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WINTERSET MUNICIPAL WATERWORKS

Iowa — Community Water System — PWSID: IA6171029

System Information

PWSIDIA6171029
System NameWINTERSET MUNICIPAL WATERWORKS
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region07
Serves SchoolNo
WholesalerNo
First ReportedFeb 27, 1979
Last ReportedDec 19, 2025

Location & Contact

StateIowa
CityWINTERSET
ZIP Code50273
AddressATTN MICHAEL HAM WATER SUPERINTENDENT
OrganizationWINTERSET MUNICIPAL WATERWORKS
Phone515-462-3601

Population & Service

Population Served5,428
Service Connections2,600

Drinking Water Violations (138)

This water system has 138 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, 2018 Oct 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Oct 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Oct 1, 2018 Oct 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Oct 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Oct 1, 2018 Oct 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Oct 31, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2007 May 31, 2007 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2007 Nitrate Rule
May 1, 2007 May 31, 2007 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2007 Nitrate Rule
May 1, 2007 May 31, 2007 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2007 Nitrate Rule
May 1, 2007 May 31, 2007 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2007 Nitrate Rule
Jan 1, 2007 Mar 31, 2007 TTHM MCL Yes No .081 0.080 mg/L — Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 TTHM MCL Yes No .081 0.080 mg/L — Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 TTHM MCL Yes No .081 0.080 mg/L — Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 TTHM MCL Yes No .081 0.080 mg/L — Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 TTHM MCL Yes No .083 0.080 mg/L — Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 TTHM MCL Yes No .083 0.080 mg/L — Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 TTHM MCL Yes No .083 0.080 mg/L — Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2005 Dec 31, 2005 Coliform (TCR) MR No No — 5% of samples — Archived Dec 31, 2005 Total Coliform Rule
Jun 1, 2005 Jun 30, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved Jun 30, 2005 Nitrate Rule
Jun 1, 2005 Jun 30, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved Jun 30, 2005 Nitrate Rule
Jun 1, 2005 Jun 30, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved Jun 30, 2005 Nitrate Rule
Jun 1, 2005 Jun 30, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved Jun 30, 2005 Nitrate Rule
Jun 1, 2005 Jun 30, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved Jun 30, 2005 Nitrate Rule
Jun 1, 2005 Jun 30, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved Jun 30, 2005 Nitrate Rule
May 1, 2005 May 31, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved May 31, 2005 Nitrate Rule
May 1, 2005 May 31, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved May 31, 2005 Nitrate Rule
May 1, 2005 May 31, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved May 31, 2005 Nitrate Rule
May 1, 2005 May 31, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved May 31, 2005 Nitrate Rule
May 1, 2005 May 31, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved May 31, 2005 Nitrate Rule
May 1, 2005 May 31, 2005 Nitrate MCL Yes No 12 10 mg/L — Resolved May 31, 2005 Nitrate Rule
Oct 1, 2004 Dec 31, 2004 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2004 Dec 31, 2004 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2004 Dec 31, 2004 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2004 Dec 31, 2004 TTHM MCL Yes No .081 0.080 mg/L — Resolved Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2004 Jun 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 2004 Nitrate Rule
Jun 1, 2004 Jun 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 2004 Nitrate Rule
Jun 1, 2004 Jun 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 2004 Nitrate Rule
Jun 1, 2004 Jun 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 2004 Nitrate Rule
Jun 1, 2004 Jun 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Jun 30, 2004 Nitrate Rule
May 1, 2004 May 31, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2004 Nitrate Rule
May 1, 2004 May 31, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2004 Nitrate Rule
May 1, 2004 May 31, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2004 Nitrate Rule
May 1, 2004 May 31, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2004 Nitrate Rule
May 1, 2004 May 31, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2004 Nitrate Rule
May 1, 2004 May 31, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved May 31, 2004 Nitrate Rule
Apr 1, 2004 Apr 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Apr 30, 2004 Nitrate Rule
Apr 1, 2004 Apr 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Apr 30, 2004 Nitrate Rule
Apr 1, 2004 Jun 30, 2004 TTHM MCL Yes No .081 0.080 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2004 Apr 30, 2004 Nitrate MCL Yes No 11 10 mg/L — Resolved Apr 30, 2004 Nitrate 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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