Fluoride in drinking water - Washington State Dept of Health

Division of Environmental Health/Office of Drinking Water banner

You are here: DOH »EH » ODW » Publications » Fluoride

Site Directory:

A - Z Topic List

• Water System Data
Sentry - SWAP - GIS

• Some files on this page
may require a reader.
Download a free reader.

Questions and Answers

Is my drinking water fluoridated? DOH Pub#331-409 (PDF 66KB)
Your dentist will want to know

Lists of Water Systems with fluoride (created with Microsoft Excel 2003 - 58KB).

Open the Excel file and note the three tabs at the bottom.

Fluoridating Systems (green list): The systems on this list artificially adjust fluoride in water for dental benefits. The fluoride concentration is between 0.8 mg/L and 1.3 mg/L.
Intertied Systems (blue list): The systems on this list are connected to the Fluoridating Systems and have no other sources that would dilute the concentration of fluoride. The water system doesn't fluoridate but consumers still receive water with fluoride levels between 0.8 mg/L and 1.3 mg/L.
Natural: The test results of these systems show natural fluoride levels at or above 0.6 mg/L. Systems that have optimal natural fluoride levels between 0.8 and 1.3 mg/L have a grey background.

Dentists use fluoride levels to determine patient treatment.

If you have questions on Fluoride in drinking water email Richard Pedlar or call him at 360-236-3115.

Links to external resources are provided as a public service and do not imply endorsement
by the Washington State Department of Health

Dept. of Health
Office of Drinking Water
243 Israel Road S.E. 2nd floor
Tumwater, WA 98501 Mail:
P.O. Box 47822
Olympia, WA 98504-7822
(360) 236-3100

Send inquiries about DOH and its programs to the Health Consumer Assistance Office
Comments or questions regarding this Web site? Send mail to Judy J. Sides.

Last Update : 06/05/2008 08:34 AM