No health-based violations on EPA record since 2016.
Serves about 48,600 people (13,412 connections) with surface water from its own intake, and buys water from Aqua Pa Main System and Chester Water Authority.
From EPA's record for PA1150098. PurityMap is independent of Aqua Pa West Chester.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 5.9 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorobutanesulfonic acid (PFBS) | 3.6 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorohexanoic acid (PFHxA) | 7.2 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorobutanoic acid (PFBA) | 5.7 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoropentanoic acid (PFPeA) | 7.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-25 to 2024-10-10 | UCMR5 Analytical Results: AQUA PA WEST CHESTER (PA1150098) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Aqua Pa West Chester's phone number on EPA record is 610-645-1122. Its mailing address is 762 W LANCASTER AVE, BRYN MAWR, PA 19010.
According to EPA's record, Aqua Pa West Chester uses surface water from its own intake, and buys water from Aqua Pa Main System and Chester Water Authority.
No health-based violations on EPA record since 2016. EPA also lists 37 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Aqua Pa West Chester's latest lead and copper round, which ended in September 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Aqua Pa West Chester. Its phone number on EPA record is 610-645-1122. Its mailing address on EPA record is 762 W LANCASTER AVE, BRYN MAWR, PA 19010. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.