KENNEWICK, Wash. – The City of Kennewick has detected low levels of PFAS, also known as “Forever Chemicals,” in its drinking water.
On March 4, 2025, water samples taken from the Ranney Collector source exceeded Washington’s State Board of Health State Action Level for PFOS, measuring 16.7 parts per trillion against the limit of 15.0 ppt.
PFAS are manmade chemicals used in products like stain-resistant fabrics and nonstick pans. These chemicals are tasteless, colorless, and odorless, and have been released into the environment over years of use in industrial and consumer products.
The City of Kennewick is working with engineers from Hazen Sawyer to design a treatment system to remove PFAS from the water. This effort is in preparation for the EPA’s compliance deadline in April 2029. A $15 million funding award from Washington’s Department of Health Drinking Water State Revolving Fund loan program will support this project.
Residents are not required to take action at this time. However, the Washington State Department of Health suggests pregnant women, breastfeeding mothers, and those mixing infant formula with tap water consider using an alternative water source.
