FLAT ROCK

Illinois — Community Water System — PWSID: IL0330050

System Information

PWSIDIL0330050
System NameFLAT ROCK
System TypeCommunity Water System
Water SourceGround Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1981
Last ReportedFeb 26, 2026

Location & Contact

StateIllinois
CityFLAT ROCK
ZIP Code62427
Address106 S Main St
OrganizationRALSTON, VIC
Phone812-830-9415

Population & Service

Population Served325
Service Connections168

Drinking Water Violations (21)

This water system has 21 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 2, 2025 RPT No No Unaddressed
Jul 1, 2025 Other No No Unaddressed
Jul 1, 2024 Other No No Resolved Aug 8, 2024
Jul 1, 2024 Other No No Resolved Aug 8, 2024
Jul 1, 2024 Other No No Unaddressed
Oct 1, 1997 Dec 31, 1997 MCL Yes No 1.8 1 mg/L Resolved Nov 17, 1997
Oct 1, 1997 Dec 31, 1997 MCL Yes No 1.8 1 mg/L Resolved Nov 17, 1997
Oct 1, 1997 Dec 31, 1997 MCL Yes No 1.8 1 mg/L Resolved Nov 17, 1997
Jul 1, 1997 Sep 30, 1997 MCL Yes No 1.8 1 mg/L Resolved Sep 30, 1997
Jul 1, 1997 Sep 30, 1997 MCL Yes No 1.8 1 mg/L Resolved Sep 30, 1997
Jul 1, 1997 Sep 30, 1997 MCL Yes No 1.8 1 mg/L Resolved Sep 30, 1997
Jul 1, 1997 Sep 30, 1997 MCL Yes No 1.8 1 mg/L Resolved Sep 30, 1997
Nov 1, 1995 Nov 30, 1995 MR No No 5% of samples Archived Nov 30, 1995
Nov 1, 1995 Nov 30, 1995 MR No No 5% of samples Archived Nov 30, 1995
Jun 30, 1977 Jun 29, 1981 MR No No 15 pCi/L Archived Jun 29, 1981
No No
No No
No No
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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