City of Beaverton Public Works

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Beaverton Drinking
Water Quality Reports

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The City of Beaverton believes that safe drinking water is our highest priority. As required by the United States Environmental Protection Agency (EPA) the following Water Quality Reports on Your Drinking Water are available to read or print from this site (PDF format).

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July 24, 2008
Commercial/Industrial Water Customers
Updates about your City Drinking Water

A letter was recently sent to commercial and industrial customers to inform them of technical changes in the Joint Water Commission (JWC) treatment process used for drinking water you receive from the City of Beaverton. The letter identified the reasons behind changes to the treatment process. The JWC, which supplies potable water to the City of Beaverton, announced a taste and odor issue at their water treatment plant in early June. The JWC is taking multiple steps to treat the water for taste and odor, and those actions may cause slight changes to the characteristics of the water (see Water Treatment Changes Address Taste and Odor Issues PDF). Though the current taste and odor may be noticeably different, our City drinking water is safe to drink and the water quality is tested at numerous points throughout the system. Our water continues to meet Federal and State health and water quality standards.

woman drinking water

The City of Beaverton supplies drinking water to about 67,000 residents, or about 80 percent of the total 85,560 residents who live within the City limits. The primary source of filtered drinking water in Beaverton’s service area is from the JWC water treatment plant, which filters surface water pumped from the nearby upper Tualatin River, located 20 miles distant from the City. The JWC, an intergovernmental water supply agency, provides the primary potable water supply to more than 400,000 customers in Washington County through its member agencies: the Cities of Beaverton, Hillsboro, Forest Grove, and Tigard, and the Tualatin Valley Water District. Beaverton has been a member of the JWC since 1979.

You might have noticed the taste and odor issue or read the June 26, 2008, article in The Oregonian in which the taste and odor problem is described. Persistent algal blooms in the Tualatin River source water continue to affect the taste and odor of treated drinking water. A decision was made to enact some operational changes at the JWC treatment plant to combat taste and odor. The operational changes may cause a fluctuation, within the acceptable range, of regulated compounds and parameters (e.g., turbidity, pH, chlorine residual, etc.) deemed acceptable by State and Federal drinking water standards. According to the JWC, it is uncertain exactly when the issue will be fully resolved. As noted above, our drinking water remains safe to drink.

During the summer months each year, most of the water delivered to City water customers is from the JWC. However, during June through October, the City also blends up to 18 percent groundwater from wells located in the City with JWC water. During the rest of each year, the water supply is sourced entirely from the JWC.

You are welcome to visit the JWC’s Web site, listed below. You’ll also find a link, at the top of this page, to the latest edition of the City’s overall water quality report.

Stay Informed

For more information, visit:

The City of Beaverton will send information out by email when we receive notice of applicable changes in water chemistry that might be of interest to water customers using water for commercial or industrial processes. To receive these updates, please complete the form below.

If you would like to receive ongoing, updated technical information about water from the City of Beaverton, enter your