Drinking Water Fluoridation

The City fluoridates our drinking water to improve the dental health for consumers of Beaverton’s water.  The fluoridation system was completed, tested, and began service in mid-May 2004.  Since then, the City’s water has been fluoridated at a target level of 0.9 parts per million (ppm).  Sodium fluoride is added to Beaverton’s drinking water after it leaves the JWC Water Treatment Plant and before entering the City for distribution.  The City’s fluoride feed facility employs sensitive instruments to measure and maintain the desired level of fluoride in the drinking water system.  In addition, seven online electronic fluoride analyzers are situated in different locations throughout the City to monitor fluoride levels in the drinking water 24 hours a day. 

Fluoridation Monitoring and Operation

The City’s fluoride feed facility is equipped to ensure that the desired level of fluoride is maintained in the drinking water supply. On-line electronic fluoride analyzers installed in different locations around the City will monitor fluoride levels in the drinking water 24-hours a day. Data collected from the fluoride analyzers is displayed and stored on a water system master control computer. The master control computer uses the data to control and adjust the level of fluoride, as programmed by City water maintenance staff. City water maintenance staff are required by the Oregon Department of Human Services to have water treatment certification, which covers fluoridation. The Oregon Department of Human Services also requires regular additional hand-collected drinking water samples to be tested by a state certified laboratory to check calibration of the on-line electronic monitoring analyzers. A wide range of water quality data is reported by the City of Beaverton to the Oregon Department of Human Services. Beaverton’s test results and water system information can be found on the Oregon Department of Human Services Internet web site at:

http://170.104.63.9/inventory.php?pwsno=00081

Water Service Providers

The City of Beaverton supplies drinking water to approximately 80 percent of the residents who live within the City limits. The remaining 20 percent of residents in Beaverton are supplied water by either the Tualatin Valley Water District (TVWD), West Slope Water District, or Raleigh Water District. For information on fluoridation in the three other water provider agencies inside the City limits, please contact them directly.

Water Service Providers Map  Large PDF File 

Fluoridated Water in the Tigard Water District

Though none of Tigard’s wholesale water providers fluoridate their water supplies, water from the Joint Water Commission is piped through the City of Beaverton’s water distribution system. Since Beaverton adds fluoride to the water supply, water delivered via this route does contain fluoride. Only those water customers nearest to the water source entry point, in the vicinity of Barrows Road and Scholls Ferry Road, will receive fluoridated water.

To find out more, please contact the City of Tigard’s Water Quality Program Coordinator, Sally Mills at 503-718-2604 or sally@tigard-or.gov.

City of Tigard: Fluoride in the Water?

More Water System Information

If you have questions or comments, you can reach the water system manager by email:

If you would prefer to make comments or ask questions by phone, please call us at (503) 350-4059. If you would like a response to your call, please leave your name, telephone number and your request.

Aquifer, Storage and Recovery (ASR)

Cross Connection/ Drinking Water

Water Conservation

Water Quality Reports

Water Fluoridation

Utilities in Rights of Way

Utility Billing

Drinking Water Program

Sanitary Sewer Program

Storm Drainage Program

Utility Projects (CIP)

Drinking Water Supply

System Development Charges / Methodology

Water Questions?