No open health-based violations on EPA record in the last 10 years.
Serves about 1,875 people (372 connections) with groundwater from its own wells.
From EPA's record for PA5030004. PurityMap is independent of E Armstrong Cnty Muni Auth.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2018 | E. coli | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to January 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 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 | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| 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 | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| 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 | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| 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 | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| 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 | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| 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 | 2024-02-20 to 2024-08-20 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2024-08-20 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2024-08-20 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2024-08-20 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2024-08-20 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-20 to 2025-01-29 | UCMR5 Analytical Results: E ARMSTRONG CNTY MUNI AUTH (PA5030004) |
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 →E Armstrong Cnty Muni Auth's phone number on EPA record is 724-354-2540. Its mailing address is PO BOX 262, ELDERTON, PA 15736.
According to EPA's record, E Armstrong Cnty Muni Auth uses groundwater from its own wells.
EPA's record shows 1 health-based violation for E Armstrong Cnty Muni Auth in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 24 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in E Armstrong Cnty Muni Auth's latest lead and copper round, which ended in December 1996, was 5 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for E Armstrong Cnty Muni Auth. Its phone number on EPA record is 724-354-2540. Its mailing address on EPA record is PO BOX 262, ELDERTON, PA 15736. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.