NAVFAC Northwest

Naval Base Kitsap - Bangor

Naval Base Kitsap (NBK) Bangor

NBK Bangor is on the Kitsap Peninsula in Kitsap County, Washington. The base is located on Hood Canal, approximately 6 miles north of Silverdale, Washington. Naval activities began at NBK Bangor in June 1944, when the U.S. Naval Magazine, Bangor, was established to provide a deep-water shipment facility for ordnance. From 1944 into the early 1970s, the Navy facility at Bangor was primarily used for shipment and storage of ordnance and demilitarization of unserviceable and dangerous ammunition. In February 1977, NBK Bangor was commissioned as the West Coast homeport for the Trident Submarine Launched Ballistic Missile System. The current mission of the base is to provide administrative and personnel support for submarine force operations and logistical support for other Navy activities.



Suspension of collecting samples due to social distancing precautions

Because of the Coronavirus outbreak, which is now a global pandemic, the Navy is temporarily suspending collection of off-base drinking water samples.  The safety and welfare of the community and our workforce is a priority of the Navy.  The drinking water sampling will be re-initiated when the Navy receives confirmation from federal and state health officials that such actions are safe for the community and our workforce.

Emergency Response Action

The Navy is taking an emergency response action at NBK Bangor to mitigate potential public exposure to per- and polyfluoroalkyl substances (PFAS), specifically perfluorooctane sulfonate (PFOS) and perfluoroocatonoic acid (PFOA), in off-base drinking water wells near NBK Bangor, Silverdale, Washington. 
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Areas for PFAS Drinking Water Well Sampling

The Navy is requesting to sample private drinking water wells within a designated area near NBK Bangor for certain per- and polyfluoroalkyl substances, commonly known as PFAS. PFAS are a family of thousands of different chemicals which have been widely used in industrial and consumer products since the 1950s. The Navy developed a policy to address past releases of PFAS at installations nationwide, as several PFAS are now of emerging public health concern to the Navy, U.S. Environmental Protection Agency (EPA), state regulatory agencies, and the general public. The EPA has issued a drinking water lifetime health advisory for two commonly used and studied PFAS, perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA).

The most common Navy activity that could have resulted in the historical release of PFOS, PFOA, and other PFAS to the environment is the use of firefighting foam (specifically certain types of aqueous film-forming foam, or AFFF) for testing, training, firefighting, and other lifesaving emergency responses. Because of this historical use, there is potential for PFOS, PFOA, and other PFAS to be in the groundwater at the base, and also be present in nearby private drinking water wells that are located in the direction that the groundwater flows away from the base. The designated sampling area, as shown in Figure 1 and Figure 2, was selected because of the proximity to NBK Bangor and the general groundwater flow direction away from potential PFAS release areas.

Fig. 1. Designated Sampling Area near NBK Bangor - North

Fig. 2. Designated Sampling Area near NBK Bangor - South

NBK Bangor Actions Based on Drinking Water Sampling Results

Due to the historical operations at NBK Bangor that included the use of AFFF, the Navy began drinking water sampling for certain PFAS in drinking water wells in the designated sampling area in February 2020. If PFOS/PFOA are found at or below the EPA lifetime health advisory level of 70 ppt in a drinking water sample, then no additional action will be taken at that time. The Navy will evaluate all results, and additional sampling may be requested. If PFOS/PFOA are found in a private drinking water well sample above the EPA lifetime health advisory level of 70 ppt, the Navy will provide alternate water (likely bottled water) for drinking and cooking until a long-term solution can be put in place.  Table 1 summarizes the drinking water sampling results to date.


Table 1. NBK Bangor – Drinking Water Results as of Friday May 8, 2020

Number of parcels potentially impacted1

Number of drinking water wells identified for testing based on voluntary owner requests

Number of drinking water wells tested

Number of drinking water wells above the lifetime health advisory

Number of drinking water wells below the lifetime health advisory






1 Includes developed and undeveloped/vacant lots and lots served by public water

Identification of PFAS at NBK Bangor

The Navy’s priority with PFAS investigations is to identify and eliminate drinking water exposures above the EPA’s lifetime health advisory level.

Across the country, the Navy has been conducting base-wide evaluations to identify additional potential PFAS releases. These evaluations are being conducted under the federal cleanup program which meets the requirements of, the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Following CERCLA, the Navy’s installation-wide assessments are called preliminary assessments/site inspections, and their purpose is to verify, validate, and update the inventory of PFAS release sites aboard the installation for further investigation and cleanup.  The recent preliminary assessment conducted at NBK Bangor identified 22 on-base areas where PFAS-related releases potentially occurred, and additional investigation is needed. These are listed below in Table 2.

Table 2. Potential PFAS Source Areas at NBK Bangor


Building 1301


Building 1300


1986 Fire Training Facility


Building 7600


2001 Car Fire


Car Crash


2001 Agility Course Fire


Brush Fire


Building 1006 Fire




2012 Car Fire


Building 7030


Site A


Dunnage Canyon (Site 12)


Floral Point (Site B)


Classification Yard


Old Brass Yard (Site 13)


Old Acid Pit (Site (E)


Old Paint Can and Drum Disposal Site (Site 7)


Old Paint Cans and Drum Disposal Site (Site 22)


Incinerator Storage Area (Site 16)


Building 1460

Learn more with the fact sheets, FAQs and Drinking Water Health Advisory documents below.

Posters Displayed at Open House Meetings Feb. 19 & 20 

If you recieved a letter from the Navy and would like to have your dinking water tested, please complete the form below. Instructions for submitting the form are included in the document. 


Homeowner/Resident Contact Information 
Phone: 844-NBKBNGR (844-625-2647)

Media Contact
Phone: 360-627-4046


1322 Patterson Ave. SE, Suite 1000, Washington Navy Yard, D.C. 20374-5065

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