Information from two sources:
Without County or EPA ID No. NATURAL FLUORIDE CONTENT OF COMMUNITY WATER SUPPLIES 1969, a hard copy publication by the U.S. Department of Health, Education, and Welfare, Public Health Service, National Institutes of Health.
With County & EPA ID No. Fluoridation Census 1992, published in 1993 by the Centers for Disease Control & Prevention, Division of Oral Health.
• It is not known if the water systems listed below are all still active
• The state Water System ID is the same as EPA’s preceded with the state’s initial. For example, North Carolina would be NC0000000
EPA ID No.
Natural Level of Fluoride (ppm)
A Milligram per Liter (mg/L) is the same as Part Per Million (ppm)
Not all water fluoride levels are included in the Fluoridation Census 1992
|North Carolina||Tabor City||2,800||0.7|
|North Carolina||Goose Creek||Swain||na||0||1.7|
|North Carolina||Rich Square||1,200||2.1|
See also, Fluoridated School Drinking Water Systems. Certain elementary schools in North Carolina had their drinking water fluoridated at 4.5 ppm from early 1970s to the 1990s.
Please email Fluoride Action Network if you have information to share on levels of naturally occurring fluoride in U.S. drinking water or other bodies of water.
Percentage of State Population served by Public Water Systems that Receive Fluoridated Water