Fluoride
New York American Water - Lynbrook
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 35 | 0 | ND |
2015 | ND | 34 | 0 | ND |
2016 | ND | 51 | 0 | ND |
2017 | ND | 46 | 0 | ND |
2018 | ND | 55 | 0 | ND |
2019 | 0.00233 ppm | 60 | 1 | ND - 0.140 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 |
---|---|---|
2014-01-27 | 24474301-PRI | ND |
2014-01-27 | 24476201-PRI | ND |
2014-01-27 | 24476501-PRI | ND |
2014-01-27 | 24475601-PRI | ND |
2014-02-19 | 24785001-PRI | ND |
2014-02-19 | 4785601-PRI | ND |
2014-02-19 | 24783901-PRI | ND |
2014-03-19 | 25025901-PRI | ND |
2014-03-19 | 25024401-PRI | ND |
2014-04-14 | 25192101-PRI | ND |
2014-04-14 | 25193001-PRI | ND |
2014-04-14 | 25193501-PRI | ND |
2014-04-14 | 25193801-PRI | ND |
2014-05-08 | 25666701-PRI | ND |
2014-05-13 | 25667401-PRI | ND |
2014-05-14 | 25667901-PRI | ND |
2014-06-11 | 25932701-PRI | ND |
2014-06-11 | 25932401-PRI | ND |
2014-06-13 | 1406A17-001-PRI | ND |
2014-07-14 | 26308201-PRI | ND |
2014-07-21 | 26310201-PRI | ND |
2014-07-21 | 26309901-PRI | ND |
2014-07-21 | 26309401-PRI | ND |
2014-07-23 | 25668201-PRI | ND |
2014-08-25 | 26729001-PRI | ND |
2014-08-25 | 26730001-PRI | ND |
2014-08-25 | 26730501-PRI | ND |
2014-09-03 | 26730801-PRI | ND |
2014-09-10 | 26897201-PRI | ND |
2014-09-10 | 26896201-PRI | ND |
2014-09-17 | 26898001-PRI | ND |
2014-09-17 | 26897701-PRI | ND |
2014-10-16 | 27256201-PRI | ND |
2014-11-04 | 275437-PRI | ND |
2014-11-04 | 27544201-PRI | ND |
2015-01-21 | 28012501-PRI | ND |
2015-01-21 | 28011901-PRI | ND |
2015-01-29 | 28013301-PRI | ND |
2015-01-29 | 28012901-POCS | ND |
2015-02-12 | 28170501-PRI | ND |
2015-02-12 | 28170801-PRI | ND |
2015-02-24 | 28171101-PRI | ND |
2015-02-24 | 28171401-PRI | ND |
2015-03-18 | 28369301-PRI | ND |
2015-03-18 | 28370101-PRI | ND |
2015-03-26 | 28370501-PRI | ND |
2015-03-26 | 283703 | ND |
2015-04-23 | 281278 PRI | ND |
2015-04-23 | 287137 PRI | ND |
2015-04-28 | 28714101-PRI | ND |
2015-04-28 | 28712901-PRI | ND |
2015-06-18 | 289022 PRI | ND |
2015-06-18 | 289017 PRI | ND |
2015-06-18 | 289012 PRI | ND |
2015-06-23 | 291727 PRI | ND |
2015-06-25 | 291737 | ND |
2015-06-25 | 291735 | ND |
2015-07-21 | 1507F36-001 PRI | ND |
2015-07-27 | 296107 PRI | ND |
2015-07-27 | 296101 PRI | ND |
2015-07-29 | 296111 PRI | ND |
2015-07-29 | 296115 PRI | ND |
2015-07-29 | 289025 PRI | ND |
2015-08-13 | 1508A78-001 SEC | ND |
2015-08-13 | 1508A78-001 PRI | ND |
2015-08-19 | 29935801 | ND |
2015-08-19 | 29936101 PRI | ND |
2015-11-09 | 306823 | ND |
2015-12-16 | 306826 PRI | ND |
2016-01-21 | 31140901 | ND |
2016-01-21 | 31140501 PRI | ND |
2016-02-23 | 31315801 PRI | ND |
2016-02-23 | 31316101 PRI | ND |
2016-02-23 | 31315401 | ND |
2016-02-23 | 31316401 PRI | ND |
2016-02-26 | 1602J56-001 PRI | ND |
2016-02-26 | 1602J56-002 PRI | ND |
2016-03-30 | 31554101 PRI | ND |
2016-03-30 | 31555301 | ND |
2016-03-31 | 31555901 PRI | ND |
2016-03-31 | 31555601 PRI | ND |
2016-04-20 | 1604J67-001 PRI | ND |
2016-04-21 | 1604K35-001 PRI | ND |
2016-04-28 | 31786401 PRI | ND |
2016-04-28 | 31785801 PRI | ND |
2016-05-17 | 1605F60-001 PRI | ND |
2016-05-18 | 1605G73-001 PRI | ND |
2016-05-20 | 1605J08-002 PRI | ND |
2016-05-20 | 1605J18-002 PRI | ND |
2016-05-31 | 32044301 PRI | ND |
2016-05-31 | 32044801 PRI | ND |
2016-06-14 | 1606D39-001 PRI | ND |
2016-06-15 | 32436301 PRI | ND |
2016-06-15 | 32436601 PRI | ND |
2016-06-22 | 32044501 PRI | ND |
2016-06-28 | 1606R55-001 PRI | ND |
2016-06-29 | 1606S97-001 PRI | ND |
2016-07-21 | 32784401 PRI | ND |
2016-07-21 | 32783201 | ND |
2016-07-21 | 32783801 PRI | ND |
2016-08-31 | 1608T21-004 PRI | ND |
2016-08-31 | 330450 PRI | ND |
2016-08-31 | 1608T21-003 PRI | ND |
2016-08-31 | 33044301 PRI | ND |
2016-08-31 | 32784801 PRI | ND |
2016-08-31 | 1608T21-002 | ND |
2016-08-31 | 1608T21-001 PRI | ND |
2016-08-31 | 33045301 | ND |
2016-09-26 | 33323001 | ND |
2016-09-26 | 33045601 PRI | ND |
2016-09-26 | 33321501 PRI | ND |
2016-09-26 | 33323301 PRI | ND |
2016-09-26 | 33322701 PRI | ND |
2016-10-11 | 701713002 PRI | ND |
2016-10-11 | 701713001 PRI | ND |
2016-11-14 | 33592501 PRI | ND |
2016-11-14 | 33593101 PRI | ND |
2016-11-29 | 705607004 PRI | ND |
2016-11-29 | 705607005 PRI | ND |
2016-11-29 | 705607006 PRI | ND |
2017-01-31 | 34387701-PRI | ND |
2017-01-31 | 34388301-PRI | ND |
2017-02-02 | 34388901-PRI | ND |
2017-02-02 | 7010466001-PRI | ND |
2017-02-02 | 34389301-PRI | ND |
2017-03-30 | 34959601-PRI | ND |
2017-03-30 | 34959001-PRI | ND |
2017-03-30 | 34960201-PRI | ND |
2017-03-30 | 34959901-PRI | ND |
2017-04-07 | 7015287001-PRI | ND |
2017-04-11 | 35264501-PRI | ND |
2017-04-11 | 35263801-PRI | ND |
2017-04-12 | 7015680006-PRI | ND |
2017-04-26 | 7017021001-PRI | ND |
2017-05-16 | 7018812001-PRI | ND |
2017-05-16 | 7018812002-PRI | ND |
2017-05-30 | 7019868001-PRI | ND |
2017-05-30 | 7019868003-PRI | ND |
2017-06-09 | 7020949001-PRI | ND |
2017-06-09 | 7020949002-PRI | ND |
2017-06-13 | 35952501-PRI | ND |
2017-06-13 | 35951901-PRI | ND |
2017-07-31 | 36394401-PRI | ND |
2017-07-31 | 36393201-PRI | ND |
2017-07-31 | 36393601-PRI | ND |
2017-07-31 | 36394001-PRI | ND |
2017-08-24 | 36785601-PRI | ND |
2017-08-24 | 36785901-PRI | ND |
2017-08-24 | 36786201-PRI | ND |
2017-08-24 | 36785201-PRI | ND |
2017-09-14 | 37096001-PRI | ND |
2017-09-14 | 37095401-PRI | ND |
2017-09-14 | 37096601-PRI | ND |
2017-09-14 | 37096301-PRI | ND |
2017-09-20 | 35265101-PRI | ND |
2017-09-20 | 35265501-PRI | ND |
2017-09-26 | 7031074001-PRI | ND |
2017-12-07 | 37999101-PRI | ND |
2017-12-07 | 38000001-PRI | ND |
2017-12-11 | 37750701-PRI | ND |
2017-12-11 | 37751301-PRI | ND |
2017-12-11 | 37751001-PRI | ND |
2017-12-11 | 37749901-PRI | ND |
2017-12-22 | 7038997003-PRI | ND |
2017-12-28 | 7039309005-PRI | ND |
2017-12-29 | 7039358002-PRI | ND |
2018-01-16 | 7040538002-PRI | ND |
2018-01-30 | 38291401-PRI | ND |
2018-01-30 | 38292001-PRI | ND |
2018-01-30 | 38292601-PRI | ND |
2018-01-30 | 38293001-PRI | ND |
2018-02-06 | 7042142001-PRI | ND |
2018-02-15 | 38678301-PRI | ND |
2018-02-15 | 38677701-PRI | ND |
2018-02-28 | 38678901-PRI | ND |
2018-02-28 | 38678601-PRI | ND |
2018-03-02 | 7044372001-PRI | ND |
2018-03-08 | 7044798001-PRI | ND |
2018-03-08 | 38910201-PRI | ND |
2018-03-08 | 38909401-PRI | ND |
2018-03-08 | 7044798002-PRI | ND |
2018-03-15 | 38910801-PRI | ND |
2018-03-15 | 38910501-PRI | ND |
2018-03-23 | 7046103001-PRI | ND |
2018-04-12 | 7048244002-PRI | ND |
2018-04-12 | 7048247002-PRI | ND |
2018-04-12 | 7048247001-PRI | ND |
2018-04-12 | 7048244001-PRI | ND |
2018-04-20 | 7049182001-PRI | ND |
2018-04-23 | 7049264003-PRI | ND |
2018-04-23 | 7049264004-PRI | ND |
2018-04-26 | 7049697001-PRI | ND |
2018-04-26 | 7049697002-PRI | ND |
2018-05-17 | 7052007002-PRI | ND |
2018-05-17 | 7052007001-PRI | ND |
2018-05-18 | 7052192005-PRI | ND |
2018-05-18 | 7052192001-PRI | ND |
2018-05-23 | 7052609001-PRI | ND |
2018-05-23 | 7052609002-PRI | ND |
2018-06-20 | 7055601001-PRI | ND |
2018-06-20 | 7055601002-PRI | ND |
2018-07-19 | 40329701-PRI | ND |
2018-07-19 | 40328901-PRI | ND |
2018-07-19 | 40328101-PRI | ND |
2018-07-31 | 39946301-PRI | ND |
2018-07-31 | 39946701-PRI | ND |
2018-07-31 | 40330501-PRI | ND |
2018-08-20 | 40695201-PRI | ND |
2018-08-20 | 7062104002-PRI | ND |
2018-08-20 | 40695601-PRI | ND |
2018-08-20 | 40695401-PRI | ND |
2018-09-21 | 7065602002-PRI | ND |
2018-09-21 | 7065602001-PR | ND |
2018-10-11 | 41552601-PRI | ND |
2018-10-11 | 41164801-PRI | ND |
2018-10-11 | 41552101-PRI | ND |
2018-10-29 | 42042901-PRI | ND |
2018-10-29 | 42042701-PRI | ND |
2018-10-31 | 42043101-PRI | ND |
2018-12-03 | 42043301-PRI | ND |
2018-12-20 | 42304301-PRI | ND |
2019-02-21 | 42955001-PRI | ND |
2019-02-21 | 42954901-PRI | ND |
2019-02-21 | 42954801-PRI | ND |
2019-02-21 | 42955101-PRI | ND |
2019-03-06 | 43350701-PRI | ND |
2019-03-06 | 43350901-PRI | ND |
2019-03-06 | 43350601-PRI | ND |
2019-03-06 | 43350801-PRI | ND |
2019-03-12 | 42602401-PRI | ND |
2019-03-12 | 42603601-PRI | ND |
2019-03-12 | 42603001-PRI | ND |
2019-03-12 | 42601801-PRI | ND |
2019-03-25 | 42304901-PRI | ND |
2019-03-25 | 42304501-PRI | ND |
2019-03-25 | 42304701-PRI | ND |
2019-03-27 | 7083592002-PRI | ND |
2019-03-27 | 7083592001-PRI | ND |
2019-04-01 | 7084047001-PRI | ND |
2019-04-01 | 7084047002-PRI | ND |
2019-04-12 | 7085688001-PRI | ND |
2019-04-17 | 7086203002-PRI | ND |
2019-04-17 | 7086197002-PRI | 0.140 ppm |
2019-04-17 | 7086232002-PRI | ND |
2019-04-24 | 7087084002-PRI | ND |
2019-04-29 | 43355801 | ND |
2019-04-29 | 43355501-PRI | ND |
2019-04-29 | 43355701 | ND |
2019-04-29 | 43355601 | ND |
2019-05-01 | 7087810002-PRI | ND |
2019-05-01 | 7087810001-PRI | ND |
2019-05-01 | 7087810003-PRI | ND |
2019-05-20 | 7090154002-PRI | ND |
2019-05-20 | 7090154001-PRI | ND |
2019-06-04 | 7091936002-PRI | ND |
2019-06-05 | 7092201001-PRI | ND |
2019-06-05 | 7092201002-PRI | ND |
2019-06-11 | 43362301 | ND |
2019-06-13 | 43358401-PRI | ND |
2019-06-13 | 43358701 | ND |
2019-07-11 | 43367001-PRI | ND |
2019-07-11 | 43366801-PRI | ND |
2019-07-11 | 43366701-PRI | ND |
2019-07-11 | 43366901-PRI | ND |
2019-08-09 | 70100741001-PRI | ND |
2019-08-09 | 70100741002-PRI | ND |
2019-09-19 | 46310201-PRI | ND |
2019-09-23 | 46310301-PRI | ND |
2019-09-23 | 46310101-PRI | ND |
2019-10-03 | 46310001-PRI | ND |
2019-10-04 | 70107403001-PRI | ND |
2019-10-07 | 46963201-PRI | ND |
2019-10-31 | 46963101-PRI | ND |
2019-11-13 | 469633001-PRI | ND |
2019-11-13 | 46963001-PRI | ND |
2019-11-18 | 47292501-PRI | ND |
2019-12-09 | 47292401-PRI | ND |
2019-12-16 | 47292301-PRI | ND |
2019-12-16 | 47292601-PRI | ND |
2019-12-18 | 47625501-PRI | ND |
2019-12-19 | 47625401-PRI | ND |