AQUARION-GREENWICH
Connecticut — Community Water System — PWSID: CT0570011
System Information
| PWSID | CT0570011 |
| System Name | AQUARION-GREENWICH |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 8, 1979 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Connecticut |
| City | SHELTON |
| ZIP Code | 06484 |
| Address | 505 Huntington St. |
| Organization | ULRICH, ROBERT J. |
| Phone | 203-926-4320 |
Population & Service
| Population Served | 53,297 |
| Service Connections | 17,060 |
Drinking Water Violations (114)
This water system has 114 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 1.0 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Dec 30, 2019 | — | MR | No | No | — | TT | — | Resolved | Jan 16, 2020 | — | |
| Nov 1, 2018 | Nov 30, 2018 | MR | No | Yes | — | TT | — | Resolved | Nov 30, 2018 | — | |
| Nov 1, 2018 | Nov 30, 2018 | MR | No | Yes | — | TT | — | Resolved | Nov 30, 2018 | — | |
| Nov 1, 2018 | Nov 30, 2018 | MR | No | Yes | — | TT | — | Resolved | Nov 30, 2018 | — | |
| Nov 1, 2018 | Nov 30, 2018 | MR | No | Yes | — | TT | — | Resolved | Nov 30, 2018 | — | |
| Jul 1, 2018 | — | Other | No | No | — | — | — | Resolved | Jul 9, 2018 | — | |
| Jul 1, 2018 | — | Other | No | No | — | — | — | Resolved | Jul 9, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2018 | — |
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.