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2010

These statistics were prepared using water system data reported by states to the CDC Water Fluoridation Reporting System as of December 31, 2010, and the U.S. Census Bureau estimates from 2010.
National Water Fluoridation Statistics

Total U.S. population, personsa 308,745,538
U.S. population on community water systems (CWS), personsb 276,607,387
Total U.S. population on fluoridated drinking water systems, personsb 204,283,554
Percentage of U.S. population receiving fluoridated waterc 66.2%
Percentage of U.S. population on CWS receiving fluoridated waterd 73.9%
Total number of CWS in United Statesb 54,293
Number of CWS providing fluoridated waterb 18,427
Number of CWS adjusting fluorideb 6,042
Number of CWS consecutive to systems with optimal fluoride levelsb 6,795
Number of CWS with naturally occurring fluoride at or above optimal levelsb 5,590
Population served by CWS with naturally occurring fluorideb 10,077,922

 

State Fluoridation Percentage Calculations and States Ranked by Fluoridation Percentage

State Persons receiving fluoridated water Persons served by CWS % Rank
United States 204,283,554 276,607,387 73.9
Alabamae 3,821,766 4,779,736 80.0 22
Alaska 404,039 643,373 62.8% 36
Arizona 3,114,799 5,493,584 56.7% 38
Arkansas 1,724,131 2,666,306 64.7% Tied for 33
Californiaf 22,812,721 36,756,666 62.1% 37
Coloradoe 3,523,554 5,029,196 70.1% 31
Connecticut 2,370,423 2,604,427 91.0% 14
Delaware 705,344 818,110 86.2% 19
District of Columbia 595,000 595,000 100%
Florida 13,377,651 17,156,553 78.0% 25
Georgiae 8,924,598 9,687,653 92.1% 11
Hawaiif 139,598 1,290,549 10.8% 50
Idaho 335,127 1,099,561 30.5% 46
Illinois 11,325,132 11,403,176 99.3% 3
Indiana 4,326,732 4,582,296 94.4% 8
Iowa 2,344,818 2,541,455 92.3% 10
Kansas 1,155,071 1,775,588 65.1% 32
Kentuckye 4,334,223 4,339,367 99.9% 1
Louisianae 1,846,149 4,533,372 40.7% 43
Maine 521,414 660,367 79.0% 24
Maryland 5,140,618 5,151,947 99.8% 2
Massachusettse 4,626,859 6,547,629 70.7% 29
Michigan 7,322,410 7,996,744 91.6% Tied for 12
Minnesota 4,117,266 4,166,424 98.8% 4
Mississippie 1,639,348 2,967,297 55.2% 40
Missouri 3,966,102 4,966,951 79.8% 23
Montana 233,221 788,805 29.6% 47
Nebraska 1,001,665 1,425,929 70.2% 30
Nevada 1,855,460 2,544,079 72.9% 28
New Hampshire 357,262 832,631 42.9% 42
New Jersey 1,111,624 8,221,293 13.5% 49
New Mexico 1,210,777 1,571,600 77.0% 26
New Yorke 14,468,141 19,378,102 74.7% 27
North Carolina 6,174,598 7,072,012 87.3% 17
North Dakota 559,246 577,325 96.9% 5
Ohio 8,772,683 10,005,412 87.7% 16
Oklahoma 2,296,459 3,547,668 64.7% Tied for 33
Oregon 833,227 3,688,540 22.6% 48
Pennsylvania 5,802,260 10,636,421 54.6% 41
Rhode Island 853,580 1,000,413 85.3% 20
South Carolina 3,434,565 3,944,594 87.1% 18
South Dakota 642,942 678,028 94.8% 7
Tennessee 5,336,600 5,827,549 91.6% Tied for 12
Texas 19,362,219 24,080,084 80.4% 21
Utahe 918,473 2,763,885 33.2% 45
Vermont 256,006 452,116 56.6% 39
Virginia 6,124,274 6,403,141 95.6% 6
Washington 3,490,031 5,402,328 64.6% 35
West Virginia 1,208,015 1,307,369 92.4% 9
Wisconsin 3,300,037 3,755,613 87.9% 15
Wyoming 165,296 449,223 36.8% 44

Footnotes

a. Census Population Count 2010. Intercensal Estimates of the Resident Population for the United States, Regions, States, and Puerto Rico: April 1, 2000 to July 1, 2010. Source: Population Estimates Program, U.S. Census Bureau. Internet release date: December 21, 2011.

b. Reported in CDC Water Fluoridation Reporting System (WFRS). For purposes of this report, a water system is considered a community water system if so designated by the state drinking water administrator in accordance with the regulatory requirements of the U.S. Environmental Protection Agency. In general, public water systems provide water for human consumption through pipes or other constructed conveyances to at least 15 service connections, or serves an average of at least 25 people for at least 60 days a year. A community water system is a public water system that supplies water to the same population year-round. Available at http://water.epa.gov/infrastructure/drinkingwater/pws/factoids.cfm.

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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