NIANTIC KOA
Connecticut — Transient Non-Community — PWSID: CT0450024
System Information
| PWSID | CT0450024 |
| System Name | NIANTIC KOA |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Non-Inventory |
| Owner Type | Private |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 11, 2000 |
| Last Reported | Dec 15, 2025 |
Location & Contact
| State | Connecticut |
| City | NIANTIC |
| ZIP Code | 06357 |
| Address | 271 West Main Street |
| Organization | KELSEY, JOHN |
| Phone | 860-739-9308 |
Population & Service
| Population Served | 100 |
| Service Connections | 1 |
Drinking Water Violations (56)
This water system has 56 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 23, 2017 | — | Public Notice | Other | No | No | — | — | — | Resolved | Apr 9, 2018 | Public Notice Rule and Revised PN Rule |
| Jul 23, 2017 | — | Public Notice | Other | No | No | — | — | — | Resolved | Apr 9, 2018 | Public Notice Rule and Revised PN Rule |
| Apr 2, 2017 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Apr 9, 2018 | Revised Total Coliform Rule |
| Apr 2, 2017 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Apr 9, 2018 | Revised Total Coliform Rule |
| Apr 2, 2017 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Apr 9, 2018 | Revised Total Coliform Rule |
| Nov 2, 2012 | — | Public Notice | Other | No | No | — | — | — | Resolved | Apr 9, 2018 | Public Notice Rule and Revised PN Rule |
| Nov 2, 2012 | — | Public Notice | Other | No | No | — | — | — | Resolved | Apr 9, 2018 | Public Notice Rule and Revised PN Rule |
| Jul 1, 2012 | Sep 30, 2012 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | Total Coliform Rule |
| Jul 1, 2012 | Sep 30, 2012 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | Total Coliform Rule |
| Jul 1, 2012 | Sep 30, 2012 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | Total Coliform Rule |
| Jul 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2000 | Total Coliform Rule |
| Jul 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2000 | Total Coliform Rule |
| Jul 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2000 | Total Coliform Rule |
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About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.