No health-based violations on EPA record since 2016.
Serves about 6,500 people (1,900 connections) with surface water from its own intake.
From EPA's record for NH1381010. PurityMap is independent of Littleton Water and Light.
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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 March 2025 to September 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 | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| 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 | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| 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 | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| 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 | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| 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 | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| 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 | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| 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 | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-09-16 | UCMR5 Analytical Results: LITTLETON WATER AND LIGHT (NH1381010) |
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, Littleton Water and Light uses surface water from its own intake.
No health-based violations on EPA record since 2016. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Littleton Water and Light's latest lead and copper round, which ended in December 2022, was 8 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Littleton Water and Light. Its mailing address on EPA record is 65 LAFAYETTE AVE, LITTLETON, NH 03561. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.