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Drinking Water Testing for PFAS

The 2020 Assistant Secretary of Defense policy requires the Navy to monitor for the potential presence of Per- and Polyfluoroalkyl substances (PFAS) within each installation’s drinking water system where DoD is not the water purveyor.

The policy requires a two-part approach:

1) Request PFAS data from the non-DoD drinking water purveyors that serve our installations.

2) If no recent PFAS data is available, then the Navy must sample for PFAS.


Background: Two specific PFAS compounds, Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic Acid (PFOA), have been assigned a Lifetime Health Advisory (LHA) limit of 70 parts per trillion (ppt) by the EPA.

Between 2014 and 2016, the Navy and/or the water suppliers conducted PFOS and PFOA sampling in drinking water serving the NRNW facilities and results were below detection limits (non-detectable).

Due to the amount of time that has passed since that sampling occurred, changes in lab protocols, and lack of more recent data from water suppliers, the Navy must conduct additional sampling. 


Public Availability of Sampling Results: Naval Facilities Engineering Systems Command Northwest performed PFAS sampling via contractor from November through December 2021 for Naval Station Everett areas of responsibility within the Navy Region Northwest. The sampling was conducted in response to the July 2020 DoD policy for PFAS sampling in non-DoD owned water systems.

All test results met DoD policy and were below EPA LHA level and Washington State Action Levels (SALs) requirements. No further action is required.

A summary table of final results of the testing are provided below, along with the July 2020 DoD Policy Memo:

PFAS Sample Summary Table Results for NSE Non-DoD Water Systems

DoD Policy Memo July 2020


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