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ROCK FALLS

Illinois — Community Water System — PWSID: IL1950450

System Information

PWSIDIL1950450
System NameROCK FALLS
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
CityROCK FALLS
ZIP Code61071
Address603 WEST 10th STREET
OrganizationBLACKERT, ROBBIN
Phone815-564-1366

Population & Service

Population Served8,620
Service Connections4,150

Drinking Water Violations (127)

This water system has 127 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 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved May 16, 2024 Consumer Confidence Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved May 16, 2024 Consumer Confidence Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No No — 4.0 mg/L — Resolved Jun 22, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No No — 4.0 mg/L — Resolved Jun 22, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No No — 4.0 mg/L — Resolved Jun 22, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No No — 4.0 mg/L — Resolved Jun 22, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2022 Dec 31, 2022 Revised Total Coliform Rule MON No No — — — Resolved Dec 31, 2022 Revised Total Coliform Rule
Dec 1, 2022 Dec 31, 2022 Revised Total Coliform Rule MON No No — — — Resolved Dec 31, 2022 Revised Total Coliform Rule
Dec 1, 2022 Dec 31, 2022 Revised Total Coliform Rule MON No No — — — Resolved Dec 31, 2022 Revised Total Coliform Rule
Dec 1, 2022 Dec 31, 2022 Revised Total Coliform Rule MON No No — — — Resolved Dec 31, 2022 Revised Total Coliform Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jul 28, 2022 Consumer Confidence Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jul 28, 2022 Consumer Confidence Rule
Jul 1, 2004 Sep 30, 2004 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Benzene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Toluene MR No Yes — 1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Styrene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals
Jul 1, 2004 Sep 30, 2004 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Sep 30, 2004 Volatile Organic Chemicals

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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