No open health-based violations on EPA record in the last 10 years.
Serves about 3,800 people (1,570 connections) with surface water from its own intake.
From EPA's record for MA1074001. PurityMap is independent of South Deerfield Water Supply District.
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2 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From August 2018 | Interim Enhanced Surface Water Treatment Rule | – | – | Resolved |
| From July 2018 | Interim Enhanced Surface Water Treatment Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 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 | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| 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 | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| 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 | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| 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 | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| 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 | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| 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 | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| 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 | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-12-05 | UCMR5 Analytical Results: SOUTH DEERFIELD WATER SUPPLY DISTRICT (MA1074001) |
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 →South Deerfield Water Supply District's phone number on EPA record is 4136653540. Its mailing address is P.O. BOX 51, SOUTH DEERFIELD, MA 01373.
According to EPA's record, South Deerfield Water Supply District uses surface water from its own intake.
EPA's record shows 2 health-based violations for South Deerfield Water Supply District 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 South Deerfield Water Supply District's latest lead and copper round, which ended in September 2025, was 4.3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for South Deerfield Water Supply District. Its phone number on EPA record is 4136653540. Its mailing address on EPA record is P.O. BOX 51, SOUTH DEERFIELD, MA 01373. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.