The Navy started the off-base drinking water investigation on Whidbey Island in November 2016. From November 2016 through November 2019, the Navy sampled 280 drinking water wells near Ault Field, OLF Coupeville, and the Area 6 Landfill for PFAS. Of the total 280 wells, samples collected from 16 wells (37 properties) are above the EPA LHA level established for PFOS and/or PFOA. The Navy conducted four phases of drinking water sampling near Ault Field, two phases near OLF Coupeville, and two phases near Area 6 Landfill. The Navy held several public meetings from 2016-2018 to share the plan for off-base drinking water sampling and associated results. Residents in the sampling areas were notified by letter and can arrange sampling -- if they haven't already done so -- by calling 360-396-6387. We encourage residents in the sampling areas to have their wells sampled. See “Documents” below for factsheets and posters developed for the public meetings.
The Navy is providing bottled water or kitchen sink filter to well owners/users with impacted drinking water wells above the EPA’s LHA. The Navy will update property owners on their validated results as they become available. Out of respect to residents' privacy, location-specific test results will only be released by the Navy to the affected residents. However, the Navy will post anonymous test results on the website such that the public is informed of the general results in drinking water wells around NAS Whidbey Island. See “Documents” below.
In October 2017, the Navy began biannual sampling of drinking water wells where PFAS were detected, and drinking water wells adjacent to properties with PFAS exceedances. These are precautionary measures to ensure residents living near our installations are not being exposed to PFAS in off-base drinking water. The Navy will continue biannual sampling until a long-term remedial solution is identified and implemented based on appropriate federal and/or state regulations.
The Navy continues to work directly with residents, community leaders and other federal, state and local agencies on this important national issue and will keep the community informed while respecting the privacy of individual residents.
Drinking Water in Coupeville near OLF Coupeville:
The Navy identified eight drinking water wells (associated with 11 homes) above the EPA’s LHA. The Navy identified connecting the affected residences to the Town of Coupeville drinking water distribution system and adding granular activated carbon adsorption treatment to the Town of Coupeville’s Water Treatment Plant, as the most protective and efficient long-term solution to address PFAS in private drinking water wells.
· Construction started in February 2018
· PFAS treatment was installed and verified by July 2019
· Seven home connected to new waterline by March 2020
· Final improvements for the Town of Coupeville’s Water Treatment Plant – on going
Drinking Water in Oak Harbor near Area 6 Landfill and Ault Field:
The Navy identified eight drinking water wells (associated with 37 homes) above the EPA’s LHA. The Navy developed an Engineering Evaluation and Cost Analysis (EE/CA) to evaluate long-term solutions for impacted drinking water wells near Area 6 Landfill and Ault Field. The EE/CA was finalized in March 2020 after a 30-day public comment period.
The Navy is presenting an Action Memorandum with the preferred alternatives identified in the EE/CA. The Action Memorandum is available for public comment July 18-Aug. 18. The preferred alternatives, listed below, were selected based on effectiveness, implementability, and cost.
- Connection to Navy Water Supply (one home associated with one well)
- Connection to City of Oak Harbor Water Supply (26 homes connected with six wells)
- New (replacement) Drinking Water Well (one home associated with one well