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MCCALLSBURG WATER SUPPLY

Iowa — Community Water System — PWSID: IA8552010

System Information

PWSIDIA8552010
System NameMCCALLSBURG WATER SUPPLY
System TypeCommunity Water System
Water SourceGround Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region07
Serves SchoolNo
WholesalerNo
First ReportedFeb 27, 1979
Last ReportedDec 19, 2025

Location & Contact

StateIowa
CityCOLO
ZIP Code50065
AddressATTN AMY KOHLWES
OrganizationMC CALLSBURG WATER SUPPLY
Phone515-460-4750

Population & Service

Population Served353
Service Connections147

Drinking Water Violations (67)

This water system has 67 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
Nov 10, 2020 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Nov 10, 2020 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Nov 10, 2020 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Nov 10, 2020 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Nov 10, 2020 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Nov 10, 2020 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Aug 1, 2019 Aug 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Jul 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Jul 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jul 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jul 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jul 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2019 Aug 31, 2019 TTHM MR No Yes — 0.080 mg/L — Resolved Jul 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 Aug 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 24, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 24, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 24, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Sep 30, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 24, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Jul 31, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2010 Total Coliform Rule
Jul 1, 2010 Jul 31, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2010 Total Coliform Rule
Jul 1, 2010 Jul 31, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2010 Total Coliform Rule
Jul 1, 2010 Jul 31, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2010 Total Coliform Rule
Nov 1, 1991 Nov 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1991 Total Coliform Rule
Nov 1, 1991 Nov 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1991 Total Coliform Rule
Nov 1, 1991 Nov 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 1991 Total Coliform Rule
Oct 1, 1991 Oct 31, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 1991 Total Coliform Rule
Oct 1, 1991 Oct 31, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 1991 Total Coliform Rule
Oct 1, 1991 Oct 31, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 1991 Total Coliform Rule
Sep 1, 1991 Sep 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1991 Total Coliform Rule
Sep 1, 1991 Sep 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1991 Total Coliform Rule
Sep 1, 1991 Sep 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1991 Total Coliform Rule
Sep 1, 1991 Sep 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1991 Total Coliform Rule
Sep 1, 1991 Sep 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1991 Total Coliform Rule
Sep 1, 1991 Sep 30, 1991 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 1991 Total Coliform Rule
Apr 1, 1990 — Lead and Copper Rule MR No No — TT — Resolved Jul 30, 1990 Lead and Copper Rule
Jul 1, 1987 Jun 30, 1990 Chromium MR No Yes — 0.1 mg/L — Resolved Jun 30, 1990 Inorganic Chemicals
Jul 1, 1987 Jun 30, 1990 Mercury MR No Yes — 0.002 mg/L — Resolved Jun 30, 1990 Inorganic Chemicals
Jul 1, 1987 Jun 30, 1990 Mercury MR No Yes — 0.002 mg/L — Resolved Jun 30, 1990 Inorganic Chemicals
Jul 1, 1987 Jun 30, 1990 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 1990 Arsenic Rule
Jul 1, 1987 Jun 30, 1990 Barium MR No Yes — 2 mg/L — Resolved Jun 30, 1990 Inorganic Chemicals
Jul 1, 1987 Jun 30, 1990 Barium MR No Yes — 2 mg/L — Resolved Jun 30, 1990 Inorganic Chemicals
Jul 1, 1987 Jun 30, 1990 Fluoride MR No Yes — 4.0 mg/L — Resolved Jun 30, 1990 Inorganic 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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