STERLING WATER SYSTEM
Connecticut — Community Water System — PWSID: CT1360011
System Information
| PWSID | CT1360011 |
| System Name | STERLING WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 8, 1979 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Connecticut |
| City | ONECO |
| ZIP Code | 06373 |
| Address | 1183 Plainfield Pike |
| Organization | COOPER, LINCOLN |
| Phone | 860-564-2904 |
Population & Service
| Population Served | 308 |
| Service Connections | 90 |
Drinking Water Violations (99)
This water system has 99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Sep 1, 2018 | Aug 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2019 | — | |
| Jul 1, 2016 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 4 mrem/yr | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Jun 30, 2011 | — | |
| Apr 1, 2011 | Jun 30, 2011 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Jun 30, 2011 | — |
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.