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WEST CHICAGO

Illinois — Community Water System — PWSID: IL0430900

System Information

PWSIDIL0430900
System NameWEST CHICAGO
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
CityWEST CHICAGO
ZIP Code60185
Address475 MAIN ST
OrganizationPATEL, MEHUL
Phone630-293-2255

Population & Service

Population Served25,166
Service Connections6,869

Drinking Water Violations (141)

This water system has 141 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
Oct 1, 2005 Dec 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Oct 1, 2005 Dec 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Dec 31, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Jul 1, 2005 Sep 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Sep 30, 2005 Radionuclides and Revised Rad Rule
Apr 8, 2005 — Public Notice Other No No — — — Resolved May 9, 2005 Public Notice Rule and Revised PN Rule
Apr 8, 2005 — Public Notice Other No No — — — Resolved May 9, 2005 Public Notice Rule and Revised PN Rule
Apr 8, 2005 — Public Notice Other No No — — — Resolved May 9, 2005 Public Notice Rule and Revised PN Rule
Apr 8, 2005 — Public Notice Other No No — — — Resolved May 9, 2005 Public Notice Rule and Revised PN Rule
Apr 1, 2005 Jun 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Combined Radium (-226 and -228) MCL Yes No 14 PCI/L 5 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Apr 1, 2005 Jun 30, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 33 PCI/L 15 pCi/L — Resolved Jun 30, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14.475 PCI/L 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14.475 PCI/L 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14.475 PCI/L 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14.475 PCI/L 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14.475 PCI/L 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Combined Radium (-226 and -228) MCL Yes No 14.475 PCI/L 5 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 32.775 PCI/L 15 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 32.775 PCI/L 15 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 32.775 PCI/L 15 pCi/L — Resolved Mar 31, 2005 Radionuclides and Revised Rad Rule
Jan 1, 2005 Mar 31, 2005 Gross Alpha, Excl. Radon and U MCL Yes No 32.775 PCI/L 15 pCi/L — Resolved Mar 31, 2005 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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