HADDAM-KILLINGWORTH HIGH SCHOOL
Connecticut — Non-Transient Non-Community — PWSID: CT0610563
System Information
| PWSID | CT0610563 |
| System Name | HADDAM-KILLINGWORTH HIGH SCHOOL |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Nov 22, 1993 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Connecticut |
| City | KILLINGWORTH |
| ZIP Code | 06419 |
| Address | 340 Route 81 |
| Organization | CONVERSE, JOHN |
| Phone | 860-354-4534 |
Population & Service
| Population Served | 642 |
| Service Connections | 1 |
Drinking Water Violations (85)
This water system has 85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 16, 2018 | — | TT | Yes | No | — | — | — | Resolved | Nov 21, 2018 | — | |
| Nov 16, 2018 | — | TT | Yes | No | — | — | — | Resolved | Nov 21, 2018 | — | |
| Nov 16, 2018 | — | TT | Yes | No | — | — | — | Resolved | Nov 21, 2018 | — | |
| Nov 16, 2018 | — | TT | Yes | No | — | — | — | Resolved | Nov 21, 2018 | — | |
| Aug 12, 2018 | — | RPT | No | No | — | — | — | Resolved | Aug 22, 2018 | — | |
| Aug 12, 2018 | — | RPT | No | No | — | — | — | Resolved | Aug 22, 2018 | — | |
| Aug 12, 2018 | — | RPT | No | No | — | — | — | Resolved | Aug 22, 2018 | — | |
| Aug 12, 2018 | — | RPT | No | No | — | — | — | Resolved | Aug 22, 2018 | — | |
| Mar 1, 2017 | Mar 31, 2017 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2017 | — | |
| Mar 1, 2017 | Mar 31, 2017 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2017 | — | |
| Mar 1, 2017 | Mar 31, 2017 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2017 | — | |
| Mar 1, 2017 | Mar 31, 2017 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2017 | — | |
| Feb 1, 2017 | Feb 28, 2017 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2017 | — | |
| Feb 1, 2017 | Feb 28, 2017 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2017 | — | |
| Feb 1, 2017 | Feb 28, 2017 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2017 | — | |
| Feb 1, 2017 | Feb 28, 2017 | MON | No | Yes | — | — | — | Resolved | Feb 28, 2017 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Nov 8, 2016 | — | MR | No | Yes | — | — | — | Resolved | Nov 25, 2020 | — | |
| Dec 30, 2014 | — | MR | No | No | — | TT | — | Resolved | May 8, 2017 | — | |
| Dec 30, 2014 | — | MR | No | No | — | TT | — | Resolved | May 8, 2017 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2011 | Sep 30, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2011 | — | |
| Jan 1, 2006 | — | MR | No | No | — | TT | — | Resolved | Mar 18, 2009 | — | |
| Jan 1, 2006 | — | MR | No | No | — | TT | — | Resolved | Mar 18, 2009 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.4 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.003 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | — | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | — | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.006 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.5 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.007 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.04 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.00005 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.003 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.0002 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.0005 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.05 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.0002 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.05 mg/L | — | Archived | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Dec 31, 2007 | — |
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.