- PWSID
- PA1460073
- State
- Pennsylvania
- System type
- community water system (CWS)
- Population served
- 822,600
- City
- Bryn Mawr
- Counties
- Chester County, Delaware County, Montgomery County
- Primary source water
- surface water
- UCMR 5 sampling
- 2024-02-01 to 2024-12-11 · 19 entry point(s) · water types: GW;SW
- Service-area boundary
- authoritative
PFOA ≥ 3 × its limit highest single result
PFOA 1–3 × its limit worst entry-point average
Open on the Pennsylvania map · All Pennsylvania 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
- Aqua Pa Uwchlan (PA1150035)
Seller's highest results: PFOA 9.3 ppt · PFOS 7.1 ppt · HI 0.003 · detected: PFBA;PFBS;PFHxA;PFOA;PFOS;PFPeA - Aqua Pa West Chester (PA1150098)
Seller's highest results: PFOA 5.9 ppt · PFOS <MRL · HI 0.002 · detected: PFBA;PFBS;PFHxA;PFOA;PFPeA - Aqua Pa Bensalem (PA1090078)
Seller's highest results: PFOA 8 ppt · PFOS 7.5 ppt · HI 0.522 · detected: PFBA;PFBS;PFHpA;PFHxA;PFHxS;PFOA;PFOS;PFPeA - Bcwsa Main Lower South (PA1090079)
Seller's highest results: PFOA 7.3 ppt · PFOS 6.9 ppt · HI 0.483 · detected: PFBA;PFBS;PFHpA;PFHxA;PFHxS;PFOA;PFOS;PFPeA - Chester Water Authority (PA1230004)
Seller's highest results: PFOA 5.1 ppt · PFOS <MRL · HI 0.002 · detected: PFBS;PFHxA;PFOA;PFPeA - Philadelphia Water Department (PA1510001)
Seller's highest results: PFOA 8.1 ppt · PFOS 6 ppt · HI 0.453 · detected: PFBA;PFBS;PFHpA;PFHxA;PFNA;PFOA;PFOS;PFPeA - Phoenixville Water Dept (PA1150077)
Seller's highest results: PFOA 5.9 ppt · PFOS 5.1 ppt · HI 0.005 · detected: PFBA;PFBS;PFHpA;PFHxA;PFOA;PFOS;PFPeA
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) | 12.6 | 11.8 | 4 |
| PFOS (ppt) | 9.2 | 8.9 | 4 |
| Hazard Index | 1.203 | 0.885 | 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).
Compared with Pennsylvania standards
| Highest single result | Worst entry-point average* | Pennsylvania | |
|---|---|---|---|
| PFOA (ppt) | 12.6 | 11.8 | 14 |
| PFOS (ppt) | 9.2 | 8.9 | 18 |
Sum standards add the listed compounds within each sample (non-detects = 0). State compliance is normally judged on averages over time; these are screening comparisons.
Sampling history
Sampled 2024-02-01 to 2024-12-11 · 19 entry point(s) · water types: GW;SW · 56 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2024-02-01 | Aidenn Lair Treatment (GW) | SE1 | 5.7 | <4 | 0.004 | PFBA 6.8, PFHpA 3.5, PFHxA 9.1, PFPeA 12.7 |
| 2024-02-01 | Babbs Treatment (GW) | SE1 | <4 | <4 | 0 | none |
| 2024-02-01 | Cabot Treatment (GW) | SE1 | 9.1 | <4 | 0 | PFHxA 3.9, PFPeA 4.1 |
| 2024-02-01 | Flourtown Treatment (GW) | SE1 | 4 | 4.1 | 0 | PFHxA 3, PFPeA 3.5 |
| 2024-02-01 | Hall Road Treatment (GW) | SE1 | 7.1 | 7 | 0.472 | PFHxA 4, PFPeA 4.2 |
| 2024-02-01 | Hillside Wells Treatment (GW) | SE1 | <4 | <4 | 0 | none |
| 2024-02-01 | Oreland Treatment (GW) | SE1 | 4.9 | 4.6 | 0.712 | PFHxA 4, PFPeA 3.8 |
| 2024-02-01 | Tredyffrin Treatment (GW) | SE1 | 4.4 | <4 | 0 | PFPeA 3.6 |
| 2024-02-02 | Neshaminy Pump (SW) | SE1 | 4.8 | 4.2 | 0.302 | PFBA 10, PFHxA 4.9, PFPeA 5.1 |
| 2024-02-05 | Media Clearwell Ridley (SW) | SE1 | 6.9 | <4 | 0.732 | PFHpA 3.4, PFHxA 7, PFPeA 7.2 |
| 2024-02-05 | Upper Merion TP (SW) | SE1 | <4 | <4 | 0 | none |
| 2024-02-06 | Crum Creek TP (SW) | SE1 | 6.4 | <4 | 0.002 | PFBA 6.7, PFHpA 3.3, PFHxA 6.3, PFPeA 6 |
| 2024-02-07 | Grand Oaks Treatment (GW) | SE1 | 7 | 4.7 | 0.342 | PFHpA 3.5, PFHxA 5.8, PFPeA 7.3 |
| 2024-02-07 | Highland Glen Treatment (GW) | SE1 | 11 | 6.6 | 0.313 | PFBA 5.5, PFHpA 4.3, PFHxA 6.3, PFPeA 6 |
| 2024-02-07 | Hunt Country Treatment (GW) | SE1 | n/a | n/a | n/a | none |
| 2024-02-07 | Pickering East TP (SW) | SE1 | n/a | n/a | n/a | none |
| 2024-02-07 | Pickering West TP (SW) | SE1 | <4 | <4 | 0.002 | PFHxA 3.3, PFPeA 3 |
| 2024-02-28 | Hollow Run Well Treatment (GW) | SE1 | 9.5 | 8.6 | 0.002 | PFBA 6, PFHpA 4.1, PFHxA 6.4, PFPeA 7 |
| 2024-03-06 | Pickering East TP (SW) | SE1 | <4 | <4 | 0.002 | PFHxA 3.6, PFPeA 3.1 |
| 2024-03-14 | Hunt Country Treatment (GW) | SE1 | 4.3 | <4 | 0 | PFHxA 3.6, PFPeA 3.7 |
| 2024-05-01 | Pickering East TP (SW) | SE2 | 4.5 | <4 | 0.002 | PFHxA 4.4, PFPeA 4.6 |
| 2024-05-01 | Pickering West TP (SW) | SE2 | <4 | <4 | 0.002 | PFHxA 4, PFPeA 4 |
| 2024-05-06 | Media Clearwell Ridley (SW) | SE2 | n/a | n/a | n/a | none |
| 2024-05-06 | Upper Merion TP (SW) | SE2 | n/a | n/a | n/a | none |
| 2024-05-07 | Crum Creek TP (SW) | SE2 | 6.4 | <4 | 0.002 | PFHpA 3.3, PFHxA 6.3, PFPeA 6.2 |
| 2024-05-30 | Neshaminy Pump (SW) | SE2 | 9.6 | 8.2 | 0.482 | PFBA 8.2, PFHpA 3.9, PFHxA 12, PFPeA 13.6 |
| 2024-08-07 | Neshaminy Pump (SW) | SE3 | 6 | 4.4 | 0.002 | PFBA 6.1, PFHxA 7.6, PFPeA 10.6 |
| 2024-08-12 | Aidenn Lair Treatment (GW) | SE2 | <4 | <4 | 0 | none |
| 2024-08-12 | Flourtown Treatment (GW) | SE2 | 4.2 | 4.2 | 0.301 | PFHxA 3.5, PFPeA 3.7 |
| 2024-08-12 | Hall Road Treatment (GW) | SE2 | 7.1 | 7.4 | 0.532 | PFHxA 4.2, PFPeA 4.6 |
| 2024-08-12 | North Hills TP (GW) | SE2 | <4 | <4 | 0 | PFBA 5.6, PFHxA 7.5, PFPeA 11.9, lithium 15.7 µg/L |
| 2024-08-12 | Oreland Treatment (GW) | SE2 | n/a | n/a | n/a | none |
| 2024-08-13 | Babbs Treatment (GW) | SE2 | <4 | <4 | 0 | none |
| 2024-08-13 | Cabot Treatment (GW) | SE2 | 9.4 | <4 | 0.742 | PFHxA 3.8, PFPeA 4 |
| 2024-08-13 | Crum Creek TP (SW) | SE3 | 5.2 | <4 | 0.002 | PFHxA 5.3, PFPeA 5.3 |
| 2024-08-13 | Media Clearwell Ridley (SW) | SE3 | 8.7 | 5.4 | 0.902 | PFBA 7.5, PFHpA 4.9, PFHxA 10.9, PFPeA 13.2 |
| 2024-08-14 | Pickering East TP (SW) | SE3 | 4.9 | <4 | 0.002 | PFHxA 5, PFPeA 5.6 |
| 2024-08-14 | Pickering West TP (SW) | SE3 | n/a | n/a | n/a | none |
| 2024-08-14 | Upper Merion TP (SW) | SE3 | 7.1 | <4 | 0.002 | PFBA 6.6, PFHxA 7.9, PFPeA 10.3 |
| 2024-08-19 | Tredyffrin Treatment (GW) | SE2 | 4.6 | <4 | 0 | PFHxA 3.1, PFPeA 3.6 |
| 2024-08-20 | Grand Oaks Treatment (GW) | SE2 | 9 | 6.3 | 0.922 | PFBA 6.1, PFHpA 4.6, PFHxA 8.1, PFPeA 10.2 |
| 2024-08-20 | Highland Glen Treatment (GW) | SE2 | 12.6 | 6.8 | 0.333 | PFBA 6.5, PFHpA 4.8, PFHxA 7.9, PFPeA 7.3 |
| 2024-08-20 | Hillside Wells Treatment (GW) | SE2 | <4 | <4 | 0 | none |
| 2024-08-20 | Hollow Run Well Treatment (GW) | SE2 | 10.5 | 9.2 | 0.002 | PFBA 6.9, PFHpA 4.6, PFHxA 7.5, PFPeA 7.7 |
| 2024-08-20 | Hunt Country Treatment (GW) | SE2 | 4.5 | <4 | 0 | PFHxA 4.2, PFPeA 4.1 |
| 2024-09-10 | Oreland Treatment (GW) | SE2 | 4.9 | 5 | 0.772 | PFHxA 4.4, PFPeA 4.4 |
| 2024-09-25 | Pickering West TP (SW) | SE3 | <4 | <4 | 0.002 | PFHxA 5.2, PFPeA 6.8 |
| 2024-11-05 | Crum Creek TP (SW) | SE4 | 5.8 | <4 | 0.002 | PFBA 6.4, PFHpA 3.1, PFHxA 6.9, PFPeA 7.4 |
| 2024-11-05 | Media Clearwell Ridley (SW) | SE4 | 9.3 | <4 | 1.203 | PFBA 10.1, PFHpA 6.9, PFHxA 17.2, PFPeA 21.8 |
| 2024-11-14 | Upper Merion TP (SW) | SE4 | 10.1 | <4 | 0.552 | PFBA 5.4, PFHpA 3.2, PFHxA 6.8, PFPeA 7.8 |
| 2024-11-19 | Pickering East TP (SW) | SE4 | 4.7 | <4 | 0.005 | PFBA 6.3, PFHxA 8.1, PFPeA 7.3 |
| 2024-11-20 | Neshaminy Pump (SW) | SE4 | <4 | <4 | 0.002 | PFBA 7.4, PFHxA 8.2, PFPeA 13 |
| 2024-12-03 | Media Clearwell Ridley (SW) | SE2 | 6.6 | <4 | 0.702 | PFBA 7.4, PFHpA 4.7, PFHxA 11.3, PFPeA 13.6 |
| 2024-12-03 | North Hills TP (GW) | SE1 | <4 | <4 | 0 | PFBA 5.6, PFHxA 10.8, PFPeA 10.9, lithium 15.3 µg/L |
| 2024-12-11 | Pickering West TP (SW) | SE4 | <4 | <4 | 0.002 | PFHxA 4.9, PFPeA 5.4 |
| 2024-12-11 | Upper Merion TP (SW) | SE2 | <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
1500 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.
Aidenn Lair Treatment facility 00111 · sample point 111 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-12 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | 6.8 | < 5 |
| PFBS | 3 ppt | 8.2 | < 3 |
| PFHpA | 3 ppt | 3.5 | < 3 |
| PFHxA | 3 ppt | 9.1 | < 3 |
| PFOA | 4 ppt | 5.7 | < 4 |
| PFPeA | 3 ppt | 12.7 | < 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 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 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 | < 9 | < 9 |
Babbs Treatment facility 00110 · sample point 110 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-13 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 | < 9 |
Cabot Treatment facility 00114 · sample point 114 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-13 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | < 3 | 3 |
| PFHxA | 3 ppt | 3.9 | 3.8 |
| PFNA | 4 ppt | < 4 | 7.4 |
| PFOA | 4 ppt | 9.1 | 9.4 |
| PFPeA | 3 ppt | 4.1 | 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 | < 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 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 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 | < 9 | < 9 |
Crum Creek TP facility 00115 · sample point 115 · surface water
| Compound | MRL | 2024-02-06 SE1 | 2024-05-07 SE2 | 2024-08-13 SE3 | 2024-11-05 SE4 |
|---|---|---|---|---|---|
| PFBA | 5 ppt | 6.7 | < 5 | < 5 | 6.4 |
| PFBS | 3 ppt | 4.1 | 3.9 | 3.5 | 4.5 |
| PFHpA | 3 ppt | 3.3 | 3.3 | < 3 | 3.1 |
| PFHxA | 3 ppt | 6.3 | 6.3 | 5.3 | 6.9 |
| PFOA | 4 ppt | 6.4 | 6.4 | 5.2 | 5.8 |
| PFPeA | 3 ppt | 6 | 6.2 | 5.3 | 7.4 |
| 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 |
| 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 | < 9 | < 9 |
Flourtown Treatment facility 00105 · sample point 105 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-12 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | < 3 | 3 |
| PFHxA | 3 ppt | 3 | 3.5 |
| PFHxS | 3 ppt | < 3 | 3 |
| PFOA | 4 ppt | 4 | 4.2 |
| PFOS | 4 ppt | 4.1 | 4.2 |
| PFPeA | 3 ppt | 3.5 | 3.7 |
| 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 |
| PFNA | 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 | < 9 | < 9 |
Grand Oaks Treatment facility 00123 · sample point 123 · groundwater
| Compound | MRL | 2024-02-07 SE1 | 2024-08-20 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | < 5 | 6.1 |
| PFBS | 3 ppt | 3.2 | 3.9 |
| PFHpA | 3 ppt | 3.5 | 4.6 |
| PFHxA | 3 ppt | 5.8 | 8.1 |
| PFHxS | 3 ppt | 3.4 | 4 |
| PFNA | 4 ppt | < 4 | 5.2 |
| PFOA | 4 ppt | 7 | 9 |
| PFOS | 4 ppt | 4.7 | 6.3 |
| PFPeA | 3 ppt | 7.3 | 10.2 |
| 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 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | < 9 | < 9 |
Hall Road Treatment facility 00107 · sample point 107 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-12 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | 3.9 | 4.5 |
| PFHxA | 3 ppt | 4 | 4.2 |
| PFHxS | 3 ppt | 4.7 | 5.3 |
| PFOA | 4 ppt | 7.1 | 7.1 |
| PFOS | 4 ppt | 7 | 7.4 |
| PFPeA | 3 ppt | 4.2 | 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 |
| 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 |
| PFNA | 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 | < 9 | < 9 |
Highland Glen Treatment facility 00125 · sample point 125 · groundwater
| Compound | MRL | 2024-02-07 SE1 | 2024-08-20 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | 5.5 | 6.5 |
| PFBS | 3 ppt | 6.1 | 6.1 |
| PFHpA | 3 ppt | 4.3 | 4.8 |
| PFHxA | 3 ppt | 6.3 | 7.9 |
| PFHxS | 3 ppt | 3.1 | 3.3 |
| PFOA | 4 ppt | 11 | 12.6 |
| PFOS | 4 ppt | 6.6 | 6.8 |
| PFPeA | 3 ppt | 6 | 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 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 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 | < 9 | < 9 |
Hillside Wells Treatment facility 00137 · sample point 137 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-20 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 | < 9 |
Hollow Run Well Treatment facility 00132 · sample point 132 · groundwater
| Compound | MRL | 2024-02-28 SE1 | 2024-08-20 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | 6 | 6.9 |
| PFBS | 3 ppt | 4.1 | 4.6 |
| PFHpA | 3 ppt | 4.1 | 4.6 |
| PFHxA | 3 ppt | 6.4 | 7.5 |
| PFOA | 4 ppt | 9.5 | 10.5 |
| PFOS | 4 ppt | 8.6 | 9.2 |
| PFPeA | 3 ppt | 7 | 7.7 |
| 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 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 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 | < 9 | < 9 |
Hunt Country Treatment facility 00126 · sample point 126 · groundwater
| Compound | MRL | 2024-02-07 SE1 | 2024-03-14 SE1 | 2024-08-20 SE2 |
|---|---|---|---|---|
| PFHxA | 3 ppt | – | 3.6 | 4.2 |
| PFOA | 4 ppt | – | 4.3 | 4.5 |
| PFPeA | 3 ppt | – | 3.7 | 4.1 |
| 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 |
| PFHxS | 3 ppt | – | < 3 | < 3 |
| PFMBA | 3 ppt | – | < 3 | < 3 |
| PFMPA | 4 ppt | – | < 4 | < 4 |
| PFNA | 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 | < 9 | – | < 9 |
Media Clearwell Ridley facility 00138 · sample point 138 · surface water
| Compound | MRL | 2024-02-05 SE1 | 2024-05-06 SE2 | 2024-08-13 SE3 | 2024-11-05 SE4 | 2024-12-03 SE2 |
|---|---|---|---|---|---|---|
| PFBA | 5 ppt | < 5 | – | 7.5 | 10.1 | 7.4 |
| PFBS | 3 ppt | 3.6 | – | 4.3 | 5.7 | 4.2 |
| PFHpA | 3 ppt | 3.4 | – | 4.9 | 6.9 | 4.7 |
| PFHxA | 3 ppt | 7 | – | 10.9 | 17.2 | 11.3 |
| PFNA | 4 ppt | 7.3 | – | 9 | 12 | 7 |
| PFOA | 4 ppt | 6.9 | – | 8.7 | 9.3 | 6.6 |
| PFOS | 4 ppt | < 4 | – | 5.4 | < 4 | < 4 |
| PFPeA | 3 ppt | 7.2 | – | 13.2 | 21.8 | 13.6 |
| 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 |
| 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 |
| 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 | – |
Neshaminy Pump facility 00136 · sample point 136 · surface water
| Compound | MRL | 2024-02-02 SE1 | 2024-05-30 SE2 | 2024-08-07 SE3 | 2024-11-20 SE4 |
|---|---|---|---|---|---|
| PFBA | 5 ppt | 10 | 8.2 | 6.1 | 7.4 |
| PFBS | 3 ppt | 4.3 | 5.1 | 4 | 3.5 |
| PFHpA | 3 ppt | < 3 | 3.9 | < 3 | < 3 |
| PFHxA | 3 ppt | 4.9 | 12 | 7.6 | 8.2 |
| PFHxS | 3 ppt | 3 | 4.8 | < 3 | < 3 |
| PFOA | 4 ppt | 4.8 | 9.6 | 6 | < 4 |
| PFOS | 4 ppt | 4.2 | 8.2 | 4.4 | < 4 |
| PFPeA | 3 ppt | 5.1 | 13.6 | 10.6 | 13 |
| 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 |
| 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 |
North Hills TP facility 00103 · sample point 103 · groundwater
| Compound | MRL | 2024-08-12 SE2 | 2024-12-03 SE1 |
|---|---|---|---|
| PFBA | 5 ppt | 5.6 | 5.6 |
| PFHxA | 3 ppt | 7.5 | 10.8 |
| PFPeA | 3 ppt | 11.9 | 10.9 |
| 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 |
| 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 |
| 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 | 15.7 | 15.3 |
Oreland Treatment facility 00106 · sample point 106 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-12 SE2 | 2024-09-10 SE2 |
|---|---|---|---|---|
| PFBS | 3 ppt | 3.4 | – | 4.2 |
| PFHxA | 3 ppt | 4 | – | 4.4 |
| PFHxS | 3 ppt | 7.1 | – | 7.7 |
| PFOA | 4 ppt | 4.9 | – | 4.9 |
| PFOS | 4 ppt | 4.6 | – | 5 |
| PFPeA | 3 ppt | 3.8 | – | 4.4 |
| 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 | < 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 |
| PFNA | 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 | < 9 | < 9 | – |
Pickering East TP facility 00117 · sample point 117 · surface water
| Compound | MRL | 2024-02-07 SE1 | 2024-03-06 SE1 | 2024-05-01 SE2 | 2024-08-14 SE3 | 2024-11-19 SE4 |
|---|---|---|---|---|---|---|
| PFBA | 5 ppt | – | < 5 | < 5 | < 5 | 6.3 |
| PFBS | 3 ppt | – | 3.6 | 3.8 | 4.8 | 9.5 |
| PFHxA | 3 ppt | – | 3.6 | 4.4 | 5 | 8.1 |
| PFOA | 4 ppt | – | < 4 | 4.5 | 4.9 | 4.7 |
| PFPeA | 3 ppt | – | 3.1 | 4.6 | 5.6 | 7.3 |
| 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 |
| 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 | < 9 | < 9 |
Pickering West TP facility 00116 · sample point 116 · surface water
| Compound | MRL | 2024-02-07 SE1 | 2024-05-01 SE2 | 2024-08-14 SE3 | 2024-09-25 SE3 | 2024-12-11 SE4 |
|---|---|---|---|---|---|---|
| PFBS | 3 ppt | 3.4 | 3.4 | – | 4.2 | 3.5 |
| PFHxA | 3 ppt | 3.3 | 4 | – | 5.2 | 4.9 |
| PFPeA | 3 ppt | 3 | 4 | – | 6.8 | 5.4 |
| 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 |
| PFBA | 5 ppt | < 5 | < 5 | – | < 5 | < 5 |
| 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 |
| 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 |
Tredyffrin Treatment facility 00135 · sample point 135 · groundwater
| Compound | MRL | 2024-02-01 SE1 | 2024-08-19 SE2 |
|---|---|---|---|
| PFHxA | 3 ppt | < 3 | 3.1 |
| PFOA | 4 ppt | 4.4 | 4.6 |
| PFPeA | 3 ppt | 3.6 | 3.6 |
| 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 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 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 | < 9 | < 9 |
Upper Merion TP facility 00112 · sample point 112 · surface water
| Compound | MRL | 2024-02-05 SE1 | 2024-05-06 SE2 | 2024-08-14 SE3 | 2024-11-14 SE4 | 2024-12-11 SE2 |
|---|---|---|---|---|---|---|
| PFBA | 5 ppt | < 5 | – | 6.6 | 5.4 | < 5 |
| PFBS | 3 ppt | < 3 | – | 4.4 | 3.9 | < 3 |
| PFHpA | 3 ppt | < 3 | – | < 3 | 3.2 | < 3 |
| PFHxA | 3 ppt | < 3 | – | 7.9 | 6.8 | < 3 |
| PFNA | 4 ppt | < 4 | – | < 4 | 5.5 | < 4 |
| PFOA | 4 ppt | < 4 | – | 7.1 | 10.1 | < 4 |
| PFPeA | 3 ppt | < 3 | – | 10.3 | 7.8 | < 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 |
| 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 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| PFPeA | 50 | 86% | 21.8 2024-11-05 | 6.18–6.6 | 5.3 | 7.7 | 12.7 | 13.6 |
| PFHxA | 50 | 84% | 17.2 2024-11-05 | 5.36–5.84 | 4.9 | 7.5 | 9.1 | 11.3 |
| PFBS | 50 | 70% | 9.5 2024-11-19 | 3.07–3.97 | 3.6 | 4.3 | 5.1 | 6.1 |
| PFOA | 50 | 70% | 12.6 2024-08-20 | 4.82–6.02 | 4.9 | 7.1 | 9.5 | 10.5 |
| PFBA | 50 | 40% | 10.1 2024-11-05 | 2.74–5.74 | <MRL | 6.3 | 7.4 | 8.2 |
| PFHpA | 50 | 32% | 6.9 2024-11-05 | 1.32–3.36 | <MRL | 3.3 | 4.6 | 4.8 |
| PFOS | 50 | 32% | 9.2 2024-08-20 | 1.93–4.65 | <MRL | 4.4 | 6.8 | 8.2 |
| PFHxS | 50 | 22% | 7.7 2024-09-10 | 0.99–3.33 | <MRL | <MRL | 4 | 5.3 |
| PFNA | 50 | 14% | 12 2024-11-05 | 1.07–4.51 | <MRL | <MRL | 5.5 | 7.4 |
| lithium | 50 | 4% | 15.7 2024-08-12 | 0.62–9.26 | <MRL | <MRL | <MRL | <MRL |
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, 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 2023-01-10 to 2026-04-09; 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 52bd2907cbc3 · 2026-10-18T04:10Z · UCMR 5 release Jul2026 · SDWIS 2026Q3. Data and methods.