No health-based violations on EPA record since 2016.
Serves about 16,000 people (1,250 connections) with surface water from its own intake.
From EPA's record for NH0691010. PurityMap is independent of Unh/Durham Water Sys.
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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 February 2023 to December 2023.
| 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 | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| 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 | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| 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 | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| 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 | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| 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 | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| 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 | 2023-02-14 to 2023-11-20 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-11-20 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-11-20 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| 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 | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-11-20 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-11-20 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-14 to 2023-12-06 | UCMR5 Analytical Results: UNH/DURHAM WATER SYS (NH0691010) |
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 →According to EPA's record, Unh/Durham Water Sys uses surface water from its own intake.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Unh/Durham Water Sys's latest lead and copper round, which ended in December 2024. The federal action level is 15 µg/L.
PurityMap has no verified website for Unh/Durham Water Sys. Its mailing address on EPA record is PUBLIC WORKS DEPT, 100 STONE QUARRY DR, DURHAM, NH 03824. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.