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Is there PFAS in Hernando CO Utl-west water?

Yes. EPA's final UCMR 5 results show Hernando CO Utl-west averaged 7.9 ppt of PFOS at its worst sampling point, 2.0 times the EPA limit of 4 ppt.

Hernando CO Utl-west Serves 145,204 people · 22 PFOA samples from 11 sampling points · Apr 2024 to Oct 2024 Average above an EPA limit
PFOA Perfluorooctanoic acid 2.2 ppt avg · max 4.4
EPA 4
PFOS Perfluorooctanesulfonic acid 7.9 ppt avg · max 8.6
EPA 4
PFHxS Perfluorohexanesulfonic acid 1.6 ppt avg · max 3.3
EPA 10
Hazard index GenX, PFBS, PFNA, PFHxS combined 0.2 avg · max 0.3
EPA 1

Also detected, no federal limit: PFBS, PFPeA, PFHxA.

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

Hernando CO Utl-west is a public water system drawing on groundwater, based in Brooksville, Florida, serving about 145,204 people, including Brooksville, Spring Hill. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 22 times across 11 sampling points between Apr 2024 and Oct 2024.

Every PFAS detected

PFAS Detected Highest Worst point avg EPA limit
PFOS
Perfluorooctanesulfonic acid		 9 of 22 8.6 ppt 7.9 ppt 4 ppt
PFBS
Perfluorobutanesulfonic acid		 14 of 22 7.2 ppt 6.1 ppt none
PFPeA
Perfluoropentanoic acid		 7 of 22 5.7 ppt 4.4 ppt none
PFOA
Perfluorooctanoic acid		 2 of 22 4.4 ppt 2.2 ppt 4 ppt
PFHxA
Perfluorohexanoic acid		 2 of 22 4.3 ppt 2.1 ppt none
PFHxS
Perfluorohexanesulfonic acid		 1 of 22 3.3 ppt 1.6 ppt 10 ppt

Not detected: 6:2 FTS, PFHpA, PFNA, PFDA, PFDoA, PFUnA, 9Cl-PF3ONS, PFBA, 11Cl-PF3OUdS, 4:2 FTS, 8:2 FTS, PFMPA, PFMBA, PFEESA, NFDHA, PFPeS, PFHpS, PFTA, HFPO-DA, PFTrDA, NEtFOSAA, ADONA, NMeFOSAA.

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 Florida

All 409 tested systems in Florida

ZIP codes served

34601 34604 34606 34607 34608 34609 34613 34614

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 Hernando CO Utl-west water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID FL6277059. https://wellandtap.com/pfas/florida/hernando-co-utl-west/

About this data

Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID FL6277059). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.