PFAS ("forever chemicals") · 2024

PFOS in Vancouver, WA tap water

Over the federal limit· 5.8× the limit

Vancouver, WA's 2024 Consumer Confidence Report shows PFOS at or above the federal limit (4 MCL). Measured value is 5.8× the threshold.

The measurement

StatisticValue
Range
Vancouver Sampling Result
0–23.1

Verbatim from Vancouver, WA's 2024 Consumer Confidence Report — source document ↗

About PFOS

Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.

Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.

How Vancouver, WA compares

5 of the 147 systems measuring PFOS on The Water Map have it at or above the federal limit:

Nearby systems also reporting PFOS:

People also ask

+Is there PFOS in Vancouver, WA tap water?

Yes — Vancouver, WA's 2024 Consumer Confidence Report lists PFOS at 0–23.1. Vancouver, WA's 2024 Consumer Confidence Report shows PFOS at or above the federal limit (4 MCL). Measured value is 5.8× the threshold.

+What's the federal limit for PFOS in drinking water?

The federal MCL for PFOS is 4 . The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.

+What is PFOS?

Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.

+Which other U.S. cities have PFOS over the federal limit?

5 of the 147 systems on The Water Map measuring PFOS report it at or above the federal limit. Examples include Charleston, SC, North Charleston, SC, City of Hialeah, FL.

+Where does this PFOS measurement come from?

This page reproduces the PFOS entry from the 2024 Consumer Confidence Report published by the Vancouver, WA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/wa/vancouver/2024/source.

Full report
All Vancouver, WA water-quality data →
Every contaminant measured in the 2024 report.
Contaminant pillar
PFOS across the U.S. →
Every public water system measuring PFOS, ranked.