CHAPCO, INC.

Connecticut — Non-Transient Non-Community — PWSID: CT0260104

System Information

PWSID	CT0260104
System Name	CHAPCO, INC.
System Type	Non-Transient Non-Community
Water Source	Ground Water
Activity Status	Non-Inventory
Owner Type	Private
EPA Region	01
Serves School	No
Wholesaler	No
First Reported	Jan 11, 2000
Last Reported	Dec 15, 2025

Location & Contact

State	Connecticut
City	CHESTER
ZIP Code	06412
Address	10 DENLAR DRIVE
Organization	WEINSTEIN, ROBERT
Phone	860-526-9535

Population & Service

Population Served	40
Service Connections	1

Drinking Water Violations (414)

This water system has 414 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
Aug 2, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Aug 23, 2012	Public Notice Rule and Revised PN Rule
Aug 2, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Aug 23, 2012	Public Notice Rule and Revised PN Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2012	Total Coliform Rule
Apr 1, 2012	Jun 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2012	Total Coliform Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Jun 30, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.027 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.027 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.027 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.027 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.027 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 12, 2012	Lead and Copper Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.03 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.03 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 12, 2012	Lead and Copper Rule
Oct 1, 2011	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 12, 2012	Lead and Copper Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 12, 2012	Lead and Copper Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MCL	Yes	No	.03 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MCL	Yes	No	.03 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Sep 30, 2011	Arsenic Rule
Apr 1, 2011	Jun 30, 2011	Arsenic	MCL	Yes	No	.031 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2011	Arsenic Rule
Apr 1, 2011	Jun 30, 2011	Arsenic	MCL	Yes	No	.031 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2011	Arsenic Rule
Apr 1, 2011	Jun 30, 2011	Arsenic	MCL	Yes	No	.031 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2011	Arsenic Rule
Apr 1, 2011	Jun 30, 2011	Arsenic	MCL	Yes	No	.031 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2011	Arsenic Rule
Apr 1, 2011	Jun 30, 2011	Arsenic	MCL	Yes	No	.031 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2011	Arsenic Rule
Apr 1, 2011	Jun 30, 2011	Arsenic	MCL	Yes	No	.031 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2011	Arsenic Rule
Jan 1, 2011	Mar 31, 2011	Arsenic	MCL	Yes	No	.032 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2011	Arsenic Rule
Jan 1, 2011	Mar 31, 2011	Arsenic	MCL	Yes	No	.032 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2011	Arsenic Rule
Jan 1, 2011	Mar 31, 2011	Arsenic	MCL	Yes	No	.032 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2011	Arsenic Rule
Jan 1, 2011	Mar 31, 2011	Arsenic	MCL	Yes	No	.032 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2011	Arsenic Rule
Jan 1, 2011	Mar 31, 2011	Arsenic	MCL	Yes	No	.032 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2011	Arsenic 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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