- PWSID
- TX0790005
- State
- Texas
- System type
- community water system (CWS)
- Population served
- 80,381
- City
- Sugar Land
- Counties
- Fort Bend County
- Primary source water
- surface water
- UCMR 5 sampling
- 2023-02-14 to 2023-11-14 · 7 entry point(s) · water types: GW;MX;SW
- Service-area boundary
- authoritative
PFOA 1–3 × its limit highest single result
PFOA 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
- First Colony Mud 9 (TX0790230)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0 - Fort Bend County Wcid 2 (TX0790004)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0.002 · detected: PFBA;PFBS;PFHxA;PFPeA - Fort Bend County Mud 128 (TX0790498)
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) | 4.1 | 1.02 | 4 |
| PFOS (ppt) | <MRL | 0 | 4 |
| Hazard Index | 0.003 | 0.001 | 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 2023-02-14 to 2023-11-14 · 7 entry point(s) · water types: GW;MX;SW · 22 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2023-02-14 | Austin Parkway WTP (GW) | SE1 | <4 | <4 | 0 | lithium 23.1 µg/L |
| 2023-02-14 | First Colony WTP (MX) | SE1 | <4 | <4 | 0 | PFPeA 8.8, lithium 10.1 µg/L |
| 2023-02-14 | Lakeview WTP (MX) | SE1 | <4 | <4 | 0 | PFPeA 4.9, lithium 25.5 µg/L |
| 2023-02-14 | Riverstone WTP (MX) | SE1 | <4 | <4 | 0 | PFPeA 6.2 |
| 2023-02-14 | Sugar Creek WTP (GW) | SE1 | <4 | <4 | 0 | lithium 32.2 µg/L |
| 2023-02-14 | Surface Water Treatment Plant (SW) | SE1 | <4 | <4 | 0 | PFPeA 9.9 |
| 2023-02-14 | Woodchester WTP (GW) | SE1 | <4 | <4 | 0 | lithium 27.3 µg/L |
| 2023-05-16 | First Colony WTP (MX) | SE2 | <4 | <4 | 0 | PFPeA 4.2, lithium 13.5 µg/L |
| 2023-05-16 | Lakeview WTP (MX) | SE2 | <4 | <4 | 0 | PFPeA 6.4, lithium 13 µg/L |
| 2023-05-16 | Riverstone WTP (MX) | SE2 | <4 | <4 | 0 | PFPeA 11.1 |
| 2023-05-16 | Surface Water Treatment Plant (SW) | SE2 | <4 | <4 | 0 | PFHxA 3, PFPeA 10.9 |
| 2023-08-14 | Austin Parkway WTP (GW) | SE2 | <4 | <4 | 0 | lithium 19.9 µg/L |
| 2023-08-14 | First Colony WTP (MX) | SE3 | <4 | <4 | 0 | PFPeA 46.7, lithium 20.9 µg/L |
| 2023-08-14 | Lakeview WTP (MX) | SE3 | <4 | <4 | 0 | PFPeA 37.1, lithium 23.3 µg/L |
| 2023-08-14 | Riverstone WTP (MX) | SE3 | <4 | <4 | 0.002 | PFBA 11.8, PFHxA 5.4, PFPeA 182, lithium 20.9 µg/L |
| 2023-08-14 | Sugar Creek WTP (GW) | SE2 | <4 | <4 | 0 | lithium 26.2 µg/L |
| 2023-08-14 | Surface Water Treatment Plant (SW) | SE3 | <4 | <4 | 0.003 | PFBA 12.3, PFHxA 6.2, PFPeA 170, lithium 20.5 µg/L |
| 2023-08-14 | Woodchester WTP (GW) | SE2 | <4 | <4 | 0 | lithium 29.2 µg/L |
| 2023-11-14 | First Colony WTP (MX) | SE4 | <4 | <4 | 0.003 | 6:2 FTS 653, ADONA 3.3, PFBA 58.3, PFHpA 3.6, PFHxA 12.9, PFPeA 355, lithium 18.6 µg/L |
| 2023-11-14 | Lakeview WTP (MX) | SE4 | <4 | <4 | 0 | PFPeA 17.5, lithium 21.8 µg/L |
| 2023-11-14 | Riverstone WTP (MX) | SE4 | 4.1 | <4 | 0.003 | 6:2 FTS 672, ADONA 3.4, PFBA 54.4, PFHpA 3.3, PFHxA 11.7, PFPeA 354, lithium 19.2 µg/L |
| 2023-11-14 | Surface Water Treatment Plant (SW) | SE4 | 4 | <4 | 0.003 | PFBA 74.8, PFHxA 12, PFPeA 358, lithium 16.9 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
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.
Austin Parkway WTP facility 79005 · sample point EP005MC · groundwater
| Compound | MRL | 2023-02-14 SE1 | 2023-08-14 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 | 23.1 | 19.9 |
First Colony WTP facility 79006 · sample point EP006MC · MX
| Compound | MRL | 2023-02-14 SE1 | 2023-05-16 SE2 | 2023-08-14 SE3 | 2023-11-14 SE4 |
|---|---|---|---|---|---|
| 6:2 FTS | 5 ppt | < 5 | < 5 | < 5 | 653 |
| ADONA | 3 ppt | < 3 | < 3 | < 3 | 3.3 |
| PFBA | 5 ppt | < 5 | < 5 | < 5 | 58.3 |
| PFBS | 3 ppt | < 3 | < 3 | < 3 | 5.7 |
| PFHpA | 3 ppt | < 3 | < 3 | < 3 | 3.6 |
| PFHxA | 3 ppt | < 3 | < 3 | < 3 | 12.9 |
| PFPeA | 3 ppt | 8.8 | 4.2 | 46.7 | 355 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| 8:2 FTS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 | < 2 | < 2 |
| 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 |
| 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 | 10.1 | 13.5 | 20.9 | 18.6 |
Lakeview WTP facility 50642 · sample point EP003MC · MX
| Compound | MRL | 2023-02-14 SE1 | 2023-05-16 SE2 | 2023-08-14 SE3 | 2023-11-14 SE4 |
|---|---|---|---|---|---|
| PFPeA | 3 ppt | 4.9 | 6.4 | 37.1 | 17.5 |
| 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 |
| PFBA | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| 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 | 25.5 | 13 | 23.3 | 21.8 |
Riverstone WTP facility 79009 · sample point EP009 · MX
| Compound | MRL | 2023-02-14 SE1 | 2023-05-16 SE2 | 2023-08-14 SE3 | 2023-11-14 SE4 |
|---|---|---|---|---|---|
| 6:2 FTS | 5 ppt | < 5 | < 5 | < 5 | 672 |
| ADONA | 3 ppt | < 3 | < 3 | < 3 | 3.4 |
| PFBA | 5 ppt | < 5 | < 5 | 11.8 | 54.4 |
| PFBS | 3 ppt | < 3 | < 3 | 4.9 | 5.8 |
| PFHpA | 3 ppt | < 3 | < 3 | < 3 | 3.3 |
| PFHxA | 3 ppt | < 3 | < 3 | 5.4 | 11.7 |
| PFOA | 4 ppt | < 4 | < 4 | < 4 | 4.1 |
| PFPeA | 3 ppt | 6.2 | 11.1 | 182 | 354 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| 8:2 FTS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 | < 2 | < 2 |
| 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 |
| 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 |
| 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 | 20.9 | 19.2 |
Sugar Creek WTP facility 50641 · sample point EP004MC · groundwater
| Compound | MRL | 2023-02-14 SE1 | 2023-08-14 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 | 32.2 | 26.2 |
Surface Water Treatment Plant facility 79008 · sample point EP008 · surface water
| Compound | MRL | 2023-02-14 SE1 | 2023-05-16 SE2 | 2023-08-14 SE3 | 2023-11-14 SE4 |
|---|---|---|---|---|---|
| PFBA | 5 ppt | < 5 | < 5 | 12.3 | 74.8 |
| PFBS | 3 ppt | < 3 | < 3 | 5.3 | 5.3 |
| PFHxA | 3 ppt | < 3 | 3 | 6.2 | 12 |
| PFOA | 4 ppt | < 4 | < 4 | < 4 | 4 |
| PFPeA | 3 ppt | 9.9 | 10.9 | 170 | 358 |
| 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 |
| 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 |
| 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 | 20.5 | 16.9 |
Woodchester WTP facility 50640 · sample point EP001MC · groundwater
| Compound | MRL | 2023-02-14 SE1 | 2023-08-14 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 | 27.3 | 29.2 |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| lithium | 22 | 82% | 32.2 2023-02-14 | 17.37–19 | 19.9 | 23.3 | 27.3 | 29.2 |
| PFPeA | 22 | 73% | 358 2023-11-14 | 71.94–72.76 | 8.8 | 46.7 | 354 | 355 |
| PFHxA | 22 | 27% | 12.9 2023-11-14 | 2.33–4.51 | <MRL | 3 | 11.7 | 12 |
| PFBA | 22 | 23% | 74.8 2023-11-14 | 9.62–13.48 | <MRL | <MRL | 54.4 | 58.3 |
| PFBS | 22 | 23% | 5.8 2023-11-14 | 1.23–3.55 | <MRL | <MRL | 5.3 | 5.7 |
| 6:2 FTS | 22 | 9% | 672 2023-11-14 | 60.23–64.77 | <MRL | <MRL | <MRL | 653 |
| ADONA | 22 | 9% | 3.4 2023-11-14 | 0.3–3.03 | <MRL | <MRL | <MRL | 3.3 |
| PFHpA | 22 | 9% | 3.6 2023-11-14 | 0.31–3.04 | <MRL | <MRL | <MRL | 3.3 |
| PFOA | 22 | 9% | 4.1 2023-11-14 | 0.37–4 | <MRL | <MRL | <MRL | 4 |
Never detected (21): 11Cl-PF3OUdS, 4:2 FTS, 8:2 FTS, 9Cl-PF3ONS, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFDA, PFDoA, PFEESA, PFHpS, PFHxS, PFMBA, PFMPA, PFNA, PFOS, 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.