PFAS Sampling Results

The City of Vancouver provides information about PFAS sampling results to enable drinking water customers to stay informed. Visit Learn about PFAS for more information about actions the City is taking to keep your water safe and for steps you can take at home.

Washington State Board of Health PFAS State Action Levels

In 2021, the Washington State Board of Health adopted State Action Levels for five PFAS that set testing and notification requirements for some water providers, including Vancouver starting in 2023. State Action Levels are set to protect human health and based on the best available science at the time. PFAS chemicals are still being researched and health advice is updated as new science becomes available. State Action Levels are public health goals to protect all people, including sensitive groups and life stages, from potential harmful effects of drinking water with PFAS over a lifetime.

If you have been drinking water over the State Action Level, it doesn’t mean you will get sick or have health problems from this exposure. Learn more at doh.wa.gov/pfas.

U.S. Environmental Protection Agency Proposed PFAS Maximum Contaminant Level

In 2023, the U.S. Environmental Protection Agency proposed a National Primary Drinking Water Regulation for six PFAS. The proposed rule does not require any action until finalized, but if approved would set enforceable levels of PFAS in drinking water and require public water systems to monitor for these PFAS, notify the public of the levels of these PFAS, and reduce the levels of these PFAS in drinking water if they exceed the proposed standards.

For more information, see EPA’s Proposed PFAS National Primary Drinking Water Regulations Frequently Asked Questions and Answers.

PFAS State Action Levels / Proposed Federal Maximum Contaminant Levels

Types of PFASWashington Department of Health
State Action Level
Proposed EPA
Maximum Contaminant Level
PFOA10 ppt4 ppt
PFOS15 ppt4 ppt
PFNA9 ppt1 based on
EPA Hazard Index3
PFHxS65 ppt1 based on
EPA Hazard Index3
PFBS345 ppt1 based on
EPA Hazard Index3
HFPO-DA (commonly referred to as GenX Chemicals2)None1 based on
EPA Hazard Index3

11 ppt (part per trillion) is equivalent to a single drop of water in 20 Olympic-sized swimming pools

2GenX chemicals are not on the Washington State Department of Health’s list of PFAS with State Action Levels

3EPA intends to provide water systems with a web-based form that will automatically calculate the Hazard Index for four types of PFAS together

City of Vancouver PFAS Test Results

Sampling Dates Shown Here: Dec. 2023

Below are the sampling results from the City’s water stations. Vancouver has an open system in which water can be transferred from almost any water station to different areas of the City. We are adjusting our operations and prioritizing use of sources with lower levels of PFAS. However, due to the prevalence of PFAS in local groundwater, water rights limitations and operational restrictions, we are unable to turn off all PFAS sources that exceed State Action Levels without impacting supply.

Note: ND = non detect; ppt = parts per trillion (1 ppt is equivalent to a single drop of water in 20 Olympic-sized swimming pools)

Most Recent PFOA Sampling Results: Dec. 2023

City of Vancouver Water StationPFOA Results (ppt)Washington Department of Health
State Action Level
10 ppt
Water Station 1ND (not detected)Below
Water Station 3NDBelow
Water Station 45.62Below
Water Station 7NDBelow
Water Station 85.99Below
Water Station 95.46Below
Water Station 1411.5Above
Water Station 155.04Below
Ellsworth StationNDBelow

Most Recent PFOS Sampling Results

City of Vancouver Water StationPFOS Results (ppt)Washington Department of Health
State Action Level
15 ppt
Water Station 14.41Below
Water Station 35.77Below
Water Station 414.9Below
Water Station 74.54Below
Water Station 812.3Below
Water Station 911.2Below
Water Station 1418.6Above
Water Station 1515.3Below
Ellsworth StationNDBelow

Most Recent PFNA Sampling Results

City of Vancouver Water StationPFNA Results (ppt)Washington Department of Health
State Action Level
9 ppt
Water Station 1ND
Water Station 3ND
Water Station 4ND
Water Station 7ND
Water Station 8ND
Water Station 9ND
Water Station 14ND
Water Station 15ND
Ellsworth StationND

Most Recent PFHxS Sample Results

City of Vancouver Water StationPFHxS Results (ppt)Washington Department of Health
State Action Level
65 ppt
Water Station 14.94Below
Water Station 35.47Below
Water Station 46.18Below
Water Station 73.98Below
Water Station 83.2Below
Water Station 93.31Below
Water Station 145.22Below
Water Station 155.19Below
Ellsworth StationNDBelow

Most Recent PFBS Sample Results

City of Vancouver Water StationPFBS Results (ppt)Washington Department of Health
State Action Level
345 ppt
Water Station 13.56Below
Water Station 34.3Below
Water Station 44.4Below
Water Station 7NDBelow
Water Station 85.83Below
Water Station 94.93Below
Water Station 147.61Below
Water Station 156.01Below
Ellsworth StationNDBelow
City staff collecting water samples for quarterly testing