Fluoride
Cleveland Public Water System
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.
276
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 |
|---|---|---|---|---|
| 2014 | 0.982 ppm | 48 | 48 | 0.830 ppm - 1.26 ppm |
| 2015 | 1.04 ppm | 48 | 48 | 0.840 ppm - 1.28 ppm |
| 2016 | 0.968 ppm | 44 | 44 | 0.860 ppm - 1.38 ppm |
| 2017 | 0.982 ppm | 48 | 48 | 0.850 ppm - 1.30 ppm |
| 2018 | 0.953 ppm | 48 | 48 | 0.820 ppm - 1.26 ppm |
| 2019 | 0.934 ppm | 40 | 40 | 0.820 ppm - 1.10 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 | 2114010605 | 0.900 ppm |
| 2014-01-06 | 3114010601 | 0.920 ppm |
| 2014-01-06 | 4114010613 | 0.980 ppm |
| 2014-01-06 | 5114010607 | 0.850 ppm |
| 2014-02-28 | 2114022805 | 1.26 ppm |
| 2014-02-28 | 3114022801 | 0.950 ppm |
| 2014-02-28 | 4114022813 | 1.05 ppm |
| 2014-02-28 | 5114022807 | 1.24 ppm |
| 2014-03-21 | 2114032105 | 1.08 ppm |
| 2014-03-21 | 3114032101 | 0.880 ppm |
| 2014-03-21 | 4114032113 | 0.970 ppm |
| 2014-03-21 | 5114032107 | 0.980 ppm |
| 2014-04-02 | 2114040205 | 1.07 ppm |
| 2014-04-02 | 3114040201 | 0.880 ppm |
| 2014-04-02 | 4114040213 | 0.900 ppm |
| 2014-04-02 | 5114040207 | 0.990 ppm |
| 2014-05-12 | 2114051205 | 1.08 ppm |
| 2014-05-12 | 3114051201 | 0.840 ppm |
| 2014-05-12 | 4114051213 | 1.01 ppm |
| 2014-05-12 | 5114051207 | 0.920 ppm |
| 2014-06-13 | 2114061305 | 0.990 ppm |
| 2014-06-13 | 3114061301 | 0.860 ppm |
| 2014-06-13 | 4114061313 | 1.000 ppm |
| 2014-06-13 | 5114061307 | 0.920 ppm |
| 2014-07-11 | 2114071105 | 1.01 ppm |
| 2014-07-11 | 3114071101 | 0.870 ppm |
| 2014-07-11 | 4114071113 | 0.980 ppm |
| 2014-07-11 | 5114071107 | 0.920 ppm |
| 2014-08-29 | 2114082905 | 1.07 ppm |
| 2014-08-29 | 3114082901 | 1.08 ppm |
| 2014-08-29 | 4114082913 | 1.09 ppm |
| 2014-08-29 | 5114082907 | 1.01 ppm |
| 2014-09-03 | 2114090305 | 1.08 ppm |
| 2014-09-03 | 3114090301 | 0.940 ppm |
| 2014-09-03 | 4114090313 | 1.12 ppm |
| 2014-09-03 | 5114090307 | 1.02 ppm |
| 2014-10-17 | 2114101705 | 0.940 ppm |
| 2014-10-17 | 3114101701 | 0.900 ppm |
| 2014-10-17 | 4114101713 | 0.830 ppm |
| 2014-10-17 | 5114101707 | 0.970 ppm |
| 2014-11-07 | 2114110705 | 0.880 ppm |
| 2014-11-07 | 3114110701 | 0.830 ppm |
| 2014-11-07 | 4114110713 | 0.990 ppm |
| 2014-11-07 | 5114110707 | 0.860 ppm |
| 2014-12-05 | 2114120505 | 1.06 ppm |
| 2014-12-05 | 3114120501 | 0.950 ppm |
| 2014-12-05 | 4114120513 | 1.15 ppm |
| 2014-12-05 | 5114120507 | 1.08 ppm |
| 2015-01-21 | 2115012105 | 1.18 ppm |
| 2015-01-21 | 3115012101 | 1.10 ppm |
| 2015-01-21 | 4115012113 | 1.17 ppm |
| 2015-01-21 | 5115012107 | 1.28 ppm |
| 2015-02-06 | 2115020605 | 1.24 ppm |
| 2015-02-06 | 3115020601 | 1.08 ppm |
| 2015-02-06 | 4115020613 | 1.27 ppm |
| 2015-02-06 | 5115020607 | 1.26 ppm |
| 2015-03-16 | 2115031605 | 1.26 ppm |
| 2015-03-16 | 3115031601 | 1.08 ppm |
| 2015-03-16 | 4115031613 | 1.000 ppm |
| 2015-03-16 | 5115031607 | 1.18 ppm |
| 2015-04-27 | 2115042705 | 1.02 ppm |
| 2015-04-27 | 3115042701 | 1.08 ppm |
| 2015-04-27 | 4115042713 | 1.06 ppm |
| 2015-04-27 | 5115042707 | 1.06 ppm |
| 2015-05-04 | 2115050405 | 1.000 ppm |
| 2015-05-04 | 3115050401 | 0.910 ppm |
| 2015-05-04 | 4115050413 | 1.09 ppm |
| 2015-05-04 | 5115050407 | 1.10 ppm |
| 2015-06-01 | 2115060105 | 0.960 ppm |
| 2015-06-01 | 3115060101 | 0.880 ppm |
| 2015-06-01 | 4115060113 | 1.02 ppm |
| 2015-06-01 | 5115060107 | 0.890 ppm |
| 2015-07-03 | 2115070305 | 0.960 ppm |
| 2015-07-03 | 3115070301 | 0.920 ppm |
| 2015-07-03 | 4115070313 | 0.880 ppm |
| 2015-07-03 | 5115070307 | 0.950 ppm |
| 2015-08-28 | 2115082805 | 0.970 ppm |
| 2015-08-28 | 3115082801 | 0.930 ppm |
| 2015-08-28 | 4115082813 | 1.06 ppm |
| 2015-08-28 | 5115082807 | 1.07 ppm |
| 2015-09-02 | 2115090205 | 0.920 ppm |
| 2015-09-02 | 3115090201 | 0.930 ppm |
| 2015-09-02 | 4115090213 | 0.980 ppm |
| 2015-09-02 | 5115090207 | 1.08 ppm |
| 2015-10-10 | 2115101005 | 0.980 ppm |
| 2015-10-10 | 3115101001 | 0.920 ppm |
| 2015-10-10 | 4115101013 | 1.22 ppm |
| 2015-10-10 | 5115101007 | 0.980 ppm |
| 2015-11-12 | 2115111205 | 0.980 ppm |
| 2015-11-12 | 3115111201 | 0.950 ppm |
| 2015-11-12 | 4115111213 | 1.22 ppm |
| 2015-11-12 | 5115111207 | 1.07 ppm |
| 2015-12-15 | 2115121505 | 0.840 ppm |
| 2015-12-15 | 3115121501 | 0.900 ppm |
| 2015-12-15 | 4115121513 | 1.10 ppm |
| 2015-12-15 | 5115121507 | 0.990 ppm |
| 2016-01-04 | 2116010405 | 0.950 ppm |
| 2016-01-04 | 3116010401 | 0.880 ppm |
| 2016-01-04 | 4116010413 | 0.950 ppm |
| 2016-01-04 | 5116010407 | 0.950 ppm |
| 2016-03-30 | 2116033005 | 1.000 ppm |
| 2016-03-30 | 3116033001 | 0.920 ppm |
| 2016-03-30 | 4116033013 | 0.920 ppm |
| 2016-03-30 | 5116033007 | 1.000 ppm |
| 2016-04-29 | 2116042905 | 1.01 ppm |
| 2016-04-29 | 3116042901 | 0.940 ppm |
| 2016-04-29 | 4116042913 | 0.970 ppm |
| 2016-04-29 | 5116042907 | 0.980 ppm |
| 2016-05-02 | 2116050205 | 1.02 ppm |
| 2016-05-02 | 3116050201 | 0.920 ppm |
| 2016-05-02 | 4116050213 | 0.990 ppm |
| 2016-05-02 | 5116050207 | 0.950 ppm |
| 2016-06-03 | 2116060305 | 1.02 ppm |
| 2016-06-03 | 3116060301 | 0.880 ppm |
| 2016-06-03 | 4116060313 | 1.07 ppm |
| 2016-06-03 | 5116060307 | 0.890 ppm |
| 2016-07-08 | 2116070805 | 0.990 ppm |
| 2016-07-08 | 3116070801 | 0.880 ppm |
| 2016-07-08 | 4116070813 | 1.10 ppm |
| 2016-07-08 | 5116070807 | 0.880 ppm |
| 2016-08-10 | 2116081005 | 1.000 ppm |
| 2016-08-10 | 3116081001 | 0.920 ppm |
| 2016-08-10 | 4116081013 | 1.09 ppm |
| 2016-08-10 | 5116081007 | 0.950 ppm |
| 2016-09-16 | 2116091605 | 1.02 ppm |
| 2016-09-16 | 3116091601 | 0.920 ppm |
| 2016-09-16 | 4116091613 | 1.05 ppm |
| 2016-09-16 | 5116091607 | 0.920 ppm |
| 2016-10-03 | 2116100305 | 0.910 ppm |
| 2016-10-03 | 3116100301 | 0.870 ppm |
| 2016-10-03 | 4116100313 | 1.05 ppm |
| 2016-10-03 | 5116100307 | 0.860 ppm |
| 2016-11-02 | 2116110205 | 0.960 ppm |
| 2016-11-02 | 3116110201 | 0.900 ppm |
| 2016-11-02 | 4116110213 | 1.04 ppm |
| 2016-11-02 | 5116110207 | 0.860 ppm |
| 2016-12-12 | 2116121205 | 1.000 ppm |
| 2016-12-12 | 3116121201 | 0.900 ppm |
| 2016-12-12 | 4116121213 | 1.38 ppm |
| 2016-12-12 | 5116121207 | 0.920 ppm |
| 2017-01-04 | 2117010405 | 0.990 ppm |
| 2017-01-04 | 3117010401 | 0.890 ppm |
| 2017-01-04 | 4117010413 | 1.02 ppm |
| 2017-01-04 | 5117010407 | 1.01 ppm |
| 2017-02-06 | 2117020605 | 1.05 ppm |
| 2017-02-06 | 3117020601 | 0.900 ppm |
| 2017-02-06 | 4117020613 | 1.04 ppm |
| 2017-02-06 | 5117020607 | 0.860 ppm |
| 2017-03-31 | 2117033105 | 0.850 ppm |
| 2017-03-31 | 3117033101 | 0.900 ppm |
| 2017-03-31 | 4117033113 | 1.30 ppm |
| 2017-03-31 | 5117033107 | 0.860 ppm |
| 2017-04-26 | 2117042605 | 0.930 ppm |
| 2017-04-26 | 3117042601 | 0.900 ppm |
| 2017-04-26 | 4117042613 | 1.09 ppm |
| 2017-04-26 | 5117042607 | 0.920 ppm |
| 2017-05-31 | 2117053105 | 0.920 ppm |
| 2017-05-31 | 3117053101 | 0.970 ppm |
| 2017-05-31 | 4117053113 | 1.05 ppm |
| 2017-05-31 | 5117053107 | 0.920 ppm |
| 2017-06-02 | 2117060205 | 0.900 ppm |
| 2017-06-02 | 3117060201 | 0.970 ppm |
| 2017-06-02 | 4117060213 | 1.04 ppm |
| 2017-06-02 | 5117060207 | 0.910 ppm |
| 2017-07-03 | 2117070305 | 0.880 ppm |
| 2017-07-03 | 3117070301 | 0.900 ppm |
| 2017-07-03 | 4117070313 | 1.03 ppm |
| 2017-07-03 | 5117070307 | 0.940 ppm |
| 2017-08-30 | 2117083005 | 0.920 ppm |
| 2017-08-30 | 3117083001 | 0.920 ppm |
| 2017-08-30 | 4117083013 | 1.10 ppm |
| 2017-08-30 | 5117083007 | 1.000 ppm |
| 2017-09-01 | 2117090105 | 0.910 ppm |
| 2017-09-01 | 3117090101 | 0.930 ppm |
| 2017-09-01 | 4117090113 | 1.20 ppm |
| 2017-09-01 | 5117090107 | 1.000 ppm |
| 2017-10-04 | 2117100405 | 1.10 ppm |
| 2017-10-04 | 3117100401 | 0.910 ppm |
| 2017-10-04 | 4117100413 | 1.10 ppm |
| 2017-10-04 | 5117100407 | 1.10 ppm |
| 2017-11-17 | 2117111705 | 0.970 ppm |
| 2017-11-17 | 3117111701 | 0.930 ppm |
| 2017-11-17 | 4117111713 | 1.22 ppm |
| 2017-11-17 | 5117111707 | 1.000 ppm |
| 2017-12-13 | 2117121305 | 1.08 ppm |
| 2017-12-13 | 3117121301 | 0.910 ppm |
| 2017-12-13 | 4117121313 | 0.890 ppm |
| 2017-12-13 | 5117121307 | 1.01 ppm |
| 2018-01-03 | 2118010305 | 1.26 ppm |
| 2018-01-03 | 3118010301 | 1.12 ppm |
| 2018-01-03 | 4118010313 | 1.19 ppm |
| 2018-01-03 | 5118010307 | 1.22 ppm |
| 2018-02-07 | 2118020705 | 0.880 ppm |
| 2018-02-07 | 3118020701 | 0.980 ppm |
| 2018-02-07 | 4118020713 | 0.910 ppm |
| 2018-02-07 | 5118020707 | 0.970 ppm |
| 2018-03-02 | 2118030205 | 0.980 ppm |
| 2018-03-02 | 3118030201 | 0.990 ppm |
| 2018-03-02 | 4118030213 | 1.04 ppm |
| 2018-03-02 | 5118030207 | 0.960 ppm |
| 2018-04-13 | 2118041305 | 1.02 ppm |
| 2018-04-13 | 3118041301 | 0.930 ppm |
| 2018-04-13 | 4118041313 | 1.11 ppm |
| 2018-04-13 | 5118041307 | 1.03 ppm |
| 2018-05-31 | 2118053105 | 0.820 ppm |
| 2018-05-31 | 3118053101 | 0.830 ppm |
| 2018-05-31 | 4118053113 | 1.18 ppm |
| 2018-05-31 | 5118053107 | 0.920 ppm |
| 2018-06-27 | 2118062705 | 0.910 ppm |
| 2018-06-27 | 3118062701 | 0.850 ppm |
| 2018-06-27 | 4118062713 | 0.940 ppm |
| 2018-06-27 | 5118062707 | 0.880 ppm |
| 2018-07-25 | 2118072505 | 0.900 ppm |
| 2018-07-25 | 3118072501 | 0.870 ppm |
| 2018-07-25 | 4118072513 | 0.900 ppm |
| 2018-07-25 | 5118072507 | 0.880 ppm |
| 2018-08-02 | 2118080205 | 0.910 ppm |
| 2018-08-02 | 3118080201 | 0.860 ppm |
| 2018-08-02 | 4118080213 | 0.920 ppm |
| 2018-08-02 | 5118080207 | 0.890 ppm |
| 2018-09-19 | 2118091905 | 0.960 ppm |
| 2018-09-19 | 3118091901 | 0.920 ppm |
| 2018-09-19 | 4118091913 | 0.980 ppm |
| 2018-09-19 | 5118091907 | 0.900 ppm |
| 2018-10-01 | 2118100105 | 0.890 ppm |
| 2018-10-01 | 3118100101 | 0.880 ppm |
| 2018-10-01 | 4118100113 | 1.01 ppm |
| 2018-10-01 | 5118100107 | 0.950 ppm |
| 2018-11-02 | 2118110205 | 1.000 ppm |
| 2018-11-02 | 3118110201 | 0.860 ppm |
| 2018-11-02 | 4118110213 | 0.890 ppm |
| 2018-11-02 | 5118110207 | 0.910 ppm |
| 2018-12-07 | 2118120705 | 0.940 ppm |
| 2018-12-07 | 3118120701 | 0.850 ppm |
| 2018-12-07 | 4118120713 | 0.850 ppm |
| 2018-12-07 | 5118120707 | 0.880 ppm |
| 2019-01-12 | 2119011205 | 0.930 ppm |
| 2019-01-12 | 3119011201 | 0.830 ppm |
| 2019-01-12 | 4119011213 | 0.910 ppm |
| 2019-01-12 | 5119011207 | 0.920 ppm |
| 2019-02-06 | 2119020605 | 1.000 ppm |
| 2019-02-06 | 3119020601 | 0.910 ppm |
| 2019-02-06 | 4119020613 | 0.980 ppm |
| 2019-02-06 | 5119020607 | 0.870 ppm |
| 2019-03-14 | 2119031405 | 0.850 ppm |
| 2019-03-14 | 3119031401 | 0.940 ppm |
| 2019-03-14 | 4119031413 | 0.960 ppm |
| 2019-03-14 | 5119031407 | 0.940 ppm |
| 2019-04-10 | 2119041005 | 0.950 ppm |
| 2019-04-10 | 3119041001 | 0.930 ppm |
| 2019-04-10 | 4119041013 | 1.06 ppm |
| 2019-04-10 | 5119041007 | 0.820 ppm |
| 2019-05-06 | 2119060605 | 0.920 ppm |
| 2019-05-06 | 3119060601 | 0.840 ppm |
| 2019-05-06 | 4119060613 | 0.930 ppm |
| 2019-05-06 | 5119060607 | 0.880 ppm |
| 2019-06-19 | 2119061905 | 0.980 ppm |
| 2019-06-19 | 3119061901 | 0.870 ppm |
| 2019-06-19 | 4119061913 | 0.900 ppm |
| 2019-06-19 | 5119061907 | 0.920 ppm |
| 2019-07-22 | 2119072205 | 0.900 ppm |
| 2019-07-22 | 3119072201 | 0.860 ppm |
| 2019-07-22 | 4119072213 | 0.940 ppm |
| 2019-07-22 | 5119072207 | 0.860 ppm |
| 2019-08-26 | 2119082605 | 1.10 ppm |
| 2019-08-26 | 3119082601 | 0.970 ppm |
| 2019-08-26 | 4119082613 | 1.07 ppm |
| 2019-08-26 | 5119082607 | 0.930 ppm |
| 2019-09-23 | 2119092305 | 1.000 ppm |
| 2019-09-23 | 3119092301 | 0.900 ppm |
| 2019-09-23 | 4119092313 | 1.03 ppm |
| 2019-09-23 | 5119092307 | 0.980 ppm |
| 2019-10-14 | 2119101405 | 1.000 ppm |
| 2019-10-14 | 3119101401 | 0.880 ppm |
| 2019-10-14 | 4119101413 | 0.960 ppm |
| 2019-10-14 | 5119101407 | 0.930 ppm |