Natural Levels of Fluoride in Drinking Water by State:

• It is not known if the water systems listed below are all still active
• The state Water System ID is the same as EPA's preceded with the state's initial. For example, Washington would be WA0000000

Information from:
Fluoridation Census 1992.
Volume 1.
Published 1993 by
U.S. Department of Health & Human Services
Public Health Service
Centers for Disease Control and Prevention Services
Naional Center for Prevention Services
Division of Oral Health
Atlanta, Georgia 30333

Return to Index: Natural Levels of Fluoride in US Drinking Water

See map from U.S. Census Bureau with links to each county in Washington

State Water Systems County EPA ID No. Population Natural Level of Fluoride (ppm)
Washington Burbank Irrig Dist #4 Walla Walla  5309300 763 1.9
Washington Lind Adams  5347350 547 1.6
Washington  Moxee City  Yakima  5357300 857 1.5
Washington  Odessa  Lincoln  5363050  950  1.9
Washington  Othello WD  Adams  5364850 4,636 2.7
Washington  Paterson Benton 5366479 90 2.0
Washington  Plymouth  Benton  5368045 190  2.3


Percentage of State Population served by Public Water Systems that Receive Fluoridated Water (see all states)
State 2004 2003 2002 2001 2000 1992
Washington 58.9 58.0 57.8 57.8 57.8  53.2