- PWSID
- TX2460001
- State
- Texas
- System type
- community water system (CWS)
- Population served
- 191,639
- City
- Georgetown
- Counties
- Bell County, Burnet County, Williamson County
- Primary source water
- surface water
- UCMR 5 sampling
- 2023-06-14 to 2025-02-10 · 6 entry point(s) · water types: GU;GW;SW
- Service-area boundary
- authoritative
PFOS 1–3 × its limit highest single result
PFOS below 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 Leander (TX2460012)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0 · detected: PFBA - City Of Round Rock (TX2460003)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0.003 · detected: PFBA;PFBS;PFHxA;PFPeA - City Of Florence (TX2460005)
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) | 4.9 | 1.23 | 4 |
| PFOS (ppt) | 5.7 | 3.62 | 4 |
| Hazard Index | 0.472 | 0.302 | 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 2023-06-14 to 2025-02-10 · 6 entry point(s) · water types: GU;GW;SW · 24 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2023-06-14 | Domel WTP (GW) | SE1 | <4 | <4 | 0.003 | none |
| 2023-06-14 | Kauffman Loop Intertie (SW) | SE1 | <4 | <4 | 0.472 | PFBA 5.1, PFHxA 3.6, PFPeA 4.8, lithium 14.3 µg/L |
| 2023-06-14 | Lake Georgetown WTP (SW) | SE1 | <4 | <4 | 0.432 | PFHxA 3.3, PFPeA 4.3, lithium 15.4 µg/L |
| 2023-06-14 | Rabbit Hill Intertie (SW) | SE1 | <4 | <4 | 0.372 | PFHxA 3.1, PFPeA 4.6, lithium 15.3 µg/L |
| 2023-06-14 | San Gabriel Park WTP (GU) | SE1 | <4 | 4.6 | 0.365 | PFBA 6.1, PFHxA 3.4, PFPeA 5 |
| 2023-09-20 | Kauffman Loop Intertie (SW) | SE2 | <4 | <4 | 0 | none |
| 2023-09-20 | Lake Georgetown WTP (SW) | SE2 | <4 | <4 | 0.412 | PFBA 5.9, PFHxA 3.6, PFPeA 5.7, lithium 15 µg/L |
| 2023-09-20 | Rabbit Hill Intertie (SW) | SE2 | <4 | <4 | 0.432 | PFBA 5.1, PFHxA 3.1, PFPeA 5.5, lithium 15.1 µg/L |
| 2023-09-20 | San Gabriel Park WTP (GU) | SE2 | 4.9 | 5.7 | 0.434 | PFBA 9.1, PFHxA 10.1, PFPeA 18.7 |
| 2023-12-13 | Domel WTP (GW) | SE2 | <4 | <4 | 0.004 | PFBA 33.8 |
| 2023-12-13 | Kauffman Loop Intertie (SW) | SE3 | <4 | <4 | 0.352 | PFBA 23, PFHxA 3.7, PFPeA 5.8, lithium 17.4 µg/L |
| 2023-12-13 | Lake Georgetown WTP (SW) | SE3 | <4 | <4 | 0.362 | PFBA 22.3, PFHxA 3.7, PFPeA 5.7, lithium 17.3 µg/L |
| 2023-12-13 | Rabbit Hill Intertie (SW) | SE3 | <4 | <4 | 0.372 | PFBA 23.2, PFHxA 3.7, PFPeA 5.8, lithium 16.7 µg/L |
| 2023-12-13 | San Gabriel Park WTP (GU) | SE3 | <4 | 4.2 | 0.305 | PFBA 7.7, PFHxA 3.4, PFPeA 6.1 |
| 2024-03-14 | Kauffman Loop Intertie (SW) | SE4 | n/a | n/a | n/a | lithium 11.9 µg/L |
| 2024-03-14 | Lake Georgetown WTP (SW) | SE4 | <4 | <4 | 0.002 | PFPeA 4.8, lithium 13.4 µg/L |
| 2024-03-14 | San Gabriel Park WTP (GU) | SE4 | <4 | <4 | 0.004 | PFPeA 5.6 |
| 2024-03-14 | Southside WTP (GU) | SE1 | <4 | <4 | 0.003 | PFPeA 4.6 |
| 2024-06-11 | Kauffman Loop Intertie (SW) | SE4 | <4 | <4 | 0 | PFPeA 3.5 |
| 2024-06-11 | Southside WTP (GU) | SE2 | <4 | <4 | 0.003 | PFBA 5.2, PFPeA 3.6 |
| 2024-09-23 | Rabbit Hill Intertie (SW) | SE4 | <4 | <4 | 0 | PFBA 5.9, PFPeA 3.7 |
| 2024-09-23 | Southside WTP (GU) | SE3 | <4 | <4 | 0.004 | PFBA 6.1, PFPeA 5.2 |
| 2024-12-10 | Southside WTP (GU) | SE4 | <4 | <4 | 0.003 | PFPeA 4.2 |
| 2025-02-10 | Southside WTP (GU) | SE4 | n/a | n/a | n/a | none |
“<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
660 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.
Domel WTP facility 005 · sample point 005 · groundwater
| Compound | MRL | 2023-06-14 SE1 | 2023-12-13 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | < 5 | 33.8 |
| PFBS | 3 ppt | 6.5 | 7.3 |
| 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 |
| 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 | < 9 | < 9 |
Kauffman Loop Intertie facility 00010 · sample point 010 · surface water
| Compound | MRL | 2023-06-14 SE1 | 2023-09-20 SE2 | 2023-12-13 SE3 | 2024-03-14 SE4 | 2024-06-11 SE4 |
|---|---|---|---|---|---|---|
| PFBA | 5 ppt | 5.1 | < 5 | 23 | – | < 5 |
| PFBS | 3 ppt | 4.5 | < 3 | 5.1 | – | < 3 |
| PFHxA | 3 ppt | 3.6 | < 3 | 3.7 | – | < 3 |
| PFHxS | 3 ppt | 4.7 | < 3 | 3.5 | – | < 3 |
| PFPeA | 3 ppt | 4.8 | < 3 | 5.8 | – | 3.5 |
| 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 |
| PFOS | 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 | 14.3 | < 9 | 17.4 | 11.9 | – |
Lake Georgetown WTP facility 59546 · sample point EP001MC1 · surface water
| Compound | MRL | 2023-06-14 SE1 | 2023-09-20 SE2 | 2023-12-13 SE3 | 2024-03-14 SE4 |
|---|---|---|---|---|---|
| PFBA | 5 ppt | < 5 | 5.9 | 22.3 | < 5 |
| PFBS | 3 ppt | 3.7 | 4.3 | 4.5 | 3.1 |
| PFHxA | 3 ppt | 3.3 | 3.6 | 3.7 | < 3 |
| PFHxS | 3 ppt | 4.3 | 4.1 | 3.6 | < 3 |
| PFPeA | 3 ppt | 4.3 | 5.7 | 5.7 | 4.8 |
| 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 |
| PFOS | 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 | 15.4 | 15 | 17.3 | 13.4 |
Rabbit Hill Intertie facility 00008 · sample point 008 · surface water
| Compound | MRL | 2023-06-14 SE1 | 2023-09-20 SE2 | 2023-12-13 SE3 | 2024-09-23 SE4 |
|---|---|---|---|---|---|
| PFBA | 5 ppt | < 5 | 5.1 | 23.2 | 5.9 |
| PFBS | 3 ppt | 4.4 | 3.9 | 4.9 | < 3 |
| PFHxA | 3 ppt | 3.1 | 3.1 | 3.7 | < 3 |
| PFHxS | 3 ppt | 3.7 | 4.3 | 3.7 | < 3 |
| PFPeA | 3 ppt | 4.6 | 5.5 | 5.8 | 3.7 |
| 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 |
| PFOS | 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 | 15.3 | 15.1 | 16.7 | < 9 |
San Gabriel Park WTP facility 59547 · sample point EP002MC2 · groundwater under the influence of surface water
| Compound | MRL | 2023-06-14 SE1 | 2023-09-20 SE2 | 2023-12-13 SE3 | 2024-03-14 SE4 |
|---|---|---|---|---|---|
| PFBA | 5 ppt | 6.1 | 9.1 | 7.7 | < 5 |
| PFBS | 3 ppt | 9.6 | 9 | 9.6 | 7.7 |
| PFHxA | 3 ppt | 3.4 | 10.1 | 3.4 | < 3 |
| PFHxS | 3 ppt | 3.6 | 4.3 | 3 | < 3 |
| PFOA | 4 ppt | < 4 | 4.9 | < 4 | < 4 |
| PFOS | 4 ppt | 4.6 | 5.7 | 4.2 | < 4 |
| PFPeA | 3 ppt | 5 | 18.7 | 6.1 | 5.6 |
| 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 |
| 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 | < 9 | < 9 | < 9 |
Southside WTP facility 62042 · sample point EP004MC4 · groundwater under the influence of surface water
| Compound | MRL | 2024-03-14 SE1 | 2024-06-11 SE2 | 2024-09-23 SE3 | 2024-12-10 SE4 | 2025-02-10 SE4 |
|---|---|---|---|---|---|---|
| PFBA | 5 ppt | < 5 | 5.2 | 6.1 | < 5 | – |
| PFBS | 3 ppt | 6.8 | 5.4 | 8.5 | 6.8 | – |
| PFPeA | 3 ppt | 4.6 | 3.6 | 5.2 | 4.2 | – |
| 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 | – |
| PFHxA | 3 ppt | < 3 | < 3 | < 3 | < 3 | – |
| PFHxS | 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 | – |
| PFOS | 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 | < 9 | < 9 | < 9 | – |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| PFBS | 22 | 86% | 9.6 2023-06-14 | 5.25–5.66 | 4.9 | 7.3 | 9 | 9.6 |
| PFPeA | 22 | 86% | 18.7 2023-09-20 | 4.87–5.28 | 4.8 | 5.7 | 5.8 | 6.1 |
| PFBA | 22 | 59% | 33.8 2023-12-13 | 7.2–9.25 | 5.1 | 7.7 | 23 | 23.2 |
| PFHxA | 22 | 50% | 10.1 2023-09-20 | 2.03–3.53 | <MRL | 3.6 | 3.7 | 3.7 |
| PFHxS | 22 | 50% | 4.7 2023-06-14 | 1.95–3.45 | <MRL | 3.7 | 4.3 | 4.3 |
| lithium | 22 | 46% | 17.4 2023-12-13 | 6.9–11.81 | <MRL | 15.1 | 16.7 | 17.3 |
| PFOS | 22 | 14% | 5.7 2023-09-20 | 0.66–4.11 | <MRL | <MRL | 4.2 | 4.6 |
| PFOA | 22 | 4% | 4.9 2023-09-20 | 0.22–4.04 | <MRL | <MRL | <MRL | <MRL |
Never detected (22): 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, 8:2 FTS, 9Cl-PF3ONS, ADONA, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFDA, PFDoA, PFEESA, PFHpA, PFHpS, PFMBA, PFMPA, PFNA, PFPeS, PFTA, PFTrDA, PFUnA.
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.