No open health-based violations on EPA record in the last 10 years.
Serves about 6,715 people (2,487 connections) with groundwater from its own wells.
From EPA's record for MA2282000. PurityMap is independent of Sterling Water Department.
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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 February 2024 | Lead and Copper Rule | – | TT | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to August 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 5.2 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 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 | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 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 | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 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 | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 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 | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 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 | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 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 | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| 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 | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-08-14 | UCMR5 Analytical Results: STERLING WATER DEPARTMENT (MA2282000) |
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 →Sterling Water Department's phone number on EPA record is 9784226767. Its mailing address is P.O. BOX 537, STERLING, MA 01564.
According to EPA's record, Sterling Water Department uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Sterling Water Department in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Sterling Water Department's latest lead and copper round, which ended in December 2025, was 4 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Sterling Water Department. Its phone number on EPA record is 9784226767. Its mailing address on EPA record is P.O. BOX 537, STERLING, MA 01564. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.