PFAS Analyte · UCMR 5
PFHxS
Perfluorohexane sulfonic acid
Detection Rate — PFHxS
980 of 980 monitored systems
2,992 detections across 2,992 total samples
States with Most PFHxS Detections
Water Systems with Most PFHxS Detections
Systems ranked by number of samples detected above the minimum reporting limit. Detection count reflects monitoring frequency, not concentration level.
Cliffdale West
NC0326332 · NC · 15,220 served
Brookwood Comm Wtr System
NC0326127 · NC · 15,380 served
Bayleaf Master
NC0392373 · NC · 16,715 served
Emerald Coast Utilities Authority (ecua)
FL1170525 · FL · 242,172 served
Town of Payson
AZ0404032 · AZ · 17,682 served
City of Fresno
CA1010007 · CA · 545,716 served
Ridgewood Water
NJ0251001 · NJ · 61,700 served
Suffolk County Water Authority
NY5110526 · NY · 1,100,000 served
Cal-water Service Co.-chico
CA0410002 · CA · 114,925 served
Parsippany-troy Hills Water Department
NJ1429001 · NJ · 50,400 served
Truckee Meadows Water Authority
NV0000190 · NV · 442,000 served
City of Vancouver
WA5391200 · WA · 373,047 served
Goodfellow Air Force Base
TX2260027 · TX · 5,241 served
City of Modesto
CA5010010 · CA · 218,771 served
Liberty Water Lpsco
AZ0407046 · AZ · 55,810 served
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. The EPA MCL for PFHxS is 10 ppt under the PFAS National Primary Drinking Water Regulation (April 2024).
PFHxS at a Glance
Note
Individual MCL of 10 ppt finalized April 2024.