No health-based violations on EPA record since 2016.
Serves about 9,307 people (3,347 connections) with groundwater from its own wells.
From EPA's record for MA2158000. PurityMap is independent of Littleton Water Department.
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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 June 2024 to December 2024.
| 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 | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| 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 | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| 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 | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| 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 | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| 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 | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| 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 | 2024-06-10 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| 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 | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-07-17 to 2024-12-04 | UCMR5 Analytical Results: LITTLETON WATER DEPARTMENT (MA2158000) |
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 →Littleton Water Department's phone number on EPA record is 9785402222. Its mailing address is PO BOX 2406, LITTLETON, MA 01460.
According to EPA's record, Littleton Water Department uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 2 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 Littleton Water Department's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Littleton Water Department. Its phone number on EPA record is 9785402222. Its mailing address on EPA record is PO BOX 2406, LITTLETON, MA 01460. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.