KNOLLCREST TAX DISTRICT
Connecticut - Community Water System - PWSID: CT0910081
System Information
| PWSID | CT0910081 |
| System Name | KNOLLCREST TAX DISTRICT |
| 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 | NEW FAIRFIELD |
| ZIP Code | 06812 |
| Address | P.O. BOX 8053 |
| Organization | CRONK, MARK S. |
| Phone | 203-746-1356 |
Population & Service
| Population Served | 356 |
| Service Connections | 89 |
Drinking Water Violations (165)
This water system has 165 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 1, 2025 | - | Other | No | No | - | - | - | Resolved | Sep 8, 2025 | - | |
| May 3, 2025 | - | Other | No | No | - | - | - | Resolved | Jul 22, 2025 | - | |
| May 3, 2025 | - | Other | No | No | - | - | - | Resolved | Jul 22, 2025 | - | |
| May 3, 2025 | - | Other | No | No | - | - | - | Resolved | Jul 22, 2025 | - | |
| May 3, 2025 | - | Other | No | No | - | - | - | Resolved | Jul 22, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Aug 10, 2024 | - | Other | No | No | - | - | - | Resolved | Sep 15, 2024 | - | |
| Aug 10, 2024 | - | Other | No | No | - | - | - | Resolved | Sep 15, 2024 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Sep 15, 2024 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Sep 15, 2024 | - | |
| Dec 30, 2023 | - | MR | No | No | - | TT | - | Resolved | Jul 26, 2023 | - | |
| Dec 30, 2023 | - | MR | No | No | - | TT | - | Resolved | Jul 26, 2023 | - | |
| Dec 1, 2023 | Dec 31, 2023 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2023 | - | |
| Dec 1, 2023 | Dec 31, 2023 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2023 | - | |
| Dec 1, 2023 | Dec 31, 2023 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2023 | - | |
| Dec 1, 2023 | Dec 31, 2023 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2023 | - | |
| Oct 30, 2023 | - | TT | Yes | No | - | - | - | Resolved | Oct 30, 2023 | - | |
| Oct 30, 2023 | - | TT | Yes | No | - | - | - | Resolved | Oct 30, 2023 | - | |
| Oct 30, 2023 | - | TT | Yes | No | - | - | - | Resolved | Oct 30, 2023 | - | |
| Oct 30, 2023 | - | TT | Yes | No | - | - | - | Resolved | Oct 30, 2023 | - | |
| Oct 2, 2023 | - | Other | No | No | - | - | - | Resolved | Dec 5, 2023 | - | |
| Oct 2, 2023 | - | Other | No | No | - | - | - | Resolved | Dec 5, 2023 | - | |
| Jul 1, 2023 | Jul 31, 2023 | MCL | Yes | No | - | - | - | Resolved | Jul 31, 2023 | - | |
| Jul 1, 2023 | Jul 31, 2023 | MCL | Yes | No | - | - | - | Resolved | Jul 31, 2023 | - | |
| Jul 1, 2023 | Jul 31, 2023 | MCL | Yes | No | - | - | - | Resolved | Jul 31, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jun 28, 2023 | - | |
| Jul 1, 2023 | Jul 31, 2023 | MCL | Yes | No | - | - | - | Resolved | Jul 31, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jun 28, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2023 | - | |
| Dec 30, 2019 | - | MR | No | No | - | TT | - | Resolved | Feb 7, 2020 | - | |
| Dec 30, 2019 | - | MR | No | No | - | TT | - | Resolved | Feb 7, 2020 | - | |
| Mar 17, 2018 | - | Other | No | No | - | - | - | Resolved | Apr 23, 2018 | - | |
| Mar 17, 2018 | - | Other | No | No | - | - | - | Resolved | Apr 23, 2018 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 14, 2017 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 14, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | - | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | - | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.00005 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 30 ug/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 0.0004 mg/L | - | Resolved | Jun 30, 2017 | - |
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.