- PWSID
- TX2270033
- State
- Texas
- System type
- community water system (CWS)
- Population served
- 39,648
- City
- Coupland
- Counties
- Travis County, Williamson County
- Primary source water
- surface water (purchased)
- UCMR 5 sampling
- 2023-02-22 to 2023-11-20 · 9 entry point(s) · water types: GW;SW
- Service-area boundary
- authoritative
Hazard Index ≥ 3 × its limit highest single result
PFOS 1–3 × its limit worst entry-point average
Open on the Texas map · All Texas systems · All results
These are monitoring results collected under EPA's Fifth Unregulated Contaminant Monitoring Rule (UCMR 5) at entry points, where treated water enters the distribution system; they are not tap-water samples. They are not compliance determinations: compliance with EPA's 2024 PFAS limits is judged on running annual averages of compliance monitoring, required from 2029, so a single UCMR 5 result at or above a limit is not a violation. “< MRL” means the compound was not quantified at EPA's minimum reporting level; it does not mean zero.
Water purchased from
- City Of Pflugerville (TX2270014)
Seller's highest results: PFOA 6.3 ppt · PFOS 14.4 ppt · HI 3.195 · detected: PFBA;PFBS;PFHpA;PFHxA;PFHxS;PFNA;PFOA;PFOS;PFPeA;PFUnA - 130 Regional Wsc (TX0260049)
Seller not monitored under UCMR 5.
Seller results are the seller's own entry-point samples, not measurements of this system's water. This system's own samples (below) may reflect purchased water, its own sources, or both.
Compared with EPA's 2024 values
| Highest single result | Worst entry-point average* | Limit | |
|---|---|---|---|
| PFOA (ppt) | 5.9 | 2.95 | 4 |
| PFOS (ppt) | 12.4 | 11 | 4 |
| Hazard Index | 3.135 | 2.345 | 1.0† |
“<MRL” = every result for the compound was below its reporting limit. * Mean of all samples at each entry point with non-detects = 0 (EPA compliance convention; the Hazard Index also uses non-detects = 0); a screening comparison, not a formal running annual average. † Rescission proposed May 2026. PFOA/PFOS MCL 4 ppt (2024 NPDWR, in effect). PFHxS, PFNA, HFPO-DA (10 ppt each) and the Hazard Index (1.0) are 2024 NPDWR values; EPA proposed rescinding them on 18 May 2026 (comment period closed 20 Jul 2026).
No Texas PFAS drinking-water standard in effect or proposed as of 2026-10-17: No state PFAS drinking-water standard; TCEQ implementing federal NPDWR (BCLP state survey, Jan 2026).
Sampling history
Sampled 2023-02-22 to 2023-11-20 · 9 entry point(s) · water types: GW;SW · 20 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2023-02-22 | CR 404 Taylor (GW) | SE1 | <4 | <4 | 0 | lithium 24.2 µg/L |
| 2023-02-22 | EP11008-09 East & West (SW) | SE1 | <4 | 4.1 | 0.362 | PFBA 5.1, PFHxA 3.9, PFPeA 6.8 |
| 2023-02-22 | FM 685 Site (GW) | SE1 | <4 | 5.4 | 1.192 | PFHxA 3.4, PFPeA 3.5, lithium 35.2 µg/L |
| 2023-02-22 | Gregg Lane (GW) | SE1 | <4 | <4 | 0 | lithium 11.7 µg/L |
| 2023-02-22 | Springbrook (GW) | SE1 | <4 | <4 | 0 | lithium 83.8 µg/L |
| 2023-02-22 | Tacon Plant (GW) | SE1 | 5.9 | 12.4 | 3.135 | PFBA 7.4, PFHpA 4.3, PFHxA 8.7, PFPeA 9.1, PFUnA 2.7 |
| 2023-02-22 | Type (GW) | SE1 | <4 | <4 | 0 | lithium 37 µg/L |
| 2023-02-22 | Wells 4A & 4B (GW) | SE1 | <4 | 4 | 0.452 | lithium 21.7 µg/L |
| 2023-02-28 | 170 Site (GW) | SE1 | <4 | <4 | 0 | lithium 16.5 µg/L |
| 2023-05-18 | EP11008-09 East & West (SW) | SE2 | <4 | <4 | 0 | lithium 28.2 µg/L |
| 2023-08-30 | 170 Site (GW) | SE2 | <4 | <4 | 0 | PFPeA 6.1, lithium 23.8 µg/L |
| 2023-08-30 | CR 404 Taylor (GW) | SE2 | <4 | <4 | 0 | lithium 23.2 µg/L |
| 2023-08-30 | EP11008-09 East & West (SW) | SE3 | <4 | <4 | 0 | lithium 21.5 µg/L |
| 2023-08-30 | FM 685 Site (GW) | SE2 | <4 | 5.1 | 0.433 | PFPeA 3, lithium 26.1 µg/L |
| 2023-08-30 | Gregg Lane (GW) | SE2 | <4 | <4 | 0 | lithium 13.3 µg/L |
| 2023-08-30 | Springbrook (GW) | SE2 | <4 | <4 | 0.002 | lithium 58.8 µg/L |
| 2023-08-30 | Tacon Plant (GW) | SE2 | <4 | 9.6 | 1.555 | PFBA 5.5, PFHxA 4.2, PFPeA 5.9 |
| 2023-08-30 | Type (GW) | SE2 | <4 | <4 | 0 | lithium 38.2 µg/L |
| 2023-08-30 | Wells 4A & 4B (GW) | SE2 | <4 | 4.9 | 0.453 | PFPeA 3, lithium 17.1 µg/L |
| 2023-11-20 | EP11008-09 East & West (SW) | SE4 | <4 | <4 | 0 | lithium 23.6 µg/L |
“<4” = not detected at the reporting limit shown; “n/a” = not analyzed in that sample. Highlighted = at or above the 4 ppt MCL. HI computed per sample with non-detects as 0. Other detections lists every other quantified compound (lithium in µg/L).
All results by entry point
600 results. Each column is one sampling visit (date and UCMR 5 sample event). A number is a measured concentration; “< 4” = below the minimum reporting level shown; “–” = not analyzed in that visit. PFAS in ppt (ng/L); lithium in µg/L.
170 Site facility 11002 · sample point EP002MWSC · groundwater
| Compound | MRL | 2023-02-28 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| PFPeA | 3 ppt | < 3 | 6.1 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 16.5 | 23.8 |
CR 404 Taylor facility 11009 · sample point EP0009 · groundwater
| Compound | MRL | 2023-02-22 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 24.2 | 23.2 |
EP11008-09 East & West facility 11008 · sample point EP0008MWSC · surface water
| Compound | MRL | 2023-02-22 SE1 | 2023-05-18 SE2 | 2023-08-30 SE3 | 2023-11-20 SE4 |
|---|---|---|---|---|---|
| PFBA | 5 ppt | 5.1 | < 5 | < 5 | < 5 |
| PFBS | 3 ppt | 4.4 | < 3 | < 3 | < 3 |
| PFHxA | 3 ppt | 3.9 | < 3 | < 3 | < 3 |
| PFHxS | 3 ppt | 3.6 | < 3 | < 3 | < 3 |
| PFOS | 4 ppt | 4.1 | < 4 | < 4 | < 4 |
| PFPeA | 3 ppt | 6.8 | < 3 | < 3 | < 3 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 | < 6 | < 6 |
| PFDA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFPeS | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 | < 2 | < 2 |
| lithium | 9 µg/L | < 9 | 28.2 | 21.5 | 23.6 |
FM 685 Site facility 11007 · sample point EP007MWSC · groundwater
| Compound | MRL | 2023-02-22 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | 5.1 | 5.3 |
| PFHxA | 3 ppt | 3.4 | < 3 |
| PFHxS | 3 ppt | 3.9 | 4.3 |
| PFNA | 4 ppt | 8 | < 4 |
| PFOS | 4 ppt | 5.4 | 5.1 |
| PFPeA | 3 ppt | 3.5 | 3 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 35.2 | 26.1 |
Gregg Lane facility 11010 · sample point EP005 · groundwater
| Compound | MRL | 2023-02-22 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 11.7 | 13.3 |
Springbrook facility 11003 · sample point EP003MWSC · groundwater
| Compound | MRL | 2023-02-22 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | < 3 | 3 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 83.8 | 58.8 |
Tacon Plant facility 11001 · sample point EP001MWSC · groundwater
| Compound | MRL | 2023-02-22 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | 7.4 | 5.5 |
| PFBS | 3 ppt | 10 | 9.2 |
| PFHpA | 3 ppt | 4.3 | < 3 |
| PFHxA | 3 ppt | 8.7 | 4.2 |
| PFHxS | 3 ppt | 7 | 6.7 |
| PFNA | 4 ppt | 24.3 | 8.8 |
| PFOA | 4 ppt | 5.9 | < 4 |
| PFOS | 4 ppt | 12.4 | 9.6 |
| PFPeA | 3 ppt | 9.1 | 5.9 |
| PFUnA | 2 ppt | 2.7 | < 2 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| lithium | 9 µg/L | < 9 | < 9 |
Type facility 11006 · sample point EP006MWSC · groundwater
| Compound | MRL | 2023-02-22 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 37 | 38.2 |
Wells 4A & 4B facility 58697 · sample point EP004MC · groundwater
| Compound | MRL | 2023-02-22 SE1 | 2023-08-30 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | 4.7 | 5.8 |
| PFHxS | 3 ppt | 4.5 | 4.5 |
| PFOS | 4 ppt | 4 | 4.9 |
| PFPeA | 3 ppt | < 3 | 3 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 21.7 | 17.1 |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| lithium | 20 | 85% | 83.8 2023-02-22 | 25.2–26.55 | 23.2 | 28.2 | 38.2 | 58.8 |
| PFBS | 20 | 40% | 10 2023-02-22 | 2.38–4.17 | <MRL | 4.7 | 5.8 | 9.2 |
| PFHxS | 20 | 35% | 7 2023-02-22 | 1.73–3.67 | <MRL | 3.9 | 4.5 | 6.7 |
| PFOS | 20 | 35% | 12.4 2023-02-22 | 2.27–4.88 | <MRL | 4.1 | 5.4 | 9.6 |
| PFPeA | 20 | 35% | 9.1 2023-02-22 | 1.87–3.82 | <MRL | 3 | 6.1 | 6.8 |
| PFHxA | 20 | 20% | 8.7 2023-02-22 | 1.01–3.41 | <MRL | <MRL | 3.9 | 4.2 |
| PFBA | 20 | 15% | 7.4 2023-02-22 | 0.9–5.15 | <MRL | <MRL | 5.1 | 5.5 |
| PFNA | 20 | 15% | 24.3 2023-02-22 | 2.06–5.46 | <MRL | <MRL | 8 | 8.8 |
| PFHpA | 20 | 5% | 4.3 2023-02-22 | 0.21–3.06 | <MRL | <MRL | <MRL | <MRL |
| PFOA | 20 | 5% | 5.9 2023-02-22 | 0.29–4.09 | <MRL | <MRL | <MRL | <MRL |
| PFUnA | 20 | 5% | 2.7 2023-02-22 | 0.14–2.04 | <MRL | <MRL | <MRL | <MRL |
Never detected (19): 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, 8:2 FTS, 9Cl-PF3ONS, ADONA, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFDA, PFDoA, PFEESA, PFHpS, PFMBA, PFMPA, PFPeS, PFTA, PFTrDA.
Left-censored Kaplan–Meier statistics (Helsel 2005; Helsel & Lee 2006, NADA for R). Units: ppt; lithium µg/L. Each compound has one reporting limit, so the Kaplan–Meier mean equals the upper mean bound (non-detects at the MRL); the lower bound sets non-detects to 0. “<MRL” = the percentile falls below the reporting limit and cannot be estimated. These describe this system's UCMR 5 samples, not population estimates.
Sources
- EPA UCMR 5 occurrence data text files (UCMR5_All.txt; samples 2023-01-09 to 2026-06-16; data summary dated Jul 2026)
- EPA SDWIS via ECHO SDWA downloads, quarter 2026Q3
- EPA Public Water System Service Areas v3 (Mar 2026)
- US Census Bureau cartographic boundary counties 1:500k, 2024
- EPA/USGS NHDPlus V2 (medium resolution) flowlines, Strahler order 2+
Data build a6f3d99247ed · 2026-10-18T04:13Z · UCMR 5 release Jul2026 · SDWIS 2026Q3. Data and methods.