Fluoride
Saticoy Country Club-city Of Ventura
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.372 ppm | 25 | 25 | 0.250 ppm - 0.450 ppm |
| 2015 | 0.320 ppm | 14 | 14 | 0.270 ppm - 0.390 ppm |
| 2016 | 0.305 ppm | 15 | 15 | 0.210 ppm - 0.380 ppm |
| 2017 | 0.362 ppm | 22 | 22 | 0.260 ppm - 0.920 ppm |
| 2018 | 0.288 ppm | 13 | 13 | 0.160 ppm - 0.370 ppm |
| 2019 | 0.267 ppm | 6 | 6 | 0.120 ppm - 0.360 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 |
|---|---|---|
| 2014-01-06 | 2911-001-1215 | 0.380 ppm |
| 2014-01-06 | 2911-002-1030 | 0.400 ppm |
| 2014-02-03 | 2911-002-1200 | 0.400 ppm |
| 2014-02-03 | 2911-006-1035 | 0.400 ppm |
| 2014-03-10 | 2911-001-1030 | 0.400 ppm |
| 2014-03-10 | 2911-002-0925 | 0.390 ppm |
| 2014-03-10 | 2911-006-1120 | 0.250 ppm |
| 2014-04-07 | 2911-002-1020 | 0.410 ppm |
| 2014-04-07 | 2911-001-1110 | 0.380 ppm |
| 2014-04-07 | 2911-006-0935 | 0.310 ppm |
| 2014-05-05 | 2911-002-1040 | 0.380 ppm |
| 2014-05-05 | 2911-006-1055 | 0.330 ppm |
| 2014-06-02 | 2911-002-1000 | 0.370 ppm |
| 2014-06-02 | 2911-006-0920 | 0.350 ppm |
| 2014-06-02 | 2911-001-1045 | 0.420 ppm |
| 2014-07-07 | 2911-006-0930 | 0.390 ppm |
| 2014-08-04 | 2911-002-1135 | 0.410 ppm |
| 2014-08-04 | 2911-001-1010 | 0.450 ppm |
| 2014-08-04 | 2911-006-0845 | 0.390 ppm |
| 2014-09-08 | 2911-002-1050 | 0.330 ppm |
| 2014-10-06 | 2911-002-1150 | 0.380 ppm |
| 2014-10-06 | 2911-006-1055 | 0.340 ppm |
| 2014-12-01 | 2911-005-0910 | 0.300 ppm |
| 2014-12-01 | 2911-002-1100 | 0.350 ppm |
| 2014-12-01 | 2911-001-1200 | 0.390 ppm |
| 2015-01-05 | 2911-006-0930 | 0.340 ppm |
| 2015-02-02 | 2911-006-1120 | 0.370 ppm |
| 2015-03-02 | 2911-006-1130 | 0.390 ppm |
| 2015-04-06 | 2911-001-1650 | 0.390 ppm |
| 2015-04-06 | 2911-002-1615 | 0.370 ppm |
| 2015-04-06 | 2911-006-1300 | 0.350 ppm |
| 2015-05-04 | 2911-002-0840 | 0.320 ppm |
| 2015-05-04 | 2911-002-0935 | 0.270 ppm |
| 2015-06-01 | 2911-006-1055 | 0.280 ppm |
| 2015-07-06 | 2911-006-0900 | 0.300 ppm |
| 2015-09-08 | 2911-006-1240 | 0.270 ppm |
| 2015-10-05 | 2911-006-1008 | 0.280 ppm |
| 2015-11-02 | 2911-006-1115 | 0.280 ppm |
| 2015-12-08 | 2911-006-0930 | 0.270 ppm |
| 2016-01-04 | 2911-006-1030 | 0.270 ppm |
| 2016-02-02 | 2911-006-1136 | 0.280 ppm |
| 2016-03-07 | 2911-006-1150 | 0.270 ppm |
| 2016-04-04 | 2911-006-0930 | 0.290 ppm |
| 2016-05-02 | 2911-006-0945 | 0.290 ppm |
| 2016-06-06 | 2911-006-0930 | 0.290 ppm |
| 2016-07-11 | 2911-001-1145 | 0.350 ppm |
| 2016-07-11 | 2911-006-1020 | 0.320 ppm |
| 2016-08-01 | 2911-006-1030 | 0.320 ppm |
| 2016-09-12 | 2911-006-1010 | 0.210 ppm |
| 2016-10-10 | 2911-002-0950 | 0.330 ppm |
| 2016-11-07 | 2911-002-1218 | 0.380 ppm |
| 2016-11-07 | 2911-006-1315 | 0.280 ppm |
| 2016-12-05 | 2911-002-1130 | 0.380 ppm |
| 2016-12-05 | 2911-006-1200 | 0.310 ppm |
| 2017-01-09 | 2911-002-1015 | 0.360 ppm |
| 2017-01-09 | 2911-006-1110 | 0.300 ppm |
| 2017-02-06 | 2911-002-0840 | 0.350 ppm |
| 2017-02-06 | 2911-006-1100 | 0.300 ppm |
| 2017-03-06 | 2911-006-0935 | 0.310 ppm |
| 2017-03-06 | 2911-002-0845 | 0.360 ppm |
| 2017-04-03 | 2911-001-0920 | 0.360 ppm |
| 2017-04-03 | 2911-006-0940 | 0.300 ppm |
| 2017-04-03 | 2911-002-0819 | 0.350 ppm |
| 2017-05-01 | 2911-006-0910 | 0.260 ppm |
| 2017-05-01 | 2911-002-0828 | 0.340 ppm |
| 2017-05-01 | 2911-001-0900 | 0.350 ppm |
| 2017-06-05 | 2911-006-0845 | 0.330 ppm |
| 2017-06-05 | 2911-002-1323 | 0.380 ppm |
| 2017-07-03 | 2911-006-0955 | 0.320 ppm |
| 2017-08-07 | 2911-006-0938 | 0.380 ppm |
| 2017-08-07 | 2911-002-0815 | 0.460 ppm |
| 2017-09-05 | 2911-006-0910 | 0.280 ppm |
| 2017-09-05 | 2911-002-0808 | 0.360 ppm |
| 2017-10-02 | 2911-006-0940 | 0.320 ppm |
| 2017-11-06 | 2911-006-0950 | 0.920 ppm |
| 2017-12-04 | 2911-006-1020 | 0.270 ppm |
| 2018-01-08 | 2911-006-0855 | 0.250 ppm |
| 2018-02-05 | 2911-006-1053 | 0.250 ppm |
| 2018-03-05 | 2911-006-1200 | 0.270 ppm |
| 2018-04-02 | 2911-006-1312 | 0.280 ppm |
| 2018-04-02 | 2911-006-0945 | 0.280 ppm |
| 2018-05-07 | 2911-006-1005 | 0.370 ppm |
| 2018-06-04 | 2911-006-0910 | 0.160 ppm |
| 2018-07-02 | 2911-006-0900 | 0.320 ppm |
| 2018-08-06 | 2911-006-0920 | 0.340 ppm |
| 2018-09-04 | 2911-006-1217 | 0.320 ppm |
| 2018-10-01 | 2911-006-1230 | 0.310 ppm |
| 2018-11-05 | 2911-006-1050 | 0.320 ppm |
| 2018-12-03 | 2911-006-1030 | 0.280 ppm |
| 2019-01-07 | 2911-006-1025 | 0.120 ppm |
| 2019-02-04 | 2911-006-1040 | 0.270 ppm |
| 2019-03-04 | 2911-006-1345 | 0.260 ppm |
| 2019-05-06 | 2911-006-1145 | 0.300 ppm |
| 2019-06-03 | 2911-006-1050 | 0.360 ppm |
| 2019-07-01 | 2911-006-1141 | 0.290 ppm |