- PWSID
- TX2210001
- State
- Texas
- System type
- community water system (CWS)
- Population served
- 130,501
- City
- Abilene
- Counties
- Taylor County
- Primary source water
- surface water
- UCMR 5 sampling
- 2023-09-13 to 2024-06-27 · 3 entry point(s) · water types: SW
- Service-area boundary
- authoritative
PFOS ≥ 3 × its limit highest single result
PFOS ≥ 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
- West Central Texas Mwd (TX2150023)
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) | 7.7 | 6.85 | 4 |
| PFOS (ppt) | 30 | 25.27 | 4 |
| Hazard Index | 3.244 | 2.611 | 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 2023-09-13 to 2024-06-27 · 3 entry point(s) · water types: SW · 16 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2023-09-13 | Grimes/Northwest WTP (SW) | SE1 | 6.1 | 23.8 | 2.293 | PFBA 12.7, PFHpA 8.1, PFHxA 17.6, PFPeA 14, lithium 11.2 µg/L |
| 2023-09-13 | Hargesheimer/Southside WTP (SW) | SE1 | <4 | <4 | 0.904 | PFBA 6.5, PFHxA 3.1, lithium 48.1 µg/L |
| 2023-09-13 | Northeast Plant (SW) | SE1 | 7.5 | 30 | 2.794 | PFBA 14.3, PFHpA 10, PFHxA 21.7, PFPeA 17.7, lithium 12 µg/L |
| 2023-12-13 | Grimes/Northwest WTP (SW) | SE2 | n/a | n/a | n/a | none |
| 2023-12-13 | Hargesheimer/Southside WTP (SW) | SE2 | n/a | n/a | n/a | lithium 26.9 µg/L |
| 2023-12-13 | Northeast Plant (SW) | SE2 | n/a | n/a | n/a | lithium 10.8 µg/L |
| 2024-02-21 | Grimes/Northwest WTP (SW) | SE2 | 7.5 | 28.1 | 3.244 | PFBA 43.1, PFHpA 12, PFHxA 23.5, PFPeA 22.4, PFPeS 4.3 |
| 2024-02-21 | Hargesheimer/Southside WTP (SW) | SE2 | <4 | <4 | 0.472 | PFBA 19.4 |
| 2024-02-21 | Northeast Plant (SW) | SE2 | 7.7 | 28.9 | 3.244 | PFBA 22.2, PFHpA 12.4, PFHxA 23.4, PFPeA 22.9, PFPeS 4.5 |
| 2024-03-27 | Grimes/Northwest WTP (SW) | SE3 | 5.7 | 20 | 2.023 | PFBA 14.6, PFHpA 7.1, PFHxA 19.1, PFPeA 15.8, lithium 9.5 µg/L |
| 2024-03-27 | Hargesheimer/Southside WTP (SW) | SE3 | <4 | <4 | 0.683 | PFBA 7.5, lithium 28.9 µg/L |
| 2024-03-27 | Northeast Plant (SW) | SE3 | 5.1 | 16.6 | 1.783 | PFBA 14, PFHpA 7, PFHxA 14, PFPeA 12, lithium 9.6 µg/L |
| 2024-06-12 | Grimes/Northwest WTP (SW) | SE4 | 6.9 | 23.3 | 2.523 | PFBA 16.7, PFHpA 9, PFHxA 20.5, PFPeA 16.1, lithium 9.5 µg/L |
| 2024-06-12 | Hargesheimer/Southside WTP (SW) | SE4 | <4 | <4 | 0 | lithium 16.3 µg/L |
| 2024-06-12 | Northeast Plant (SW) | SE4 | 7.1 | 25.6 | 2.623 | PFBA 16.9, PFHpA 9.6, PFHxA 21.4, PFPeA 16.4, lithium 10.3 µg/L |
| 2024-06-27 | Northeast Plant (SW) | 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
360 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.
Grimes/Northwest WTP facility 58564 · sample point EP003MC3 · surface water
| Compound | MRL | 2023-09-13 SE1 | 2023-12-13 SE2 | 2024-02-21 SE2 | 2024-03-27 SE3 | 2024-06-12 SE4 |
|---|---|---|---|---|---|---|
| PFBA | 5 ppt | 12.7 | – | 43.1 | 14.6 | 16.7 |
| PFBS | 3 ppt | 6.2 | – | 8.2 | 5.6 | 6.7 |
| PFHpA | 3 ppt | 8.1 | – | 12 | 7.1 | 9 |
| PFHxA | 3 ppt | 17.6 | – | 23.5 | 19.1 | 20.5 |
| PFHxS | 3 ppt | 22.9 | – | 32.4 | 20.2 | 25.2 |
| PFOA | 4 ppt | 6.1 | – | 7.5 | 5.7 | 6.9 |
| PFOS | 4 ppt | 23.8 | – | 28.1 | 20 | 23.3 |
| PFPeA | 3 ppt | 14 | – | 22.4 | 15.8 | 16.1 |
| PFPeS | 4 ppt | < 4 | – | 4.3 | < 4 | < 4 |
| 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 |
| 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 |
| 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 | 11.2 | < 9 | – | 9.5 | 9.5 |
Hargesheimer/Southside WTP facility 61999 · sample point EP004MC4 · surface water
| Compound | MRL | 2023-09-13 SE1 | 2023-12-13 SE2 | 2024-02-21 SE2 | 2024-03-27 SE3 | 2024-06-12 SE4 |
|---|---|---|---|---|---|---|
| PFBA | 5 ppt | 6.5 | – | 19.4 | 7.5 | < 5 |
| PFBS | 3 ppt | 7.4 | – | 4.3 | 6.4 | < 3 |
| PFHxA | 3 ppt | 3.1 | – | < 3 | < 3 | < 3 |
| PFHxS | 3 ppt | 9 | – | 4.7 | 6.8 | < 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 |
| PFOS | 4 ppt | < 4 | – | < 4 | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | – | < 3 | < 3 | < 3 |
| 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 | 48.1 | 26.9 | – | 28.9 | 16.3 |
Northeast Plant facility 58563 · sample point EP002MC2 · surface water
| Compound | MRL | 2023-09-13 SE1 | 2023-12-13 SE2 | 2024-02-21 SE2 | 2024-03-27 SE3 | 2024-06-12 SE4 | 2024-06-27 SE4 |
|---|---|---|---|---|---|---|---|
| PFBA | 5 ppt | 14.3 | – | 22.2 | 14 | 16.9 | – |
| PFBS | 3 ppt | 7.4 | – | 8.2 | 5.1 | 6.9 | – |
| PFHpA | 3 ppt | 10 | – | 12.4 | 7 | 9.6 | – |
| PFHxA | 3 ppt | 21.7 | – | 23.4 | 14 | 21.4 | – |
| PFHxS | 3 ppt | 27.9 | – | 32.4 | 17.8 | 26.2 | – |
| PFOA | 4 ppt | 7.5 | – | 7.7 | 5.1 | 7.1 | – |
| PFOS | 4 ppt | 30 | – | 28.9 | 16.6 | 25.6 | – |
| PFPeA | 3 ppt | 17.7 | – | 22.9 | 12 | 16.4 | – |
| PFPeS | 4 ppt | < 4 | – | 4.5 | < 4 | < 4 | – |
| 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 | – |
| 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 | – |
| 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 | 12 | 10.8 | – | 9.6 | 10.3 | – |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| PFBA | 12 | 92% | 43.1 2024-02-21 | 15.66–16.07 | 14.3 | 16.9 | 22.2 | 43.1 |
| PFBS | 12 | 92% | 8.2 2024-02-21 | 6.03–6.28 | 6.4 | 7.4 | 8.2 | 8.2 |
| PFHxS | 12 | 92% | 32.4 2024-02-21 | 18.79–19.04 | 20.2 | 26.2 | 32.4 | 32.4 |
| lithium | 12 | 92% | 48.1 2023-09-13 | 16.09–16.84 | 10.8 | 16.3 | 28.9 | 48.1 |
| PFHxA | 12 | 75% | 23.5 2024-02-21 | 13.69–14.44 | 17.6 | 21.4 | 23.4 | 23.5 |
| PFHpA | 12 | 67% | 12.4 2024-02-21 | 6.27–7.27 | 7.1 | 9.6 | 12 | 12.4 |
| PFOA | 12 | 67% | 7.7 2024-02-21 | 4.47–5.8 | 5.7 | 7.1 | 7.5 | 7.7 |
| PFOS | 12 | 67% | 30 2023-09-13 | 16.36–17.69 | 20 | 25.6 | 28.9 | 30 |
| PFPeA | 12 | 67% | 22.9 2024-02-21 | 11.44–12.44 | 14 | 16.4 | 22.4 | 22.9 |
| PFPeS | 12 | 17% | 4.5 2024-02-21 | 0.73–4.07 | <MRL | <MRL | 4.3 | 4.5 |
Never detected (20): 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, PFNA, 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.