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2006

These statistics were prepared using water system data reported by states to the CDC Water Fluoridation Reporting System as of December 31, 2006, and the U.S. Census Bureau estimates as reported in Bailey W, Duchon K, Barker L, Maas W. Populations receiving optimally fluoridated public drinking water – United States, 1992–2006. MMWR 2008; 57(27):737–741.
National Water Fluoridation Statistics

Total U.S. population, personsa 299,398,484
U.S. population on public water systems, personsb 262,690,043
Total U.S. population on fluoridated drinking water systems, personsb 184,028,038
Percentage of U.S. population receiving fluoridated waterc 61.5%
Percentage of U.S. population on public water systems receiving
fluoridated waterd
69.2%
Total number of community water systems (CWS) in United Statesb 53,429
Number of CWS providing fluoridated waterb 16,412
Number of CWS adjusting fluorideb 6,368
Number of CWS consecutive to systems with optimal fluoride levelsb 6,705
Number of CWS with naturally occurring fluoride at or above optimal levelsb 3,339
Population served by CWS with naturally occurring fluorideb 8,078,890

 

State Fluoridation Percentage Calculations and States Ranked by Fluoridation Percentage

State Persons receiving fluoridated water Persons served by CWS % Rank
United States 184,028,038 265,794,252 69.2%
Alabamae 3,814,295 4,599,030 82.9% 20
Alaska 308,801 519,379 59.5% 35
Arizona 3,147,245 5,611,581 56.1% 38
Arkansas 1,648,317 2,561,312 64.4% 33
Californiae,f 9,881,390 36,457,549 27.1% 48
Colorado 3,085,319 4,190,698 73.6% Tied for 26
Connecticut 2,393,487 2,691,412 88.9% 17
Delaware 603,207 819,176 73.6% Tied for 26
District of Columbiae 595,000 595,000 100%
Florida 13,006,128 16,729,803 77.7% 24
Georgiae 8,974,302 9,393,941 95.8% 5
Hawaiie,f 107,684 1,285,498 8.4% 50
Idaho 316,350 1,011,949 31.3% Tied for 45
Illinois 11,355,747 11,484,994 98.9% 2
Indiana 4,327,916 4,550,057 95.1% 6
Iowa 2,363,277 2,558,575 92.4% 12
Kansas 1,669,657 2,563,505 65.1% 32
Kentuckye 4,199,519 4,206,074 99.8% 1
Louisianae 1,731,807 4,287,768 40.4% 43
Maine 501,290 630,136 79.6% 22
Maryland 4,549,055 4,847,653 93.8% 10
Massachusettse 3,802,732 6,437,193 59.1% 36
Michigan 6,664,706 7,335,365 90.9% 14
Minnesota 3,905,754 3,956,659 98.7% 3
Mississippie 1,480,601 2,910,540 50.9% 41
Missouri 3,928,100 4,928,689 79.7% 21
Montana 248,850 794,563 31.3% Tied for 45
Nebraska 991,292 1,420,624 69.8% 31
Nevada 1,744,984 2,422,152 72.0% 30
New Hampshire 354,637 832,656 42.6% 42
New Jersey 1,771,324 7,839,608 22.6% 49
New Mexico 1,207,034 1,567,857 77.0% 25
New York 12,733,582 17,471,590 72.9% 29
North Carolina 5,689,906 6,498,294 87.6% 18
North Dakota 552,785 574,346 96.2% 4
Ohio 8,948,975 10,021,630 89.3% 16
Oklahoma 2,493,521 3,392,725 73.5% 28
Oregon 839,727 3,069,204 27.4% 47
Pennsylvania 5,610,873 10,390,234 54.0% 40
Rhode Island 826,863 977,261 84.6% 19
South Carolina 3,355,873 3,545,617 94.6% 9
South Dakota 657,022 691,333 95.0% Tied for 7
Tennessee 4,889,987 5,220,410 93.7% 11
Texas 16,979,975 21,731,824 78.1% 23
Utah 1,216,980 2,242,897 54.3% 39
Vermont 310,953 529,441 58.7% 37
Virginia 5,830,328 6,135,847 95.0% Tied for 7
Washington 3,542,948 5,628,782 62.9% 34
West Virginia 1,247,301 1,360,193 91.7% 13
Wisconsin 3,471,706 3,868,775 89.7% 15
Wyoming 162,396 446,323 36.4% 44

Footnotes

a. Annual Population Estimates and Estimated Components of Population Change for the United States and States: April 1, 2000 to July 1, 2006. Source: Population Estimates Program, U.S. Bureau of the Census. Internet Release date: December 22, 2006.

b. Reported in CDC Water Fluoridation Reporting System (WRFS).

c. Fluoridated population divided by total population.

d. Fluoridated population divided by population served by community water systems.

e. Population served by CWS exceeded the U.S. Census state population estimate; number of persons was reduced by the ratio of the population estimate to the CWS population estimate.

f . Complete data were not available from WFRS; state provided additional information.

Additional Resources

More detail on U.S. Census Bureau estimates can be found at Calculating Fluoridation Statistics

Historical fluoridation statistics are available at Fluoridation Statistics

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