The Army is committed to ensuring quality drinking water is provided to its Soldiers, family members, and civilians.  Proactive sampling is performed by the Army on its drinking water systems and coordination with other purveyors of drinking water to installations occurs to ensure PFOS/PFOA remains below the Environmental Protection Agency’s 2016 lifetime health advisory level of 70 parts per trillion (ppt) for PFOS and PFOA (individually or combined). While not an enforceable regulatory standard, a lifetime health advisory represents a concentration in drinking water that is not expected to produce adverse health effects if the water is consumed over an entire lifetime.

Status: Finished drinking water, which is the treated water people drink at Joint Base Lewis McChord's Yakima Training Center, does not contain PFOS/PFOA above the EPA 2016 lifetime health advisory levels. Additionally, Army-provided drinking water complies with the standards of the Safe Drinking Water Act, a federal law designed to protect the quality of drinking water supplied to the American public.  The Army will continue to sample and monitor on-base drinking water.   

PFOA + PFOS results:  3.3 parts per trillion (ppt) in finished drinking water

Test Results Date:  November 2022

Testing frequency:  quarterly

Future Testing Event:  June 2023

History: As a proactive measure in 2019, Yakima Training Area wells were tested for PFAS. Test results for one well (103 ppt) showed an exceedance of the EPA lifetime health advisory.  The Army immediately closed the well.  This well is in a remote location and was only used during training exercises.  An alternate water source is now used for training exercises.

Type of drinking water systems: Army-owned

For questions contact:  Public Affairs

Office phone number:  (253) 967-0148 

Office e-mail address:  joseph.j.piek.civ@army.mil


The Army follows the federal cleanup law, the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980 (also known as “Superfund”), and long-standing Environmental Protection Agency (EPA) regulations for all chemicals in its cleanup program, including PFAS.  In collaboration with federal and state regulatory agencies and interested stakeholders, the Army follows the CERCLA process to investigate a release resulting from Army activities and to assess the appropriate cleanup actions based on risk to human health and the environment.

When the Army identifies that it has impacted drinking water above the EPA’s 2016 lifetime health advisory levels for PFOS/PFOA on or off an installation, it takes appropriate actions to provide alternate water and ensure drinking water levels are promptly reduced below the health advisory levels (for example, by providing bottled water, shutting down wells, installing treatment systems or connecting to municipal water).

Final reports, points of contact, and/or site specific web links will be updated on this page as cleanup actions progress.

CERCLA is a complex, multi-phase process that provides a consistent, science-based approach across the nation for cleanup and may take years to complete. Read more about CERCLA and the phased approach here


Current CERCLA Phase:  SI Underway; RI Scheduled


Additional Information on the PFAS response is available at:


For more information, contact:  Public Affairs

Office phone number: (253) 967-0148

Office e-mail address:  joseph.j.piek.civ@army.mil