Is there PFAS in Iredell Water Corporation tap water?

Q: Is there PFAS in Iredell Water Corporation tap water?

Yes. The EPA's national survey measured PFOA or PFOS above the 4 parts per trillion federal limit in Iredell Water Corporation.

Yes, and above the federal limit. The highest PFOA or PFOS reading was 18.8 parts per trillion, against a limit of 4.

Iredell Water Corporation is a public water system in North Carolina, serving more than 10,000 people. The EPA required almost every system in the country to test for 29 PFAS compounds and published every result. These are that system’s own readings, not an estimate and not ours.

Every compound tested, 8 of 29 found

Compound	Highest reading	Federal limit	Detected in
PFPeA	60.6 ppt	no federal limit	6 of 80 samples
PFHxA	30.5 ppt	no federal limit	7 of 80 samples
PFOA	18.8 ppt	4 ppt	8 of 80 samples
PFBA	14.7 ppt	no federal limit	2 of 80 samples
PFHpA	9.9 ppt	no federal limit	2 of 80 samples
PFBS	6.2 ppt	no federal limit	5 of 80 samples
PFOS	4.9 ppt	4 ppt	6 of 80 samples
PFHxS	3.6 ppt	10 pptEPA has proposed withdrawing this limit	3 of 80 samples
11Cl-PF3OUdS	not detected	no federal limit	0 of 80 samples
4:2 FTS	not detected	no federal limit	0 of 80 samples
6:2 FTS	not detected	no federal limit	0 of 80 samples
8:2 FTS	not detected	no federal limit	0 of 80 samples
9Cl-PF3ONS	not detected	no federal limit	0 of 80 samples
ADONA	not detected	no federal limit	0 of 80 samples
HFPO-DA	not detected	10 pptEPA has proposed withdrawing this limit	0 of 80 samples
NEtFOSAA	not detected	no federal limit	0 of 80 samples
NFDHA	not detected	no federal limit	0 of 80 samples
NMeFOSAA	not detected	no federal limit	0 of 80 samples
PFDA	not detected	no federal limit	0 of 80 samples
PFDoA	not detected	no federal limit	0 of 80 samples
PFEESA	not detected	no federal limit	0 of 80 samples
PFHpS	not detected	no federal limit	0 of 80 samples
PFMBA	not detected	no federal limit	0 of 80 samples
PFMPA	not detected	no federal limit	0 of 80 samples
PFNA	not detected	10 pptEPA has proposed withdrawing this limit	0 of 80 samples
PFPeS	not detected	no federal limit	0 of 80 samples
PFTA	not detected	no federal limit	0 of 80 samples
PFTrDA	not detected	no federal limit	0 of 80 samples
PFUnA	not detected	no federal limit	0 of 80 samples

Every row is a compound the EPA required this system to test for, whether it was found or not. Readings are the highest single result the system reported. Compliance is judged on an annual average, so one high sample is not by itself a violation. “Not detected” means below the level the laboratory method can measure, which is not the same as zero. Last sample 3/3/2025.

What actually removes it

Boiling does not remove PFAS and concentrates it. Reverse osmosis and certified activated carbon do. These are the highest-graded filters in our database, scored 0 to 100 on the chemistry of the filter itself.

All water filter grades →

ZIP codes this system serves

27013, 27020, 28115, 28166, 28625, 28634, 28660, 28677, 28687, 28689

Other systems in North Carolina

Nashville, Town of Greensboro, City of Brookwood Comm Wtr System Robeson County Water System Fayetteville Public Works Comm Bayleaf Master Cliffdale West South Granville Wtr&sewer Authority Burlington, City of Asheboro, City of Grassy Pond Water Corporation Sanford, City of All of North Carolina →

Source, the EPA’s fifth Unregulated Contaminant Monitoring Rule, final dataset published 2026-10-15. Original data → Figures are the system’s own reported results. Water quality changes, and a result from the monitoring period is not a statement about what is in the tap today.