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Is there PFAS in Walker County Water Authority water?

Yes. EPA's final UCMR 5 results show Walker County Water Authority averaged 10.9 ppt of PFOS at its worst sampling point, 2.7 times the EPA limit of 4 ppt.

Walker County Water Authority Serves 36,000 people · 10 PFOA samples from 4 sampling points · Mar 2024 to Dec 2024 Average above an EPA limit
PFOA Perfluorooctanoic acid 7.1 ppt avg · max 12.0
EPA 4
PFOS Perfluorooctanesulfonic acid 10.9 ppt avg · max 22.0
EPA 4
Hazard index GenX, PFBS, PFNA, PFHxS combined 0.0 avg · max 0.0
EPA 1

Also detected, no federal limit: PFBS, PFPeA, 6:2 FTS, PFHxA, PFHpA.

Averages are for the worst sampling point, with non-detects counted as zero. Source: EPA UCMR 5.

Walker County Water Authority is a public water system drawing on surface water, based in Flintstone, Georgia, serving about 36,000 people. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 10 times across 4 sampling points between Mar 2024 and Dec 2024.

Every PFAS detected

PFAS Detected Highest Worst point avg EPA limit
PFBS
Perfluorobutanesulfonic acid		 8 of 10 31.0 ppt 25.0 ppt none
PFOS
Perfluorooctanesulfonic acid		 5 of 10 22.0 ppt 10.9 ppt 4 ppt
PFOA
Perfluorooctanoic acid		 6 of 10 12.0 ppt 7.1 ppt 4 ppt
PFPeA
Perfluoropentanoic acid		 8 of 10 6.9 ppt 4.7 ppt none
6:2 FTS
6:2 fluorotelomer sulfonic acid		 1 of 10 5.1 ppt 2.6 ppt none
PFHxA
Perfluorohexanoic acid		 4 of 10 4.7 ppt 2.0 ppt none
PFHpA
Perfluoroheptanoic acid		 1 of 10 3.8 ppt 0.9 ppt none

Not detected: PFUnA, 8:2 FTS, PFMPA, PFMBA, PFEESA, NMeFOSAA, PFHpS, PFPeS, 11Cl-PF3OUdS, PFTrDA, NFDHA, PFTA, NEtFOSAA, 9Cl-PF3ONS, 4:2 FTS, PFNA, ADONA, HFPO-DA, PFBA, PFDA, PFDoA, PFHxS.

Lithium, tested in the same program: not detected.

What the EPA limits mean here

In April 2024 EPA set enforceable limits of 4 ppt for PFOA and PFOS, 10 ppt each for PFHxS, PFNA and GenX, and a hazard index of 1 for mixtures. Utilities were given until 2029 to comply. In May 2026 EPA proposed keeping only the PFOA and PFOS limits and moving that deadline to 2031. Until that proposal is final, the 2024 limits stand.

Compliance is judged on a running annual average at each entry point, so we show the average at this system's worst sampling point next to its single highest result. UCMR 5 results do not by themselves put a utility in or out of compliance.

What you can do at home

Two routes work for PFAS. For drinking and cooking water only, a reverse osmosis system certified to NSF/ANSI 58 with a PFOA/PFOS reduction claim is the cheapest proven option. To treat every tap and shower, a whole-house carbon system with enough contact time works, but check that the maker has PFAS test data, not just a marketing claim. See the best filters for PFAS and how PFAS removal works.

Other systems in Georgia

All 256 tested systems in Georgia

ZIP codes served

30707

As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.

Cite this page

Well & Tap. "PFAS in Walker County Water Authority water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID GA2950003. https://wellandtap.com/pfas/georgia/walker-county-water-authority/

About this data

Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID GA2950003). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.