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LOCKPORT

Illinois — Community Water System — PWSID: IL1970500

System Information

PWSIDIL1970500
System NameLOCKPORT
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1981
Last ReportedDec 4, 2025

Location & Contact

StateIllinois
CityLOCKPORT
ZIP Code60441
Address17112 Prime Blvd
OrganizationLOVERING, BRIAN
Phone815-838-0549

Population & Service

Population Served23,100
Service Connections9,839

Drinking Water Violations (185)

This water system has 185 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 2, 2025 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Unaddressed — Lead and Copper Rule Revisions
Jul 2, 2025 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Unaddressed — Lead and Copper Rule Revisions
Jun 1, 2015 Jun 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2015 Total Coliform Rule
Jun 1, 2015 Jun 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2015 Total Coliform Rule
Jun 1, 2015 Jun 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2015 Total Coliform Rule
Jun 1, 2015 Jun 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2015 Total Coliform Rule
Jul 1, 2012 — E. COLI MR No Yes — — — Resolved Jul 31, 2012 Ground Water Rule
Jul 1, 2012 — E. COLI MR No Yes — — — Resolved Jul 31, 2012 Ground Water Rule
Jul 1, 2012 — E. COLI MR No Yes — — — Resolved Jul 31, 2012 Ground Water Rule
Jul 1, 2012 — E. COLI MR No Yes — — — Resolved Jul 31, 2012 Ground Water Rule
Jan 1, 2011 Dec 31, 2013 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Jan 1, 2011 Dec 31, 2013 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Jan 1, 2011 Dec 31, 2013 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Jan 1, 2011 Dec 31, 2013 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Aug 15, 2009 — Public Notice Other No No — — — Resolved Sep 14, 2009 Public Notice Rule and Revised PN Rule
Aug 15, 2009 — Public Notice Other No No — — — Resolved Sep 14, 2009 Public Notice Rule and Revised PN Rule
Aug 15, 2009 — Public Notice Other No No — — — Resolved Sep 14, 2009 Public Notice Rule and Revised PN Rule
Aug 15, 2009 — Public Notice Other No No — — — Resolved Sep 14, 2009 Public Notice Rule and Revised PN Rule
Jul 1, 2008 Jul 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2008 Total Coliform Rule
Jul 1, 2008 Jul 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2008 Total Coliform Rule
Jul 1, 2008 Jul 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2008 Total Coliform Rule
Dec 1, 2006 — Public Notice Other No No — — — Resolved Feb 8, 2008 Public Notice Rule and Revised PN Rule
Dec 1, 2006 — Public Notice Other No No — — — Resolved Feb 8, 2008 Public Notice Rule and Revised PN Rule
Oct 1, 2006 Dec 31, 2006 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2005 Mar 31, 2005 Combined Uranium MR No Yes — 30 ug/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Uranium MR No Yes — 30 ug/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Uranium MR No Yes — 30 ug/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Uranium MR No Yes — 30 ug/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2001 Sep 30, 2002 Combined Radium (-226 and -228) MCL Yes No 11.7 5 pCi/L — Resolved Sep 30, 2002 Radionuclides and Revised Rad Rule
Jul 1, 1999 Jul 31, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Archived Jul 31, 1999 Total Coliform Rule
Jul 1, 1999 Jul 31, 1999 Coliform (TCR) MCL Yes No — 5% of samples — Archived Jul 31, 1999 Total Coliform Rule
Apr 1, 1999 Oct 31, 2002 Gross Alpha, Excl. Radon and U MCL Yes No 26.5 15 pCi/L — Resolved Oct 31, 2002 Radionuclides and Revised Rad Rule
Apr 1, 1999 Oct 31, 2002 Gross Alpha, Excl. Radon and U MCL Yes No 26.5 15 pCi/L — Resolved Oct 31, 2002 Radionuclides and Revised Rad Rule
Apr 1, 1999 Oct 31, 2002 Gross Alpha, Excl. Radon and U MCL Yes No 26.5 15 pCi/L — Resolved Oct 31, 2002 Radionuclides and Revised Rad Rule
Apr 1, 1999 Oct 31, 2002 Gross Alpha, Excl. Radon and U MCL Yes No 26.5 15 pCi/L — Resolved Oct 31, 2002 Radionuclides and Revised Rad Rule
Dec 1, 1998 Dec 31, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived Dec 31, 1998 Total Coliform Rule
Dec 1, 1998 Dec 31, 1998 Coliform (TCR) MCL Yes No — 5% of samples — Archived Dec 31, 1998 Total Coliform Rule
Dec 1, 1998 Dec 31, 1998 Coliform (TCR) MR No No — 5% of samples — Archived Dec 31, 1998 Total Coliform Rule
Dec 1, 1998 Dec 31, 1998 Coliform (TCR) MR No No — 5% of samples — Archived Dec 31, 1998 Total Coliform Rule
Oct 1, 1997 Sep 30, 2001 Combined Radium (-226 and -228) MCL Yes No 11.7 5 pCi/L — Resolved Sep 30, 2001 Radionuclides and Revised Rad Rule
Oct 1, 1997 Sep 30, 2001 Combined Radium (-226 and -228) MCL Yes No 11.7 5 pCi/L — Resolved Sep 30, 2001 Radionuclides and Revised Rad Rule
Oct 1, 1997 Sep 30, 2001 Combined Radium (-226 and -228) MCL Yes No 11.7 5 pCi/L — Resolved Sep 30, 2001 Radionuclides and Revised Rad Rule
Oct 1, 1997 Sep 30, 2001 Combined Radium (-226 and -228) MCL Yes No 11.7 5 pCi/L — Resolved Sep 30, 2001 Radionuclides and Revised Rad 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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