PFAS Analyte · UCMR 5

6:2FTS

6:2 Fluorotelomer sulfonic acid

CAS 27619-97-2· UCMR 5· No individual MCL set
175
Systems monitored
with official records
175
Systems with detections
100.0% detection rate
238
Detected samples
of 238 total samples
Jan 2023 – Nov 2025
Monitoring period
per UCMR 5 schedule

Detection Rate — 6:2FTS

Systems with any detection100.0%

175 of 175 monitored systems

Sample-level detection rate100.0%

238 detections across 238 total samples

States with Most 6:2FTS Detections

Water Systems with Most 6:2FTS Detections

Systems ranked by number of samples detected above the minimum reporting limit. Detection count reflects monitoring frequency, not concentration level.

All records are from official EPA UCMR 5 monitoring data. Detection counts reflect the number of samples where the analyte was reported above the minimum reporting limit (MRL). They are not compliance determinations and do not imply a health violation.

6:2FTS at a Glance

Full Name6:2 Fluorotelomer sulfonic acid
CAS Number27619-97-2
UCMR RoundUCMR 5
EPA MCLSee mixture rule
Systems Monitored175
Systems Detected175
Detection Rate100.0%

Note

No MCL as of April 2024.

EPA PFAS Drinking Water RegulationEPA UCMR 5 Source Data Back to PFAS Watchlist