Fluoride
Cws - Lakeland
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.
244
Samples
45
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 1.99 ppm | 40 | 40 | 0.330 ppm - 6.30 ppm |
| 2015 | 1.92 ppm | 38 | 38 | 0.364 ppm - 6.66 ppm |
| 2016 | 1.94 ppm | 41 | 29 | ND - 6.08 ppm |
| 2017 | 2.00 ppm | 40 | 39 | ND - 6.70 ppm |
| 2018 | 2.04 ppm | 41 | 41 | 0.149 ppm - 6.74 ppm |
| 2019 | 2.52 ppm | 44 | 44 | 0.528 ppm - 7.20 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 |
|---|---|---|
| 2014-01-07 | 9590-004-0955 | 3.90 ppm |
| 2014-01-07 | 9590-005-0941 | 0.630 ppm |
| 2014-01-07 | 9590-008-0918 | 6.00 ppm |
| 2014-01-07 | 9590-009-0937 | 0.580 ppm |
| 2014-01-07 | 9590-010-0934 | 4.40 ppm |
| 2014-02-11 | 9590-003-0900 | 3.50 ppm |
| 2014-02-11 | 9590-005-0920 | 0.590 ppm |
| 2014-02-11 | 9590-009-0917 | 0.360 ppm |
| 2014-02-11 | 9590-010-0915 | 4.80 ppm |
| 2014-03-19 | 9590-005-0810 | 0.620 ppm |
| 2014-03-19 | 9590-009-0819 | 0.340 ppm |
| 2014-03-19 | 9590-010-0800 | 4.60 ppm |
| 2014-04-21 | 9590-004-1008 | 3.80 ppm |
| 2014-04-21 | 9590-005-1029 | 0.630 ppm |
| 2014-04-21 | 9590-008-1018 | 6.20 ppm |
| 2014-04-21 | 9590-009-1025 | 0.380 ppm |
| 2014-05-20 | 9590-003-0835 | 3.30 ppm |
| 2014-05-20 | 9590-005-0850 | 0.560 ppm |
| 2014-05-20 | 9590-009-0845 | 0.330 ppm |
| 2014-06-17 | 9590-005-1345 | 0.450 ppm |
| 2014-06-17 | 9590-009-1340 | 0.380 ppm |
| 2014-07-14 | 9590-004-1507 | 4.10 ppm |
| 2014-07-14 | 9590-005-1441 | 0.630 ppm |
| 2014-07-14 | 9590-008-1426 | 6.30 ppm |
| 2014-07-14 | 9590-009-1438 | 0.380 ppm |
| 2014-08-12 | 5701-003-1407 | 3.72 ppm |
| 2014-08-12 | 5701-005-1421 | 0.380 ppm |
| 2014-08-12 | 5701-009-1421 | 0.377 ppm |
| 2014-08-18 | 5810-005-0841 | 0.460 ppm |
| 2014-09-03 | 5701-009-1406 | 0.394 ppm |
| 2014-09-09 | 5701-005-0915 | 0.752 ppm |
| 2014-10-08 | 5701-004-1155 | 3.00 ppm |
| 2014-10-08 | 5701-005-1211 | 0.636 ppm |
| 2014-10-08 | 5701-008-1144 | 6.18 ppm |
| 2014-10-08 | 5701-009-1204 | 0.381 ppm |
| 2014-11-12 | 5701-003-1012 | 2.90 ppm |
| 2014-11-12 | 5701-005-1034 | 0.805 ppm |
| 2014-11-12 | 5701-009-1028 | 0.747 ppm |
| 2014-12-16 | 5701-005-0826 | 0.628 ppm |
| 2014-12-16 | 5701-009-0832 | 0.426 ppm |
| 2015-01-21 | 5701-004-1305 | 3.49 ppm |
| 2015-01-21 | 5701-005-1232 | 0.782 ppm |
| 2015-01-21 | 5701-008-1251 | 6.66 ppm |
| 2015-01-21 | 5701-009-1237 | 0.364 ppm |
| 2015-02-04 | 5701-003-0950 | 2.46 ppm |
| 2015-02-04 | 5701-005-1015 | 0.646 ppm |
| 2015-02-04 | 5701-009-1008 | 0.369 ppm |
| 2015-03-10 | 5701-005-1145 | 0.582 ppm |
| 2015-03-10 | 5701-009-1142 | 0.465 ppm |
| 2015-04-13 | 5701-004-1347 | 3.38 ppm |
| 2015-04-13 | 5701-005-1417 | 0.988 ppm |
| 2015-04-13 | 5701-008-1405 | 6.08 ppm |
| 2015-04-13 | 5701-009-1422 | 0.832 ppm |
| 2015-05-20 | 5701-003-0939 | 2.54 ppm |
| 2015-05-20 | 5701-005-0920 | 1.25 ppm |
| 2015-05-20 | 5701-009-0910 | 0.851 ppm |
| 2015-06-10 | 5701-005-1452 | 1.000 ppm |
| 2015-06-10 | 5701-009-1447 | 0.871 ppm |
| 2015-06-23 | 5806-014-1010 | 6.20 ppm |
| 2015-07-14 | 5701-004-0958 | 2.52 ppm |
| 2015-07-14 | 5701-005-0939 | 1.12 ppm |
| 2015-07-14 | 5701-008-0949 | 6.00 ppm |
| 2015-07-14 | 5701-009-0933 | 0.918 ppm |
| 2015-08-05 | 5701-003-0936 | 2.63 ppm |
| 2015-08-05 | 5701-005-0904 | 1.06 ppm |
| 2015-08-05 | 5701-009-0909 | 0.953 ppm |
| 2015-08-18 | 5810-005-1142 | 1.20 ppm |
| 2015-09-09 | 5701-005-1534 | 1.07 ppm |
| 2015-09-09 | 5701-009-1527 | 0.988 ppm |
| 2015-10-13 | 5701-004-1455 | 2.80 ppm |
| 2015-10-13 | 5701-005-1518 | 0.784 ppm |
| 2015-10-13 | 5701-008-1508 | 4.36 ppm |
| 2015-10-13 | 5701-009-1515 | 0.694 ppm |
| 2015-11-09 | 5701-003-1022 | 1.53 ppm |
| 2015-11-09 | 5701-005-1046 | 1.36 ppm |
| 2015-11-09 | 5701-009-1038 | 1.31 ppm |
| 2015-12-08 | 5701-005-1014 | 1.02 ppm |
| 2015-12-08 | 5701-009-1010 | 0.827 ppm |
| 2016-01-19 | 5701-004-0905 | 3.84 ppm |
| 2016-01-19 | 5701-005-0831 | 1.000 ppm |
| 2016-01-19 | 5701-008-0848 | 5.76 ppm |
| 2016-01-19 | 5701-009-0825 | 0.798 ppm |
| 2016-02-09 | 5701-003-0920 | 2.40 ppm |
| 2016-02-09 | 5701-005-0845 | 0.894 ppm |
| 2016-02-09 | 5701-009-0840 | 0.737 ppm |
| 2016-03-07 | 5701-005-1329 | 1.01 ppm |
| 2016-03-07 | 5701-009-1325 | 0.803 ppm |
| 2016-04-20 | 5701-004-1035 | 3.24 ppm |
| 2016-04-20 | 5701-005-1054 | 1.10 ppm |
| 2016-04-20 | 5701-008-1115 | 5.60 ppm |
| 2016-04-20 | 5810-008-1115 | 5.80 ppm |
| 2016-04-20 | 5701-009-1058 | 0.820 ppm |
| 2016-05-17 | 5701-003-0940 | 2.84 ppm |
| 2016-05-17 | 5701-005-0920 | 0.129 ppm |
| 2016-05-17 | 5701-009-0929 | ND |
| 2016-06-07 | 5701-005-1429 | 0.321 ppm |
| 2016-06-07 | 5701-009-1436 | ND |
| 2016-07-20 | 5701-004-1347 | 3.87 ppm |
| 2016-07-20 | 5810-004-1347 | 3.60 ppm |
| 2016-07-20 | 5701-005-1433 | ND |
| 2016-07-20 | 5701-008-1416 | 4.70 ppm |
| 2016-07-20 | 5701-009-1436 | ND |
| 2016-08-16 | 5701-003-1420 | 2.75 ppm |
| 2016-08-16 | 5701-005-1432 | ND |
| 2016-08-16 | 5701-009-1443 | ND |
| 2016-08-25 | 5810-003-1406 | 3.30 ppm |
| 2016-09-14 | 5810-014-1303 | 5.80 ppm |
| 2016-09-28 | 5701-005-1037 | 0.267 ppm |
| 2016-09-28 | 5701-009-1033 | ND |
| 2016-10-05 | 5701-004-0819 | 3.25 ppm |
| 2016-10-05 | 5701-005-1010 | ND |
| 2016-10-05 | 5701-008-0849 | 6.08 ppm |
| 2016-10-05 | 5701-009-1015 | ND |
| 2016-10-05 | 5701-014-0903 | 5.20 ppm |
| 2016-11-14 | 5701-003-1414 | 3.20 ppm |
| 2016-11-14 | 5701-005-1355 | 0.278 ppm |
| 2016-11-14 | 5701-009-1406 | ND |
| 2016-12-14 | 5701-005-1248 | ND |
| 2016-12-14 | 5701-009-1244 | ND |
| 2017-01-10 | 5701-004-0832 | 3.45 ppm |
| 2017-01-10 | 5701-005-0857 | 0.120 ppm |
| 2017-01-10 | 5701-008-0846 | 6.70 ppm |
| 2017-01-10 | 5701-009-0904 | ND |
| 2017-02-07 | 5701-003-1400 | 2.11 ppm |
| 2017-02-07 | 5701-005-1417 | 0.158 ppm |
| 2017-02-07 | 5701-009-1426 | 0.1000 ppm |
| 2017-02-08 | 5701-014-1423 | 6.50 ppm |
| 2017-03-07 | 5701-005-0836 | 0.360 ppm |
| 2017-03-07 | 5701-009-0830 | 0.102 ppm |
| 2017-04-05 | 5701-004-1222 | 3.52 ppm |
| 2017-04-05 | 5701-005-1440 | 0.272 ppm |
| 2017-04-05 | 5701-008-1239 | 6.01 ppm |
| 2017-04-05 | 5701-009-1448 | 0.108 ppm |
| 2017-04-05 | 5701-014-1247 | 6.27 ppm |
| 2017-05-08 | 5701-003-0909 | 3.27 ppm |
| 2017-05-08 | 5701-005-0840 | 0.273 ppm |
| 2017-05-08 | 5701-009-0845 | 0.112 ppm |
| 2017-06-07 | 5701-005-1436 | 0.285 ppm |
| 2017-06-07 | 5701-009-1442 | 0.124 ppm |
| 2017-07-05 | 5701-004-1310 | 3.30 ppm |
| 2017-07-05 | 5701-005-1405 | 0.281 ppm |
| 2017-07-05 | 5701-008-1345 | 5.61 ppm |
| 2017-07-05 | 5701-009-1412 | 0.120 ppm |
| 2017-07-05 | 5701-014-1355 | 6.05 ppm |
| 2017-08-15 | 5701-003-1336 | 3.20 ppm |
| 2017-08-15 | 5701-005-1305 | 0.220 ppm |
| 2017-08-15 | 5701-009-1310 | 0.135 ppm |
| 2017-09-06 | 5701-005-1416 | 0.535 ppm |
| 2017-09-06 | 5701-009-1420 | 0.184 ppm |
| 2017-10-24 | 5701-004-1325 | 3.50 ppm |
| 2017-10-24 | 5701-005-1426 | 0.494 ppm |
| 2017-10-24 | 5701-008-1352 | 5.79 ppm |
| 2017-10-24 | 5701-009-1425 | 0.132 ppm |
| 2017-10-24 | 5701-014-1406 | 6.34 ppm |
| 2017-11-14 | 5701-003-0927 | 3.10 ppm |
| 2017-11-14 | 5701-005-0910 | 0.495 ppm |
| 2017-11-14 | 5701-009-0916 | 0.150 ppm |
| 2017-12-06 | 5701-005-0809 | 0.248 ppm |
| 2017-12-06 | 5701-009-0815 | 0.124 ppm |
| 2018-01-16 | 5701-004-1356 | 3.52 ppm |
| 2018-01-16 | 5701-005-1438 | 0.244 ppm |
| 2018-01-16 | 5701-008-1430 | 6.60 ppm |
| 2018-01-16 | 5701-009-1430 | 0.149 ppm |
| 2018-01-16 | 5701-014-1412 | 6.42 ppm |
| 2018-02-20 | 5701-003-1347 | 2.99 ppm |
| 2018-02-20 | 5701-005-1420 | 0.175 ppm |
| 2018-02-20 | 5701-009-1425 | 0.173 ppm |
| 2018-03-06 | 5701-005-1425 | 0.384 ppm |
| 2018-03-06 | 5701-009-1430 | 0.155 ppm |
| 2018-04-04 | 5701-003-1445 | 3.11 ppm |
| 2018-04-04 | 5701-004-1432 | 2.92 ppm |
| 2018-04-04 | 5701-005-1415 | 0.459 ppm |
| 2018-04-04 | 5701-008-1350 | 6.00 ppm |
| 2018-04-04 | 5701-009-1422 | 0.178 ppm |
| 2018-04-04 | 5701-014-1400 | 6.59 ppm |
| 2018-05-02 | 5701-005-1345 | 0.421 ppm |
| 2018-05-02 | 5701-009-1355 | 0.178 ppm |
| 2018-06-06 | 5701-005-1420 | 0.389 ppm |
| 2018-06-06 | 5701-009-1425 | 0.183 ppm |
| 2018-07-25 | 5701-003-1353 | 2.95 ppm |
| 2018-07-25 | 5701-004-1342 | 3.78 ppm |
| 2018-07-25 | 5701-005-1430 | 0.388 ppm |
| 2018-07-25 | 5701-008-1407 | 5.66 ppm |
| 2018-07-25 | 5701-009-1435 | 0.181 ppm |
| 2018-07-25 | 5701-014-1420 | 6.74 ppm |
| 2018-08-15 | 5701-005-1425 | 0.385 ppm |
| 2018-08-15 | 5701-009-1432 | 0.223 ppm |
| 2018-09-05 | 5701-005-1440 | 0.366 ppm |
| 2018-09-05 | 5701-009-1450 | 0.166 ppm |
| 2018-10-03 | 5701-003-1342 | 3.07 ppm |
| 2018-10-03 | 5701-004-1334 | 3.42 ppm |
| 2018-10-03 | 5701-005-1422 | 0.449 ppm |
| 2018-10-03 | 5701-008-1352 | 5.99 ppm |
| 2018-10-03 | 5701-009-1430 | 0.190 ppm |
| 2018-10-03 | 5701-014-1410 | 6.66 ppm |
| 2018-10-10 | 5810-005-0950 | 0.440 ppm |
| 2018-11-07 | 5701-005-1405 | 0.524 ppm |
| 2018-11-07 | 5701-009-1410 | 0.296 ppm |
| 2018-12-05 | 5701-005-1430 | 0.438 ppm |
| 2018-12-05 | 5701-009-1440 | 0.267 ppm |
| 2019-01-16 | 5701-003-1115 | 3.00 ppm |
| 2019-01-16 | 5701-004-1105 | 3.67 ppm |
| 2019-01-16 | 5701-005-1020 | 0.710 ppm |
| 2019-01-16 | 5701-008-1000 | 6.88 ppm |
| 2019-01-16 | 5701-009-1025 | 0.528 ppm |
| 2019-01-16 | 5701-014-1010 | 7.06 ppm |
| 2019-02-06 | 5701-005-0934 | 0.693 ppm |
| 2019-02-06 | 5701-009-0926 | 0.541 ppm |
| 2019-03-12 | 5701-005-1435 | 0.619 ppm |
| 2019-03-12 | 5701-009-1440 | 0.541 ppm |
| 2019-04-10 | 5810-003-1407 | 3.10 ppm |
| 2019-04-10 | 5810-004-1400 | 3.70 ppm |
| 2019-04-10 | 5810-005-1438 | 0.800 ppm |
| 2019-04-10 | 5810-008-1417 | 6.20 ppm |
| 2019-04-10 | 5810-009-1443 | 0.680 ppm |
| 2019-04-10 | 5810-014-1430 | 7.20 ppm |
| 2019-04-23 | 5810-008-1310 | 6.00 ppm |
| 2019-05-15 | 5701-005-1330 | 0.852 ppm |
| 2019-05-15 | 5701-009-1336 | 0.727 ppm |
| 2019-06-05 | 5701-005-1435 | 0.886 ppm |
| 2019-06-05 | 5701-009-1440 | 0.710 ppm |
| 2019-07-01 | 5701-003-1009 | 2.55 ppm |
| 2019-07-01 | 5701-004-1000 | 3.67 ppm |
| 2019-07-01 | 5701-005-1058 | 0.916 ppm |
| 2019-07-01 | 5701-008-1018 | 6.66 ppm |
| 2019-07-01 | 5701-009-1102 | 0.754 ppm |
| 2019-07-01 | 5701-014-1025 | 7.14 ppm |
| 2019-07-22 | 5810-004-1400 | 3.80 ppm |
| 2019-08-20 | 5810-003-1500 | 2.20 ppm |
| 2019-08-22 | 5701-005-1444 | 0.812 ppm |
| 2019-08-22 | 5701-009-1440 | 0.724 ppm |
| 2019-09-11 | 5701-005-1330 | 0.797 ppm |
| 2019-09-11 | 5701-009-1336 | 0.714 ppm |
| 2019-10-09 | 5701-003-0910 | 2.95 ppm |
| 2019-10-09 | 5701-004-0904 | 3.67 ppm |
| 2019-10-09 | 5701-005-0822 | 0.865 ppm |
| 2019-10-09 | 5701-008-0856 | 6.02 ppm |
| 2019-10-09 | 5701-009-0827 | 0.734 ppm |
| 2019-10-09 | 5701-014-0845 | 6.70 ppm |
| 2019-10-16 | 5810-005-1434 | 0.790 ppm |
| 2019-11-13 | 5701-005-1430 | 0.877 ppm |
| 2019-11-13 | 5701-009-1431 | 0.841 ppm |
| 2019-12-04 | 5701-005-0805 | 0.918 ppm |
| 2019-12-04 | 5701-009-0807 | 0.717 ppm |