No open health-based violations on EPA record in the last 10 years.
Serves about 18,231 people (6,622 connections) with groundwater from its own wells, and buys water from New Britain Water Department and CTWC.
From EPA's record for CT1100011. PurityMap is independent of Aquarion-Plainville Regional.
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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 2026 | Groundwater Rule | – | – | Archived |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2023 to August 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 6.8 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorooctanoic acid (PFOA) | 5.2 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Lithium | 11.8 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorobutanoic acid (PFBA) | 6.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| 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 | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| 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 | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| 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 | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| 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 | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| 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 | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| 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 | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-13 to 2023-08-08 | UCMR5 Analytical Results: AQUARION-PLAINVILLE REGIONAL (CT1100011) |
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 →Aquarion-Plainville Regional's phone number on EPA record is 203-926-4320. Its mailing address is 505 Huntington St., SHELTON, CT 06484.
According to EPA's record, Aquarion-Plainville Regional uses groundwater from its own wells, and buys water from New Britain Water Department and CTWC.
EPA's record shows 1 health-based violation for Aquarion-Plainville Regional in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 7 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 Aquarion-Plainville Regional'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 Aquarion-Plainville Regional. Its phone number on EPA record is 203-926-4320. Its mailing address on EPA record is 505 Huntington St., SHELTON, CT 06484. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.