LOCKPORT TOWNSHIP

Michigan — Community Water System — PWSID: MI0003943

System Information

PWSID	MI0003943
System Name	LOCKPORT TOWNSHIP
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	05
Serves School	No
Wholesaler	No
First Reported	Feb 3, 1981
Last Reported	Dec 18, 2025

Location & Contact

State	Michigan
City	CENTREVILLE
ZIP Code	49032
Address	20593 MAJOR RD
Organization	MAJOR, MARK
Phone	269-816-0904

Population & Service

Population Served	1,778
Service Connections	700

Drinking Water Violations (48)

This water system has 48 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
Sep 1, 2020	Sep 30, 2020	Revised Total Coliform Rule	MON	No	No	—	—	—	Resolved	Sep 30, 2020	Revised Total Coliform Rule
Sep 1, 2020	Sep 30, 2020	Revised Total Coliform Rule	MON	No	No	—	—	—	Resolved	Sep 30, 2020	Revised Total Coliform Rule
Sep 1, 2020	Sep 30, 2020	Revised Total Coliform Rule	MON	No	No	—	—	—	Resolved	Sep 30, 2020	Revised Total Coliform Rule
Dec 1, 2013	Dec 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 9, 2013	Total Coliform Rule
Dec 1, 2013	Dec 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 9, 2013	Total Coliform Rule
Dec 1, 2013	Dec 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 9, 2013	Total Coliform Rule
Dec 1, 2013	Dec 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 9, 2013	Total Coliform Rule
Dec 1, 2013	Dec 31, 2013	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 9, 2013	Total Coliform Rule
Nov 1, 2012	Nov 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2012	Total Coliform Rule
Nov 1, 2012	Nov 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2012	Total Coliform Rule
May 1, 2012	May 31, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2012	Total Coliform Rule
May 1, 2012	May 31, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2012	Total Coliform Rule
Apr 1, 2012	Apr 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Apr 30, 2012	Total Coliform Rule
Apr 1, 2012	Apr 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Apr 30, 2012	Total Coliform Rule
Apr 1, 2012	Apr 30, 2012	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Apr 30, 2012	Total Coliform Rule
Sep 1, 2011	Sep 30, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2011	Total Coliform Rule
Sep 1, 2011	Sep 30, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2011	Total Coliform Rule
Sep 1, 2011	Sep 30, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2011	Total Coliform Rule
Dec 1, 2010	Dec 31, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2010	Total Coliform Rule
Dec 1, 2010	Dec 31, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2010	Total Coliform Rule
Dec 1, 2010	Dec 31, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2010	Total Coliform Rule
Dec 1, 2010	Dec 31, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2010	Total Coliform Rule
Dec 1, 2010	Dec 31, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2010	Total Coliform Rule
Dec 1, 2010	Dec 31, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2010	Total Coliform Rule
Nov 1, 2010	Nov 30, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 2010	Total Coliform Rule
Nov 1, 2010	Nov 30, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 2010	Total Coliform Rule
Nov 1, 2010	Nov 30, 2010	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Nov 30, 2010	Total Coliform Rule
Nov 1, 2008	Nov 30, 2008	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2008	Total Coliform Rule
Nov 1, 2008	Nov 30, 2008	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2008	Total Coliform Rule
Nov 1, 2008	Nov 30, 2008	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2008	Total Coliform Rule
Nov 1, 2008	Nov 30, 2008	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2008	Total Coliform Rule
Dec 1, 2007	Dec 31, 2007	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2007	Total Coliform Rule
Dec 1, 2007	Dec 31, 2007	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2007	Total Coliform Rule
Dec 1, 2007	Dec 31, 2007	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2007	Total Coliform Rule
Jun 1, 2004	Jun 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2004	Total Coliform Rule
Jun 1, 2004	Jun 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2004	Total Coliform Rule
Jun 1, 2004	Jun 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2004	Total Coliform Rule
Jun 1, 2004	Jun 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2004	Total Coliform Rule
Jun 1, 2004	Jun 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2004	Total Coliform Rule
Jul 1, 1999	Jul 31, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1999	Total Coliform Rule
Jul 1, 1999	Jul 31, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1999	Total Coliform Rule
Jul 1, 1999	Jul 31, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1999	Total Coliform Rule
Jul 1, 1999	Jul 31, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1999	Total Coliform Rule
Jul 1, 1999	Jul 31, 1999	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1999	Total Coliform Rule
Jul 1, 1999	Sep 30, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1999	Nitrate Rule
Jul 1, 1999	Sep 30, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1999	Nitrate Rule
Jul 1, 1999	Sep 30, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1999	Nitrate Rule
Jul 1, 1999	Sep 30, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 1999	Nitrate 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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