Drinking water / AR

PFAS in Arkansas drinking water

172 Arkansas public water systems tested under UCMR5. 10 detected at least one PFAS compound; 162 detected none at the reporting thresholds. Values are the highest single result per compound, in ng/L (parts per trillion). The federal limit for PFOA and PFOS is 4 ng/L.

Water system	Serves	Highest results (ng/L)	Reading
DARDANELLE WATERWORKS AR0000601	Yell	PFBA 5.9PFHxS 5.3PFOS 4.4 *	above final limit
BEEBE WATERWORKS AR0000592	White	PFBA 12	detected
BENTONVILLE WATER UTILITIES AR0000041	Benton	6:2 FTS 6.2	detected
CROWLEYS RIDGE WATER ASSOC AR0000180	Poinsett	PFBA 5.2	detected
FLIPPIN WATERWORKS AR0000351	Marion	PFBA 9.7	detected
HOT SPRING CO WATER ASSOC AR0000236	Hot Spring	PFBA 6.7	detected
LAKEVIEW-MIDWAY PUBLIC WATER AUTHORITY AR0000027	Baxter	PFBA 5.6	detected
NASHVILLE WATERWORKS AR0000244	Howard	PFBA 5.4	detected
SILOAM SPRINGS WATERWORKS AR0000056	Benton	PFBS 7PFPeA 5.5PFHxA 3.8	detected
WEST STONE COUNTY WATER ASSN AR0000735	Cleburne +3	PFBA 7.8	detected

* exceeds the final federal MCL for that compound. Detections of compounds whose limits EPA proposed to rescind in May 2026 are shown for information.

Systems with no PFAS detected

162 tested systems reported no PFAS above the laboratory reporting limits. Each has its own page with its sampling detail.

A detection at the system level does not tell you what reaches one specific tap: levels vary by entry point, treatment train and plumbing. A certified lab test of your own tap settles it. Testing and treatment options