Know Your Environment. Protect Your Health.

Fluoride

Pine Valley Mutual Water Company

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.

 

139

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.70 ppm12120.670 ppm - 3.20 ppm
20192.10 ppm13130.890 ppm - 3.64 ppm
20201.50 ppm36360.193 ppm - 3.48 ppm
20211.74 ppm23230.273 ppm - 2.98 ppm
20221.66 ppm2322ND - 3.12 ppm
20231.55 ppm32320.180 ppm - 3.00 ppm

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
2018-06-18CA3710039_007_007-2018061808202.40 ppm
2018-06-18CA3710039_016_016-2018061808500.900 ppm
2018-07-02CA3710039_007_007-2018070209052.10 ppm
2018-07-02CA3710039_016_016-2018070209100.870 ppm
2018-08-06CA3710039_003_003-2018080615253.00 ppm
2018-08-06CA3710039_016_016-2018080615051.20 ppm
2018-09-10CA3710039_003_003-2018091012103.20 ppm
2018-09-10CA3710039_016_016-2018091012000.940 ppm
2018-10-15CA3710039_016_016-2018101511301.10 ppm
2018-10-15CA3710039_003_003-2018101510552.80 ppm
2018-12-03CA3710039_016_016-2018120310150.670 ppm
2018-12-03CA3710039_007_007-2018120309301.20 ppm
2019-03-11CA3710039_007_007-2019031110452.10 ppm
2019-03-11CA3710039_016_016-2019031111000.930 ppm
2019-04-02CA3710039_003_003-2019040209052.84 ppm
2019-04-02CA3710039_016_016-2019040210101.35 ppm
2019-06-10CA3710039_003_003-2019061009502.30 ppm
2019-06-10CA3710039_016_016-2019061010500.890 ppm
2019-07-08CA3710039_003_003-2019070811252.10 ppm
2019-08-05CA3710039_003_003-2019080507052.60 ppm
2019-09-09CA3710039_003_003-2019090909503.40 ppm
2019-10-07CA3710039_003_003-2019100710453.64 ppm
2019-10-07CA3710039_016_016-2019100711051.17 ppm
2019-11-12CA3710039_016_016-2019111210301.18 ppm
2019-11-12CA3710039_003_003-2019111210052.81 ppm
2020-02-13CA3710039_007_007-2020021310352.12 ppm
2020-02-13CA3710039_016_016-2020021310150.298 ppm
2020-02-13CA3710039_003_003-2020021310052.91 ppm
2020-06-08CA3710039_003_003-2020060809403.04 ppm
2020-06-15CA3710039_016_016-2020061509101.10 ppm
2020-06-15CA3710039_007_007-2020061509302.26 ppm
2020-07-06CA3710039_003_003-2020070610453.46 ppm
2020-07-06CA3710039_007_007-2020070610552.08 ppm
2020-07-29CA3710039_016_016-2020072909450.994 ppm
2020-07-29CA3710039_007_007-2020072910002.02 ppm
2020-08-03CA3710039_016_016-2020080310300.997 ppm
2020-08-03CA3710039_003_003-2020080310352.99 ppm
2020-08-06CA3710039_007_007-2020080615302.20 ppm
2020-08-06CA3710039_016_016-2020080616000.396 ppm
2020-09-08CA3710039_016_016-2020090812001.07 ppm
2020-09-08CA3710039_003_003-2020090811503.48 ppm
2020-09-08CA3710039_010_010-2020090810400.274 ppm
2020-09-08CA3710039_006_006-2020090811050.602 ppm
2020-09-08CA3710039_007_007-2020090811302.20 ppm
2020-09-13CA3710039_016_016-2020091312001.13 ppm
2020-10-05CA3710039_005_005-2020100512050.224 ppm
2020-10-05CA3710039_001_001-2020100510200.276 ppm
2020-10-05CA3710039_003_003-2020100511502.96 ppm
2020-10-05CA3710039_004_004-2020100511150.374 ppm
2020-10-05CA3710039_007_007-2020100511352.11 ppm
2020-10-05CA3710039_009_009-2020100510350.815 ppm
2020-10-05CA3710039_016_016-2020100511101.10 ppm
2020-10-08CA3710039_016_016-2020100809201.07 ppm
2020-10-08CA3710039_007_007-2020100809002.16 ppm
2020-11-16CA3710039_001_001-2020111609200.254 ppm
2020-11-16CA3710039_009_009-2020111609500.741 ppm
2020-11-16CA3710039_004_004-2020111611400.344 ppm
2020-11-16CA3710039_005_005-2020111610050.193 ppm
2020-12-14CA3710039_016_016-2020121409250.372 ppm
2020-12-14CA3710039_003_003-2020121409303.45 ppm
2020-12-14CA3710039_007_007-2020121409402.09 ppm
2021-02-11CA3710039_016_016-2021021111350.301 ppm
2021-02-11CA3710039_003_003-2021021111252.88 ppm
2021-02-11CA3710039_007_007-2021021111002.07 ppm
2021-04-05CA3710039_007_007-2021040512202.22 ppm
2021-04-05CA3710039_016_016-2021040512500.273 ppm
2021-04-05CA3710039_003_003-2021040512352.98 ppm
2021-05-03CA3710039_003_003-2021050311252.94 ppm
2021-05-03CA3710039_007_007-2021050312302.30 ppm
2021-05-03CA3710039_016_016-2021050312501.09 ppm
2021-06-03CA3710039_003_003-2021060310502.74 ppm
2021-06-03CA3710039_016_016-2021060311001.24 ppm
2021-06-07CA3710039_007_007-2021060710352.12 ppm
2021-06-07CA3710039_016_016-2021060710551.02 ppm
2021-07-19CA3710039_003_003-2021071909552.30 ppm
2021-07-19CA3710039_007_007-2021071908501.14 ppm
2021-07-19CA3710039_016_016-2021071910151.10 ppm
2021-08-09CA3710039_003_003-2021080910102.84 ppm
2021-08-09CA3710039_007_007-2021080911052.08 ppm
2021-08-09CA3710039_016_016-2021080911550.978 ppm
2021-08-09CA3710039_016_016-2021080910051.13 ppm
2021-10-11CA3710039_003_003-2021101112401.92 ppm
2021-10-12CA3710039_007_007-2021101209301.92 ppm
2021-10-12CA3710039_016_016-2021101210200.365 ppm
2022-03-13CA3710039_007_007-2022031316302.20 ppm
2022-03-13CA3710039_003_003-2022031316552.45 ppm
2022-03-13CA3710039_016_016-2022031317001.13 ppm
2022-04-11CA3710039_003_003-2022041109502.62 ppm
2022-04-11CA3710039_007_007-2022041109352.28 ppm
2022-04-11CA3710039_016_016-2022041110151.02 ppm
2022-05-15CA3710039_007_007-2022051514252.23 ppm
2022-05-15CA3710039_003_003-2022051514102.58 ppm
2022-05-15CA3710039_016_016-202205151440ND
2022-06-06CA3710039_003_003-2022060608150.381 ppm
2022-06-06CA3710039_007_007-2022060608501.98 ppm
2022-06-06CA3710039_016_016-2022060609100.840 ppm
2022-07-05CA3710039_016_016-2022070514151.14 ppm
2022-07-05CA3710039_003_003-2022070514353.12 ppm
2022-07-05CA3710039_007_007-2022070513252.28 ppm
2022-07-06CA3710039_016_016-2022070608000.565 ppm
2022-10-16CA3710039_007_007-2022101616202.08 ppm
2022-10-16CA3710039_016_016-2022101616500.790 ppm
2022-11-07CA3710039_016_016-2022110715550.980 ppm
2022-11-07CA3710039_003_003-2022110715001.84 ppm
2022-11-07CA3710039_007_007-2022110715302.24 ppm
2022-12-05CA3710039_003_003-2022120508002.50 ppm
2022-12-05CA3710039_016_016-2022120508050.850 ppm
2023-01-23CA3710039_003_003-2023012308002.10 ppm
2023-01-23CA3710039_016_016-2023012308150.260 ppm
2023-02-06CA3710039_003_003-2023020608101.80 ppm
2023-02-06CA3710039_016_016-2023020608500.800 ppm
2023-02-27CA3710039_003_003-2023022708101.70 ppm
2023-02-27CA3710039_007_007-2023022708502.30 ppm
2023-04-03CA3710039_007_007-2023040309402.40 ppm
2023-04-03CA3710039_003_003-2023040309102.00 ppm
2023-04-03CA3710039_016_016-2023040310050.820 ppm
2023-05-08CA3710039_007_007-2023050808402.50 ppm
2023-05-08CA3710039_016_016-2023050809100.750 ppm
2023-05-08CA3710039_003_003-2023050808101.90 ppm
2023-06-05CA3710039_003_003-2023060508403.00 ppm
2023-06-05CA3710039_016_016-2023060509300.980 ppm
2023-06-19CA3710039_007_007-2023061908152.60 ppm
2023-07-10CA3710039_003_003-2023071008302.80 ppm
2023-07-10CA3710039_016_016-2023071009200.860 ppm
2023-08-09CA3710039_003_003-2023080908102.70 ppm
2023-08-09CA3710039_016_016-2023080909200.850 ppm
2023-08-09CA3710039_007_007-2023080908502.50 ppm
2023-09-05CA3710039_006_006-2023090508300.340 ppm
2023-09-05CA3710039_010_010-2023090508400.260 ppm
2023-09-06CA3710039_007_007-2023090608402.40 ppm
2023-09-06CA3710039_003_003-2023090608102.80 ppm
2023-09-06CA3710039_016_016-2023090609100.990 ppm
2023-10-02CA3710039_007_007-2023100208502.30 ppm
2023-10-02CA3710039_016_016-2023100209400.800 ppm
2023-10-02CA3710039_003_003-2023100208102.60 ppm
2023-11-01CA3710039_001_001-2023110108000.230 ppm
2023-11-01CA3710039_005_005-2023110108400.180 ppm
2023-11-01CA3710039_009_009-2023110109000.690 ppm
2023-11-01CA3710039_004_004-2023110108200.380 ppm