WILLOWBROOK

Illinois — Community Water System — PWSID: IL0431100

System Information

PWSIDIL0431100
System NameWILLOWBROOK
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1981
Last ReportedFeb 26, 2026

Location & Contact

StateIllinois
CityWILLOWBROOK
ZIP Code60527
Address835 Midway Dr
OrganizationHALLORAN, SEAN
Phone630-323-8215

Population & Service

Population Served9,000
Service Connections2,207

Drinking Water Violations (33)

This water system has 33 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 RPT No No Unaddressed
Jul 2, 2025 RPT No No Unaddressed
Jul 1, 2025 Other No No Unaddressed
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.060 mg/L Resolved Dec 31, 2024
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.060 mg/L Resolved Dec 31, 2024
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.060 mg/L Resolved Dec 31, 2024
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.060 mg/L Resolved Dec 31, 2024
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.080 mg/L Resolved Dec 31, 2024
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.080 mg/L Resolved Dec 31, 2024
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.080 mg/L Resolved Dec 31, 2024
Oct 1, 2024 Dec 31, 2024 MR No Yes 0.080 mg/L Resolved Dec 31, 2024
Jul 1, 2023 Other No No Resolved Feb 5, 2024
Jul 1, 2023 Other No No Resolved Feb 5, 2024
Jul 1, 2022 Other No No Resolved Feb 5, 2024
Jul 1, 2022 Other No No Resolved Feb 5, 2024
Jul 1, 2021 Other No No Resolved Aug 2, 2021
Jul 1, 2021 Other No No Resolved Aug 2, 2021
Dec 30, 2020 MR No No TT Resolved Jan 14, 2021
Dec 30, 2020 MR No No TT Resolved Jan 14, 2021
Jul 1, 2013 Other No No Resolved Jul 29, 2013
Jul 1, 2013 Other No No Resolved Jul 29, 2013
Jul 1, 1993 Jul 31, 1993 MR No No 5% of samples Archived Jul 31, 1993
Jul 1, 1993 Jul 31, 1993 MR No No 5% of samples Archived Jul 31, 1993
Jul 1, 1993 Jul 31, 1993 MR No No 5% of samples Archived Jul 31, 1993
Dec 6, 1985 Dec 5, 1989 MCL Yes No 6.1 5 pCi/L Archived Dec 5, 1989
Dec 6, 1985 Dec 5, 1989 MCL Yes No 6.1 5 pCi/L Archived Dec 5, 1989
Dec 6, 1985 Dec 5, 1989 MCL Yes No 6.1 5 pCi/L Archived Dec 5, 1989
Dec 6, 1985 Dec 5, 1989 MCL Yes No 6.1 5 pCi/L Archived Dec 5, 1989
Dec 6, 1985 Dec 5, 1989 MCL Yes No 6.1 5 pCi/L Archived Dec 5, 1989
Dec 6, 1985 Dec 5, 1989 MCL Yes No 6.1 5 pCi/L Archived Dec 5, 1989
Dec 6, 1985 Dec 5, 1989 MCL Yes No 6.1 5 pCi/L Archived Dec 5, 1989
Jun 30, 1977 Jun 29, 1981 MR No No 15 pCi/L Archived Jun 29, 1981
No No

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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