No health-based violations on EPA record since 2016.
Serves about 5,030 people (2,620 connections) with surface water from its own intake.
From EPA's record for CT0261031. PurityMap is independent of CTWC.
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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 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 | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| 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 | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| 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 | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| 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 | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| 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 | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| 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 | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| 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 | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2023-12-11 | UCMR5 Analytical Results: CTWC - SHORELINE REGION-CHESTER SYSTEM (CT0261031) |
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 →CTWC's phone number on EPA record is 860-664-6125. Its mailing address is 93 West Main Street, CLINTON, CT 06413.
According to EPA's record, CTWC 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.
Lead was not detected at the 90th percentile of tap samples in CTWC's latest lead and copper round, which ended in December 2026. The federal action level is 15 µg/L.
PurityMap has no verified website for CTWC. Its phone number on EPA record is 860-664-6125. Its mailing address on EPA record is 93 West Main Street, CLINTON, CT 06413. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.