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LAKE IN THE HILLS

Illinois — Community Water System — PWSID: IL1110400

System Information

PWSIDIL1110400
System NameLAKE IN THE HILLS
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
CityLAKE IN THE HILLS
ZIP Code60156
Address9010 HALIGUS ROAD
OrganizationRIVERA, KEVIN
Phone847-960-7520

Population & Service

Population Served28,661
Service Connections9,590

Drinking Water Violations (40)

This water system has 40 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
Jan 1, 2025 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Jul 8, 2013 Consumer Confidence Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Jul 8, 2013 Consumer Confidence Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2006 Nitrate Rule
Jan 1, 2006 Dec 31, 2006 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2006 Nitrate Rule
Sep 10, 2005 — Public Notice Other No No — — — Resolved Sep 28, 2005 Public Notice Rule and Revised PN Rule
Sep 10, 2005 — Public Notice Other No No — — — Resolved Sep 28, 2005 Public Notice Rule and Revised PN Rule
Jun 1, 2005 Jun 30, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2005 Total Coliform Rule
Jun 1, 2005 Jun 30, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2005 Total Coliform Rule
Jun 1, 2005 Jun 30, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2005 Total Coliform Rule
Jun 1, 2005 Jun 30, 2005 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2005 Total Coliform Rule
Jan 1, 1999 Mar 31, 1999 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 1999 Nitrate Rule
Jan 1, 1999 Mar 31, 1999 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 1999 Nitrate Rule
Jan 1, 1999 Mar 31, 1999 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 1999 Nitrate Rule
Jan 1, 1999 Mar 31, 1999 Barium MR No Yes — 2 mg/L — Resolved Mar 31, 1999 Inorganic Chemicals
Jan 1, 1999 Mar 31, 1999 Barium MR No Yes — 2 mg/L — Resolved Mar 31, 1999 Inorganic Chemicals
Jan 1, 1999 Mar 31, 1999 Barium MR No Yes — 2 mg/L — Resolved Mar 31, 1999 Inorganic Chemicals
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MR No No — 5% of samples — Archived Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MR No No — 5% of samples — Archived Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MR No No — 5% of samples — Archived Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Archived Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Archived Jul 31, 1997 Total Coliform Rule
Jul 1, 1997 Jul 31, 1997 Coliform (TCR) MCL Yes No — 5% of samples — Archived Jul 31, 1997 Total Coliform Rule
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Jan 31, 1995 Total Coliform Rule
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Jan 31, 1995 Total Coliform Rule
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Jan 31, 1995 Total Coliform Rule
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Jan 31, 1995 Total Coliform Rule
Sep 14, 1984 Sep 13, 1988 Combined Radium (-226 and -228) MCL Yes No 6.2 5 pCi/L — Resolved Jul 1, 1986 Radionuclides and Revised Rad Rule
Sep 14, 1984 Sep 13, 1988 Combined Radium (-226 and -228) MCL Yes No 6.2 5 pCi/L — Resolved Jul 1, 1986 Radionuclides and Revised Rad Rule
Sep 14, 1984 Sep 13, 1988 Combined Radium (-226 and -228) MCL Yes No 6.2 5 pCi/L — Resolved Jul 1, 1986 Radionuclides and Revised Rad Rule
Sep 14, 1984 Sep 13, 1988 Combined Radium (-226 and -228) MCL Yes No 6.2 5 pCi/L — Resolved Jul 1, 1986 Radionuclides and Revised Rad Rule
Sep 14, 1984 Sep 13, 1988 Combined Radium (-226 and -228) MCL Yes No 6.2 5 pCi/L — Resolved Jul 1, 1986 Radionuclides and Revised Rad Rule
Sep 14, 1984 Sep 13, 1988 Combined Radium (-226 and -228) MCL Yes No 6.2 5 pCi/L — Resolved Jul 1, 1986 Radionuclides and Revised Rad Rule
Sep 14, 1984 Sep 13, 1988 Combined Radium (-226 and -228) MCL Yes No 6.2 5 pCi/L — Resolved Jul 1, 1986 Radionuclides and Revised Rad Rule
Jun 30, 1977 Jun 29, 1981 Gross Alpha, Excl. Radon and U MR No No — 15 pCi/L — Archived Jun 29, 1981 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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