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COLONIAL SQUARE II

Connecticut — Non-Transient Non-Community — PWSID: CT1429063

System Information

PWSIDCT1429063
System NameCOLONIAL SQUARE II
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusInactive
Owner TypePrivate
EPA Region01
Serves SchoolNo
WholesalerNo
First ReportedAug 30, 1989
Last ReportedAug 17, 2021

Location & Contact

StateConnecticut
CityNEW CANNAN
ZIP Code06840
AddressBOX 1627
OrganizationSEEM, JOHN D.
Phone203-972-2174

Population & Service

Population Served55
Service Connections1

Drinking Water Violations (62)

This water system has 62 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 23, 2004 — Public Notice Other No No — — — Resolved Dec 7, 2005 Public Notice Rule and Revised PN Rule
Apr 1, 2004 Jun 30, 2004 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2004 Total Coliform Rule
Apr 1, 2004 Jun 30, 2004 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2004 Total Coliform Rule
Apr 1, 2004 Jun 30, 2004 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2004 Total Coliform Rule
Apr 1, 2004 Jun 30, 2004 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2004 Total Coliform Rule
Jan 1, 2002 Dec 31, 2004 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2004 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Sep 1, 1999 Sep 30, 1999 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1999 Total Coliform Rule
Sep 1, 1999 Sep 30, 1999 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1999 Total Coliform Rule
Sep 1, 1999 Sep 30, 1999 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1999 Total Coliform Rule
Jul 1, 1999 Sep 30, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 1999 Total Coliform Rule
Jul 1, 1999 Sep 30, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 1999 Total Coliform Rule

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.

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