- PWSID
- AK2210906
- State
- Alaska
- System type
- community water system (CWS)
- Population served
- 221,351
- City
- Anchorage
- Counties
- Anchorage Municipality
- Primary source water
- surface water
- UCMR 5 sampling
- 2023-01-23 to 2023-10-03 · 11 entry point(s) · water types: GW;SW
- Service-area boundary
- authoritative
PFOA 1–3 × its limit highest single result
PFOA 1–3 × its limit worst entry-point average
Open on the Alaska map · All Alaska 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.
Compared with EPA's 2024 values
| Highest single result | Worst entry-point average* | Limit | |
|---|---|---|---|
| PFOA (ppt) | 9.1 | 4.55 | 4 |
| PFOS (ppt) | <MRL | 0 | 4 |
| Hazard Index | 1.12 | 0.735 | 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 Alaska PFAS drinking-water standard in effect or proposed as of 2026-10-17: No Alaska-specific PFAS standard for public water systems; DEC Drinking Water Program implements the federal NPDWR (DEC PFAS page, revised 2025-10-29).
Sampling history
Sampled 2023-01-23 to 2023-10-03 · 11 entry point(s) · water types: GW;SW · 33 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2023-01-23 | Eklutna WTF (SW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-23 | Ship Creek TP (SW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-24 | Well #13 TP (GW) | SE1 | 9.1 | <4 | 1.12 | none |
| 2023-01-24 | Wells #26 & #27 TP (GW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-25 | Well #10 TP (GW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-25 | Well #11 TP (GW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-25 | Well #25 TP (Military) (GW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-25 | Well #4 TP (GW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-25 | Well #7 TP (GW) | SE1 | <4 | <4 | 0 | none |
| 2023-01-25 | Well #9 TP (GW) | SE1 | <4 | <4 | 0.48 | none |
| 2023-01-31 | Well # 12 TP (GW) | SE1 | <4 | <4 | 0 | none |
| 2023-04-14 | Eklutna WTF (SW) | SE2 | n/a | n/a | n/a | none |
| 2023-04-14 | Ship Creek TP (SW) | SE2 | n/a | n/a | n/a | none |
| 2023-07-17 | Eklutna WTF (SW) | SE3 | <4 | <4 | 0 | none |
| 2023-07-17 | Ship Creek TP (SW) | SE3 | <4 | <4 | 0 | none |
| 2023-07-17 | Well #10 TP (GW) | SE2 | <4 | <4 | 0 | none |
| 2023-07-17 | Well #11 TP (GW) | SE2 | <4 | <4 | 0 | none |
| 2023-07-17 | Well #25 TP (Military) (GW) | SE2 | <4 | <4 | 0 | none |
| 2023-07-18 | Eklutna WTF (SW) | SE3 | n/a | n/a | n/a | none |
| 2023-07-18 | Ship Creek TP (SW) | SE3 | n/a | n/a | n/a | none |
| 2023-07-18 | Well #10 TP (GW) | SE2 | n/a | n/a | n/a | none |
| 2023-07-18 | Well #11 TP (GW) | SE2 | n/a | n/a | n/a | none |
| 2023-07-18 | Well #25 TP (Military) (GW) | SE2 | n/a | n/a | n/a | none |
| 2023-07-18 | Well #4 TP (GW) | SE2 | <4 | <4 | 0 | none |
| 2023-07-18 | Wells #26 & #27 TP (GW) | SE2 | <4 | <4 | 0 | none |
| 2023-07-25 | Well # 12 TP (GW) | SE2 | n/a | n/a | n/a | none |
| 2023-07-25 | Well #13 TP (GW) | SE2 | n/a | n/a | n/a | none |
| 2023-07-25 | Well #7 TP (GW) | SE2 | <4 | <4 | 0 | none |
| 2023-07-25 | Well #9 TP (GW) | SE2 | <4 | <4 | 0.46 | none |
| 2023-09-14 | Well # 12 TP (GW) | SE2 | <4 | <4 | 0 | none |
| 2023-09-14 | Well #13 TP (GW) | SE2 | <4 | <4 | 0.35 | none |
| 2023-10-03 | Eklutna WTF (SW) | SE4 | <4 | <4 | 0 | none |
| 2023-10-03 | Ship Creek TP (SW) | SE4 | <4 | <4 | 0 | 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
707 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.
Eklutna WTF facility 32598 · sample point 34504 · surface water
| Compound | MRL | 2023-01-23 SE1 | 2023-04-14 SE2 | 2023-07-17 SE3 | 2023-07-18 SE3 | 2023-10-03 SE4 |
|---|---|---|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | – | < 5 | – | < 5 |
| 4:2 FTS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| 6:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 |
| 8:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | – | < 2 | – | < 2 |
| ADONA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| HFPO-DA | 5 ppt | < 5 | – | < 5 | – | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 | < 5 | – | < 5 |
| NFDHA | 20 ppt | < 20 | – | < 20 | – | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 | < 6 | – | < 6 |
| PFBA | 5 ppt | < 5 | – | < 5 | – | < 5 |
| PFBS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFDA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFDoA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFEESA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHpA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHpS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHxA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHxS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFMBA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFMPA | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFNA | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFOA | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFOS | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFPeA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFPeS | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFTA | 8 ppt | < 8 | < 8 | < 8 | – | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 | < 7 | – | < 7 |
| PFUnA | 2 ppt | < 2 | – | < 2 | – | < 2 |
| lithium | 9 µg/L | – | – | – | < 9 | – |
Ship Creek TP facility 32655 · sample point 34501 · surface water
| Compound | MRL | 2023-01-23 SE1 | 2023-04-14 SE2 | 2023-07-17 SE3 | 2023-07-18 SE3 | 2023-10-03 SE4 |
|---|---|---|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | – | < 5 | – | < 5 |
| 4:2 FTS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| 6:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 |
| 8:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | – | < 2 | – | < 2 |
| ADONA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| HFPO-DA | 5 ppt | < 5 | – | < 5 | – | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 | < 5 | – | < 5 |
| NFDHA | 20 ppt | < 20 | – | < 20 | – | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 | < 6 | – | < 6 |
| PFBA | 5 ppt | < 5 | – | < 5 | – | < 5 |
| PFBS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFDA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFDoA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFEESA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHpA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHpS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHxA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFHxS | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFMBA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFMPA | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFNA | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFOA | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFOS | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFPeA | 3 ppt | < 3 | – | < 3 | – | < 3 |
| PFPeS | 4 ppt | < 4 | – | < 4 | – | < 4 |
| PFTA | 8 ppt | < 8 | < 8 | < 8 | – | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 | < 7 | – | < 7 |
| PFUnA | 2 ppt | < 2 | – | < 2 | – | < 2 |
| lithium | 9 µg/L | – | – | – | < 9 | – |
Well # 12 TP facility 46243 · sample point 37152 · groundwater
| Compound | MRL | 2023-01-31 SE1 | 2023-07-25 SE2 | 2023-09-14 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 | – | – |
| NFDHA | 20 ppt | < 20 | – | < 20 |
| NMeFOSAA | 6 ppt | < 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 | – | – |
| PFTrDA | 7 ppt | < 7 | – | – |
| PFUnA | 2 ppt | < 2 | – | < 2 |
| lithium | 9 µg/L | – | < 9 | – |
Well #10 TP facility 47658 · sample point 37158 · groundwater
| Compound | MRL | 2023-01-25 SE1 | 2023-07-17 SE2 | 2023-07-18 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 | – | – | < 9 |
Well #11 TP facility 47659 · sample point 37159 · groundwater
| Compound | MRL | 2023-01-25 SE1 | 2023-07-17 SE2 | 2023-07-18 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 | – | – | < 9 |
Well #13 TP facility 47660 · sample point 37153 · groundwater
| Compound | MRL | 2023-01-24 SE1 | 2023-07-25 SE2 | 2023-09-14 SE2 |
|---|---|---|---|---|
| PFHxS | 3 ppt | 11.2 | – | 3.5 |
| PFOA | 4 ppt | 9.1 | – | < 4 |
| 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 | – | – |
| NFDHA | 20 ppt | < 20 | – | < 20 |
| NMeFOSAA | 6 ppt | < 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 |
| PFMBA | 3 ppt | < 3 | – | < 3 |
| PFMPA | 4 ppt | < 4 | – | < 4 |
| PFNA | 4 ppt | < 4 | – | < 4 |
| PFOS | 4 ppt | < 4 | – | < 4 |
| PFPeA | 3 ppt | < 3 | – | < 3 |
| PFPeS | 4 ppt | < 4 | – | < 4 |
| PFTA | 8 ppt | < 8 | – | – |
| PFTrDA | 7 ppt | < 7 | – | – |
| PFUnA | 2 ppt | < 2 | – | < 2 |
| lithium | 9 µg/L | – | < 9 | – |
Well #25 TP (Military) facility 47661 · sample point 37154 · groundwater
| Compound | MRL | 2023-01-25 SE1 | 2023-07-17 SE2 | 2023-07-18 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 | – | – | < 9 |
Well #4 TP facility 47655 · sample point 37131 · groundwater
| Compound | MRL | 2023-01-25 SE1 | 2023-07-18 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 | – | < 9 |
Well #7 TP facility 47656 · sample point 37156 · groundwater
| Compound | MRL | 2023-01-25 SE1 | 2023-07-25 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 | – | < 9 |
Well #9 TP facility 47657 · sample point 37157 · groundwater
| Compound | MRL | 2023-01-25 SE1 | 2023-07-25 SE2 |
|---|---|---|---|
| PFHxS | 3 ppt | 4.8 | 4.6 |
| 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 |
| 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 |
Wells #26 & #27 TP facility 32073 · sample point 37160 · groundwater
| Compound | MRL | 2023-01-24 SE1 | 2023-07-18 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 | – | < 9 |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| PFHxS | 24 | 17% | 11.2 2023-01-24 | 1–3.5 | <MRL | <MRL | 4.6 | 4.8 |
| PFOA | 24 | 4% | 9.1 2023-01-24 | 0.38–4.21 | <MRL | <MRL | <MRL | <MRL |
Never detected (28): 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, 8:2 FTS, 9Cl-PF3ONS, ADONA, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFBA, PFBS, PFDA, PFDoA, PFEESA, PFHpA, PFHpS, PFHxA, PFMBA, PFMPA, PFNA, PFOS, PFPeA, PFPeS, PFTA, PFTrDA, PFUnA, lithium.
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 2023-01-08 to 2026-03-02; 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
- U.S. Geological Survey, 2014, 1:1,000,000-Scale Streams of the United States (streaml010g), National Map Small-Scale Collection; Strahler order 2+ on the 1:1M network (NHDPlus V2 does not cover Alaska). Coarser than the NHDPlus layer used for other states; mapped streams do not extend west of about 170.7 W (western Aleutians)
Data build f5ae0997fdb0 · 2026-10-18T04:03Z · UCMR 5 release Jul2026 · SDWIS 2026Q3. Data and methods.