2010
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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. Available at http://www.census.gov/popest/data/intercensal/state/state2010.html.
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
- Page last reviewed: May 11, 2012
- Page last updated: May 11, 2011
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