GREAT HOLLOW LAKE
Connecticut - Transient Non-Community - PWSID: CT0859134
System Information
| PWSID | CT0859134 |
| System Name | GREAT HOLLOW LAKE |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jul 2, 2018 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Connecticut |
| City | MONROE |
| ZIP Code | 06468 |
| Address | 7 FAN HILL RD |
| Organization | ROONEY, TERRENCE |
| Phone | 203-452-2821 |
Population & Service
| Population Served | 35 |
| Service Connections | 4 |
Drinking Water Violations (35)
This water system has 35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | Oct 31, 2025 | MON | No | Yes | - | - | - | Archived | Oct 31, 2025 | - | |
| Oct 1, 2025 | Oct 31, 2025 | MR | No | Yes | - | - | - | Archived | Oct 31, 2025 | - | |
| Apr 1, 2024 | Apr 30, 2024 | MR | No | Yes | - | - | - | Resolved | Apr 30, 2024 | - | |
| Apr 1, 2024 | Apr 30, 2024 | MR | No | Yes | - | - | - | Resolved | Apr 30, 2024 | - | |
| Apr 1, 2024 | Apr 30, 2024 | MR | No | Yes | - | - | - | Resolved | Apr 30, 2024 | - | |
| Apr 1, 2024 | Apr 30, 2024 | MR | No | Yes | - | - | - | Resolved | Apr 30, 2024 | - | |
| Jul 13, 2023 | - | Other | No | No | - | - | - | Resolved | Aug 21, 2023 | - | |
| Jul 13, 2023 | - | Other | No | No | - | - | - | Resolved | Aug 21, 2023 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Sep 13, 2022 | - | Other | No | No | - | - | - | Resolved | Jun 22, 2023 | - | |
| Sep 13, 2022 | - | Other | No | No | - | - | - | Resolved | Jun 22, 2023 | - | |
| Sep 13, 2022 | - | TT | Yes | No | - | - | - | Resolved | Aug 1, 2023 | - | |
| Sep 13, 2022 | - | TT | Yes | No | - | - | - | Resolved | Aug 1, 2023 | - | |
| Sep 13, 2022 | - | TT | Yes | No | - | - | - | Resolved | Aug 1, 2023 | - | |
| Sep 13, 2022 | - | TT | Yes | No | - | - | - | Resolved | Aug 1, 2023 | - | |
| Apr 1, 2022 | Apr 30, 2022 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2022 | - | |
| Apr 1, 2022 | Apr 30, 2022 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2022 | - | |
| Apr 1, 2022 | Apr 30, 2022 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2022 | - | |
| Apr 1, 2022 | Apr 30, 2022 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2022 | - | |
| Sep 1, 2021 | Sep 30, 2021 | MCL | Yes | No | - | - | - | Resolved | Sep 29, 2021 | - | |
| Sep 1, 2021 | Sep 30, 2021 | MCL | Yes | No | - | - | - | Resolved | Sep 29, 2021 | - | |
| Sep 1, 2021 | Sep 30, 2021 | MCL | Yes | No | - | - | - | Resolved | Sep 29, 2021 | - | |
| Sep 1, 2021 | Sep 30, 2021 | MCL | Yes | No | - | - | - | Resolved | Sep 29, 2021 | - | |
| Aug 7, 2021 | - | TT | Yes | No | - | - | - | Resolved | Sep 28, 2021 | - | |
| Aug 7, 2021 | - | TT | Yes | No | - | - | - | Resolved | Sep 28, 2021 | - | |
| Aug 7, 2021 | - | TT | Yes | No | - | - | - | Resolved | Sep 28, 2021 | - | |
| Aug 8, 2020 | - | TT | Yes | No | - | - | - | Resolved | Feb 25, 2020 | - | |
| Aug 8, 2020 | - | TT | Yes | No | - | - | - | Resolved | Feb 25, 2020 | - | |
| Aug 8, 2020 | - | TT | Yes | No | - | - | - | Resolved | Feb 25, 2020 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.