City of Yakima Drinking Water

The latest information about the City of Yakima’s water treatment and water quality programs is now available.

The 2020 Water Quality Report is available at 2020-Water-Quality-Report.pdf (

The report is available in Spanish at 2020 CCR (

“We hope this pamphlet will inform the community about their tap water and inspire confidence that the water we all rely on is of the highest quality possible,” said Assistant Director of Public Works David Brown. “In pursuit of that goal the Water/Irrigation Division staff is committed to around-the-clock vigilance and service. We are proud to announce the City’s tap water meets and exceeds all state and federal requirements.”

To that end, the City of Yakima is again testing its water for lead and copper this summer. The analysis is required every three years by the federal Environmental Protection Agency.

Last August, the City of Yakima Water Treatment Plant received the Gold Certificate of Achievement for 10 years of outstanding performance. The award was presented by the Washington State Department of Health (DOH) Office of Drinking Water for meeting the high standards of DOH’s Treatment Optimization Program for 10 continuous years, 2010-2019.

To receive this award, the City’s plant also met other stringent criteria related to protecting public health. Yakima’s was one of just eight water treatment plants in the state receiving the Gold Certificate in 2020.

Visit for more about the City of Yakima’s water treatment and water quality programs.

The intake for the City’s drinking water system is located on the Naches River about 6 miles west of Yakima. Water is diverted from the Naches River at the confluence of the Tieton and the Naches Rivers by the Bureau of Reclamation through the Wapatox Canal. The intake structure has a number of fish protection facilities. Water leaves the intake and travels to the Water Treatment Plant through a 54-inch diameter concrete main.

How does the City’s system treat and deliver high-quality drinking water to homes and businesses throughout Yakima?

What can you do to help preserve this precious resource?

Find out by visiting

One in a series of social media infographics about the City of Yakima’s drinking water.