Fluoride Action Network

U.S. Water Systems with High F Levels

Database of drinking water systems with high levels of naturally occurring fluoride; searchable by state.


The Fluoride Action Network (FAN) has been unable to obtain the naturally occurring levels of fluoride in Hawaii’s drinking water.

Of particular concern is the level of fluoride in drinking water due to three active volcanoes in the state. On Hawaii Island you’ll find Maunaloa and Kilauea in Hawaii Volcanoes National Park. Maunaloa last erupted in 1984 and Kilauea has been continuously erupting since 1983. Loihi is located underwater off the southern coast of Hawaii’s Big Island (reference).

The Centers for Disease Control & Prevention’s (CDC) report titled Fluoridation Census 1992 accounts for the majority of data in FAN’s list of states for Naturally Occurring Fluoride Levels in U.S. Drinking Water. Unfortunately, the CDC’s 1992 Census did not list the natural levels of fluoride for Alaska, Arkansas, Hawaii, Kentucky, Maine, New York, Pennsylvania, Rhode Island, Tennessee, Vermont, and West Virginia.

FAN has tried, without success, to obtain the levels of naturally occurring levels of fluoride by state On EPA’s website, it states: “If you want the most up-to-date information about the current fluoride level in your water, contact your local water supplier directly.”

FAN will continue to seek the information for Hawaii and will update this page when we have it.

The Oral Health Division of the CDC publishes an online list of fluoride levels in community water. This publication, called My Water’s Fluoride (MWF), notes that not all states report fluoride levels to them as the MWF is a “voluntary public disclosure web site. States choose whether they will provide their water fluoridation information to MWF. Some states choose to use other ways to notify the public about their water fluoridation program, such as a state web site.”

• The 23 states than do not provide info to MWF: AZ, CA, GA, HI, ID, MD, MO, MT, NV, NJ, NM, NY, NC, OH, OK, OR, PA, SD, UT, VA, WA, WI, WY


Please email Fluoride Action Network if you have information to share on levels of naturally occurring fluoride in Hawaii’s drinking water or soil or air.

Percentage of State Population served by Public Water Systems that Receive Fluoridated Water

State 2014 2012 2006 2000 1992
Hawaii 11.7% 10.8% 8.4% 9%

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