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2006 Water Fluoridation Statistics

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
  State Rank
United States 69.2 184,028,038 265,794,252   Kentucky 1
Alabamae 82.9 3,814,295 4,599,030   Illinois 2
Alaska 59.5 308,801 519,379   Minnesota 3
Arizona 56.1 3,147,245 5,611,581   North Dakota 4
Arkansas 64.4 1,648,317 2,561,312   Georgia 5
Californiae,f 27.1 9,881,390 36,457,549   Indiana 6
Colorado 73.6 3,085,319 4,190,698   South Dakota Tied for
 7
Connecticut 88.9 2,393,487 2,691,412   Virginia Tied for
7
Delaware 73.6 603,207 819,176   South Carolina 9
District of Columbiae 100.0 581,530 581,530   Maryland 10
Florida 77.7 13,006,128 16,729,803   Tennessee 11
Georgiae 95.8 8,974,302 9,393,941   Iowa 12
Hawaiie,f 8.4 107,684 1,285,498   West Virginia 13
Idaho 31.3 316,350 1,011,949   Michigan 14
Illinois 98.9 11,355,747 11,484,994   Wisconsin 15
Indiana 95.1 4,327,916 4,550,057   Ohio 16
Iowa 92.4 2,363,277 2,558,575   Connecticut 17
Kansas 65.1 1,669,657 2,563,505   North Carolina 18
Kentuckye 99.8 4,199,519 4,206,074   Rhode Island 19
Louisianae 40.4 1,731,807 4,287,768   Alabama 20
Maine 79.6 501,290 630,136   Missouri 21
Maryland 93.8 4,549,055 4,847,653   Maine 22
Massachusettse 59.1 3,802,732 6,437,193   Texas 23
Michigan 90.9 6,664,706 7,335,365   Florida 24
Minnesota 98.7 3,905,754 3,956,659   New Mexico 25
Mississippie 50.9 1,480,601 2,910,540   Colorado Tied for
26
Missouri 79.7 3,928,100 4,928,689   Delaware Tied for
26
Montana 31.3 248,850 794,563   Oklahoma 28
Nebraska 69.8 991,292 1,420,624   New York 29
Nevada 72.0 1,744,984 2,422,152   Nevada 30
New Hampshire 42.6 354,637 832,656   Nebraska 31
New Jersey 22.6 1,771,324 7,839,608   Kansas 32
New Mexico 77.0 1,207,034 1,567,857   Arkansas 33
New York 72.9 12,733,582 17,471,590   Washington 34
North Carolina 87.6 5,689,906 6,498,294   Alaska 35
North Dakota 96.2 552,785 574,346   Massachusetts 36
Ohio 89.3 8,948,975 10,021,630   Vermont 37
Oklahoma 73.5 2,493,521 3,392,725   Arizona 38
Oregon 27.4 839,727 3,069,204   Utah 39
Pennsylvania 54.0 5,610,873 10,390,234   Pennsylvania 40
Rhode Island 84.6 826,863 977,261   Mississippi 41
South Carolina 94.6 3,355,873 3,545,617   New Hampshire 42
South Dakota 95.0 657,022 691,333   Louisiana 43
Tennessee 93.7 4,889,987 5,220,410   Wyoming 44
Texas 78.1 16,979,975 21,731,824   Idaho Tied for
45
Utah 54.3 1,216,980 2,242,897   Montana Tied for
45
Vermont 58.7 310,953 529,441   Oregon 47
Virginia 95.0 5,830,328 6,135,847   California 48
Washington 62.9 3,542,948 5,628,782   New Jersey 49
West Virginia 91.7 1,247,301 1,360,193   Hawaii 50
Wisconsin 89.7 3,471,706 3,868,775  

Wyoming 36.4 162,396 446,323  


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. Population, population change and estimated components of population change: April 1, 2000 to July 1, 2006 available at http://www.census.gov/popest/datasets.html.

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 Reference Statistics

 

 

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