND
2020-05-0570130002001-PRIND
2020-05-0570130002003-PRIND
2020-06-0470133344001-PRIND
2020-06-0470133344002ND
2020-06-0470133344003ND
2020-06-2970136292001-PRIND
2020-06-2970136292002-PRIND
2020-06-2970136292003-PRIND
2020-07-0270139123002-PRIND
2020-07-1570138292001-PRIND
2020-07-1570138292002-PRIND
2020-07-1570138292003-PRIND
2020-07-2270139123001ND
2020-08-1470141995002-PRIND
2020-08-1470141995001ND
2020-09-3070147753002 PRIND
2020-09-3070147753003 PRI0.110 ppm
2020-10-0870148839002-PRIND
2020-10-0870148839004-PRIND
2020-10-0870148839001-PRIND
2020-10-0870148839003-PRIND
2020-10-0870148839005-PRIND
2020-11-1270153204001-PRIND
2020-11-1270153204002-PRIND
2020-11-1270153204003-PRIND
2020-11-1970154127002-PRIND
2020-11-1970154127001ND
2020-12-0370155408003-PRIND
2020-12-0370155408002-PRIND
2020-12-0370155408001-PRIND
2020-12-1570156696001-PRIND
2020-12-1570156696002-PRIND
2021-01-0670158510001-PRIND
2021-01-0670158510003-PRIND
2021-01-0670158510002-PRIND
2021-03-0470164711003-PRIND
2021-03-0470164711002-PRIND
2021-03-0470164711001-PRIND
2021-04-0870168399003-PRIND
2021-04-0870168399001-PRIND
2021-04-0870168399002-PRIND
2021-05-0570171749001-PRIND
2021-05-0570171749002-PRIND
2021-05-0570171749003-PRIND
2021-05-2570174340007-PRIND
2021-06-0370175492001-PRIND
2021-06-0370175492003-PRIND
2021-06-0370175544005-PRIND
2021-06-0370175492002-PRIND
2021-07-1570181428002-PRIND
2021-07-1570181428001-PRIND
2021-07-1570180616002-PRIND
2021-07-1570180616003-PRIND
2021-07-1570180616001-PRIND
2021-08-0570183115001-PRIND
2021-08-0570183115002-PRIND
2021-08-0570183117003-PRIND
2021-08-0570183117002-PRIND
2021-08-0570183117001-PRIND
2021-10-0770190196002ND
2021-10-0770190196001ND
2021-10-0770190196005ND
2021-10-0770190196003-PRIND
2021-10-0770190196004ND
2021-11-0470193563004-PRIND
2021-11-0470193563005-PRIND
2021-11-0470193563002-PRIND
2021-11-0470193563001-PRIND
2021-11-0470193563003-PRIND
2022-01-0670200066001-PRI0.110 ppm
2022-01-0670200066002-PRIND
2022-01-0670200066005-PRI0.110 ppm
2022-01-0670200066003-PRI0.110 ppm
2022-01-0670200066004-PRI0.1000 ppm
2022-02-0170202576002-PRIND
2022-02-0170202576004-PRI0.1000 ppm
2022-02-0170202576003-PRIND
2022-02-0170202576001-PRIND
2022-02-0170202576005-PRI0.120 ppm
2022-05-1170214332002-PRIND
2022-05-1170214332001-PRIND
2022-07-0770221282003ND
2022-07-2170223042001ND
2022-07-2170223042002ND
2022-08-0470224569004ND
2022-08-0470224569002-PRIND
2022-08-0470224569001-PRIND
2022-08-0470224569003ND
2022-08-0470224569005ND
2022-10-0670232553002-PRIND
2022-10-0670232553001-PRIND
2022-10-0670232553004-PRIND
2022-10-0670232553003-PRIND
2022-10-0670232553005-PRIND
2022-11-0370235574002-PRIND
2022-11-0370235574001-PRIND
2023-01-0570242216001-PRIND
2023-01-0570242216003-PRIND
2023-01-0570242216002-PRIND
2023-01-0570242216004-PRIND
2023-01-0570242216005-PRIND
2023-04-0570251709005-PRIND
2023-04-0570251709002-PRIND
2023-04-0570251709004-PRIND
2023-04-0570251709003-PRIND
2023-04-0570251709001-PRIND
2023-05-0370255053001-PRIND
2023-05-0370255053002-PRIND
2023-05-0370255053003-PRIND
2023-05-0370255053004-PRIND
2023-05-0370255053005-PRIND
2023-07-0570261986003-PRIND
2023-07-0570261986002-PRIND
2023-07-0570261986001-PRIND
2023-08-0270265505002-PRIND
2023-08-0270265505001-PRIND
2023-08-0270265505003-PRIND
2023-10-2670275553001-PRIND