Fluoride
City of Buena Park
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.
173
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.561 ppm | 50 | 50 | 0.350 ppm - 0.970 ppm |
| 2015 | 0.547 ppm | 56 | 56 | 0.450 ppm - 0.930 ppm |
| 2016 | 0.523 ppm | 20 | 20 | 0.430 ppm - 0.920 ppm |
| 2017 | 0.481 ppm | 16 | 16 | 0.440 ppm - 0.540 ppm |
| 2018 | 0.811 ppm | 8 | 8 | 0.770 ppm - 0.900 ppm |
| 2019 | 0.525 ppm | 23 | 23 | 0.400 ppm - 0.880 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 |
|---|---|---|
| 2014-02-03 | 3761-007-0945 | 0.510 ppm |
| 2014-02-03 | 3761-008-0930 | 0.450 ppm |
| 2014-02-03 | 3761-012-0830 | 0.840 ppm |
| 2014-02-03 | 3761-016-0905 | 0.410 ppm |
| 2014-02-06 | 3761-009-0955 | 0.490 ppm |
| 2014-02-06 | 3761-016-1320 | 0.450 ppm |
| 2014-02-06 | 3761-017-0845 | 0.450 ppm |
| 2014-03-03 | 3761-008-1005 | 0.470 ppm |
| 2014-03-03 | 3761-009-1030 | 0.460 ppm |
| 2014-03-03 | 3761-016-0930 | 0.450 ppm |
| 2014-03-31 | 3761-007-0945 | 0.560 ppm |
| 2014-03-31 | 3761-008-0920 | 0.520 ppm |
| 2014-03-31 | 3761-009-0950 | 0.530 ppm |
| 2014-03-31 | 3761-016-0855 | 0.520 ppm |
| 2014-04-02 | 3761-016-0750 | 0.350 ppm |
| 2014-04-02 | 3761-017-0825 | 0.480 ppm |
| 2014-04-14 | 3761-027-0925 | 0.500 ppm |
| 2014-04-22 | 4417-012-1100 | 0.900 ppm |
| 2014-04-22 | 4417-016-1020 | 0.460 ppm |
| 2014-04-22 | 4417-017-0905 | 0.470 ppm |
| 2014-04-24 | 4417-008-0930 | 0.490 ppm |
| 2014-04-24 | 4417-009-1030 | 0.510 ppm |
| 2014-06-02 | 3761-008-0840 | 0.480 ppm |
| 2014-06-02 | 3761-012-1000 | 0.870 ppm |
| 2014-06-02 | 3761-016-0810 | 0.460 ppm |
| 2014-06-02 | 3761-027-0755 | 0.480 ppm |
| 2014-06-05 | 3761-016-0820 | 0.530 ppm |
| 2014-06-05 | 3761-017-0750 | 0.480 ppm |
| 2014-06-30 | 3761-008-0800 | 0.550 ppm |
| 2014-06-30 | 3761-009-0940 | 0.550 ppm |
| 2014-06-30 | 3761-016-0825 | 0.520 ppm |
| 2014-06-30 | 3761-016-1000 | 0.520 ppm |
| 2014-06-30 | 3761-027-0815 | 0.540 ppm |
| 2014-07-09 | 3761-007-0945 | 0.590 ppm |
| 2014-07-09 | 3761-012-1000 | 0.940 ppm |
| 2014-07-30 | 4417-027-0945 | 0.430 ppm |
| 2014-08-04 | 3761-009-1000 | 0.550 ppm |
| 2014-08-04 | 3761-016-0835 | 0.500 ppm |
| 2014-08-04 | 3761-016-1015 | 0.500 ppm |
| 2014-08-08 | 3761-007-1000 | 0.570 ppm |
| 2014-08-08 | 3761-008-0850 | 0.540 ppm |
| 2014-08-08 | 3761-012-0930 | 0.960 ppm |
| 2014-08-08 | 3761-017-0840 | 0.520 ppm |
| 2014-09-02 | 3761-008-0845 | 0.570 ppm |
| 2014-09-02 | 3761-012-1000 | 0.970 ppm |
| 2014-09-02 | 3761-016-0755 | 0.540 ppm |
| 2014-09-02 | 3761-016-0910 | 0.530 ppm |
| 2014-09-02 | 3761-027-0810 | 0.580 ppm |
| 2014-10-01 | 3761-012-0930 | 0.970 ppm |
| 2014-10-01 | 3761-017-1010 | 0.520 ppm |
| 2015-01-07 | 3761-008-0910 | 0.520 ppm |
| 2015-01-07 | 3761-017-0930 | 0.490 ppm |
| 2015-01-07 | 3761-027-0845 | 0.500 ppm |
| 2015-01-19 | 3761-012-0830 | 0.880 ppm |
| 2015-02-02 | 3761-012-0835 | 0.880 ppm |
| 2015-02-02 | 3761-027-0910 | 0.480 ppm |
| 2015-02-04 | 3761-016-0800 | 0.480 ppm |
| 2015-02-04 | 3761-016-0900 | 0.450 ppm |
| 2015-02-04 | 3761-017-0925 | 0.470 ppm |
| 2015-02-05 | 3761-008-0855 | 0.530 ppm |
| 2015-02-05 | 3761-009-0830 | 0.530 ppm |
| 2015-03-30 | 3761-012-0830 | 0.890 ppm |
| 2015-03-30 | 3761-016-0925 | 0.460 ppm |
| 2015-03-30 | 3761-027-0900 | 0.490 ppm |
| 2015-04-03 | 3761-008-0830 | 0.490 ppm |
| 2015-04-03 | 3761-017-0845 | 0.470 ppm |
| 2015-05-04 | 3761-012-0900 | 0.890 ppm |
| 2015-05-04 | 3761-016-0930 | 0.480 ppm |
| 2015-05-04 | 3761-027-1000 | 0.480 ppm |
| 2015-05-06 | 3761-008-0855 | 0.500 ppm |
| 2015-05-06 | 3761-009-0830 | 0.530 ppm |
| 2015-05-06 | 3761-016-0805 | 0.510 ppm |
| 2015-05-06 | 3761-017-0915 | 0.510 ppm |
| 2015-06-01 | 3761-008-0950 | 0.490 ppm |
| 2015-06-01 | 3761-012-0810 | 0.890 ppm |
| 2015-06-01 | 3761-016-0910 | 0.460 ppm |
| 2015-06-03 | 3761-009-0915 | 0.500 ppm |
| 2015-06-03 | 3761-016-0900 | 0.470 ppm |
| 2015-06-03 | 3761-017-1020 | 0.470 ppm |
| 2015-06-03 | 3761-027-0955 | 0.480 ppm |
| 2015-07-01 | 3761-004-1030 | 0.480 ppm |
| 2015-07-01 | 3761-008-1100 | 0.500 ppm |
| 2015-07-01 | 3761-009-0940 | 0.510 ppm |
| 2015-07-01 | 3761-012-1010 | 0.900 ppm |
| 2015-07-01 | 3761-016-1145 | 0.450 ppm |
| 2015-07-01 | 3761-017-1110 | 0.470 ppm |
| 2015-07-01 | 3761-027-1130 | 0.500 ppm |
| 2015-07-23 | 3761-007-1145 | 0.550 ppm |
| 2015-07-23 | 3761-017-1050 | 0.470 ppm |
| 2015-08-06 | 3761-004-0900 | 0.500 ppm |
| 2015-08-06 | 3761-008-0735 | 0.510 ppm |
| 2015-09-02 | 3761-007-0815 | 0.560 ppm |
| 2015-09-02 | 3761-008-0840 | 0.530 ppm |
| 2015-09-02 | 3761-009-0920 | 0.530 ppm |
| 2015-10-07 | 3761-004-1050 | 0.500 ppm |
| 2015-10-07 | 3761-007-1030 | 0.530 ppm |
| 2015-10-07 | 3761-008-1000 | 0.500 ppm |
| 2015-10-07 | 3761-016-0900 | 0.480 ppm |
| 2015-10-07 | 3761-017-1005 | 0.470 ppm |
| 2015-10-07 | 3761-027-0920 | 0.500 ppm |
| 2015-10-15 | 3761-009-0800 | 0.530 ppm |
| 2015-11-02 | 3761-012-0740 | 0.930 ppm |
| 2015-11-02 | 3761-016-0835 | 0.480 ppm |
| 2015-11-02 | 3761-027-0850 | 0.520 ppm |
| 2015-11-30 | 3761-016-0820 | 0.520 ppm |
| 2015-11-30 | 3761-027-0835 | 0.540 ppm |
| 2016-01-21 | 3761-008-0820 | 0.490 ppm |
| 2016-04-25 | 3761-008-0955 | 0.500 ppm |
| 2016-04-26 | 4417-004-1150 | 0.430 ppm |
| 2016-04-26 | 3761-007-1100 | 0.530 ppm |
| 2016-04-26 | 4417-007-1115 | 0.500 ppm |
| 2016-04-26 | 3761-008-1020 | 0.450 ppm |
| 2016-04-26 | 4417-009-1220 | 0.480 ppm |
| 2016-04-26 | 3761-012-0900 | 0.920 ppm |
| 2016-04-27 | 3761-009-1100 | 0.570 ppm |
| 2016-04-27 | 3761-017-1135 | 0.520 ppm |
| 2016-06-29 | 3761-004-1120 | 0.480 ppm |
| 2016-06-29 | 3761-007-1100 | 0.530 ppm |
| 2016-06-29 | 3761-008-0900 | 0.510 ppm |
| 2016-06-29 | 3761-009-1030 | 0.510 ppm |
| 2016-06-29 | 3761-016-1000 | 0.520 ppm |
| 2016-06-29 | 3761-017-0815 | 0.480 ppm |
| 2016-06-29 | 3761-027-0935 | 0.540 ppm |
| 2016-07-21 | 3761-017-0820 | 0.520 ppm |
| 2016-11-14 | 3761-016-0735 | 0.480 ppm |
| 2016-11-14 | 3761-027-0715 | 0.500 ppm |
| 2017-01-30 | 3761-027-0845 | 0.500 ppm |
| 2017-04-03 | 4417-027-0830 | 0.460 ppm |
| 2017-04-06 | 4417-008-0850 | 0.470 ppm |
| 2017-04-06 | 4417-016-0930 | 0.440 ppm |
| 2017-04-06 | 4417-017-0815 | 0.450 ppm |
| 2017-07-13 | 3761-007-0830 | 0.500 ppm |
| 2017-07-13 | 3761-008-0800 | 0.470 ppm |
| 2017-07-13 | 3761-009-0845 | 0.480 ppm |
| 2017-07-13 | 3761-017-0815 | 0.460 ppm |
| 2017-07-13 | 3761-027-0730 | 0.460 ppm |
| 2017-10-18 | 3761-004-0745 | 0.480 ppm |
| 2017-10-18 | 3761-007-0820 | 0.540 ppm |
| 2017-10-18 | 3761-009-0805 | 0.530 ppm |
| 2017-10-18 | 3761-016-0740 | 0.470 ppm |
| 2017-10-18 | 3761-027-0730 | 0.490 ppm |
| 2017-10-25 | 3761-004-0800 | 0.490 ppm |
| 2018-01-01 | 3761-801-1207 | 0.770 ppm |
| 2018-03-06 | 3761-801-1257 | 0.810 ppm |
| 2018-04-02 | 3761-801-1335 | 0.810 ppm |
| 2018-05-07 | 3761-801-1306 | 0.830 ppm |
| 2018-06-04 | 3761-801-1357 | 0.790 ppm |
| 2018-07-02 | 3761-801-1348 | 0.780 ppm |
| 2018-09-03 | 3761-801-1247 | 0.800 ppm |
| 2018-10-08 | 3761-801-1411 | 0.900 ppm |
| 2019-01-22 | 3761-016-0930 | 0.440 ppm |
| 2019-01-22 | 3761-017-0827 | 0.480 ppm |
| 2019-01-23 | 4417-004-1005 | 0.480 ppm |
| 2019-01-23 | 4417-007-0930 | 0.550 ppm |
| 2019-04-01 | 3761-801-1330 | 0.500 ppm |
| 2019-04-10 | 3761-017-0955 | 0.470 ppm |
| 2019-05-01 | 3761-009-0721 | 0.500 ppm |
| 2019-05-06 | 3761-801-1342 | 0.680 ppm |
| 2019-06-03 | 3761-801-1309 | 0.880 ppm |
| 2019-06-20 | 3761-009-0850 | 0.470 ppm |
| 2019-06-20 | 4417-009-1300 | 0.510 ppm |
| 2019-07-22 | 3761-017-0810 | 0.460 ppm |
| 2019-08-05 | 3761-801-1337 | 0.780 ppm |
| 2019-09-02 | 3761-801-1134 | 0.810 ppm |
| 2019-09-23 | 3761-004-0900 | 0.460 ppm |
| 2019-09-23 | 3761-008-0835 | 0.470 ppm |
| 2019-09-23 | 3761-016-0805 | 0.440 ppm |
| 2019-10-03 | 3761-007-0750 | 0.500 ppm |
| 2019-10-03 | 3761-017-0825 | 0.440 ppm |
| 2019-11-04 | 3761-017-0925 | 0.470 ppm |
| 2019-12-02 | 3761-008-0829 | 0.430 ppm |
| 2019-12-02 | 3761-016-0805 | 0.400 ppm |
| 2019-12-05 | 3761-017-0820 | 0.460 ppm |