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MUKWONAGO WATERWORKS

Wisconsin — Community Water System — PWSID: WI2680209

System Information

PWSIDWI2680209
System NameMUKWONAGO WATERWORKS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedJan 28, 1981
Last ReportedDec 17, 2025

Location & Contact

StateWisconsin
CityMUKWONAGO
ZIP Code53149
Address440 RIVER CREST CT
OrganizationDYKSTRA, DIANA - VILLAGE CLERK
Phone—

Population & Service

Population Served8,190
Service Connections3,033

Drinking Water Violations (228)

This water system has 228 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, 2015 Oct 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Dec 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Nov 13, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Nov 13, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Nov 13, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Nov 13, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2015 Total Coliform Rule
Jan 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Jan 11, 2013 Lead and Copper Rule
Jan 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Jan 11, 2013 Lead and Copper Rule
Oct 1, 2011 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Oct 1, 2011 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jan 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2010 — Consumer Confidence Rule Other No No — — — Resolved Jul 16, 2010 Consumer Confidence Rule
Jul 1, 2010 — Consumer Confidence Rule Other No No — — — Resolved Jul 16, 2010 Consumer Confidence Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2008 Consumer Confidence Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2008 Consumer Confidence Rule
Oct 1, 2005 Dec 31, 2005 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2005 Dec 31, 2005 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2005 Dec 31, 2005 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2005 Dec 31, 2005 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005 Jun 30, 2005 TTHM MR No No — 0.080 mg/L — Resolved Jun 30, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005 Jun 30, 2005 TTHM MR No No — 0.080 mg/L — Resolved Jun 30, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005 Jun 30, 2005 TTHM MR No No — 0.080 mg/L — Resolved Jun 30, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005 Jun 30, 2005 TTHM MR No No — 0.080 mg/L — Resolved Jun 30, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2004 Nov 30, 2004 Coliform (TCR) MR No No — 5% of samples — Archived Nov 30, 2004 Total Coliform Rule
Nov 1, 2004 Nov 30, 2004 Coliform (TCR) MR No No — 5% of samples — Archived Nov 30, 2004 Total Coliform Rule
Nov 1, 2004 Nov 30, 2004 Coliform (TCR) MR No No — 5% of samples — Archived Nov 30, 2004 Total Coliform Rule
Nov 1, 2004 Nov 30, 2004 Coliform (TCR) MR No No — 5% of samples — Archived Nov 30, 2004 Total Coliform Rule
Oct 1, 2004 Dec 31, 2004 Chlorine MR No No — 4.0 mg/L — Archived Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2004 Dec 31, 2004 Chlorine MR No No — 4.0 mg/L — Archived Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2004 Dec 31, 2004 Chlorine MR No No — 4.0 mg/L — Archived Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2004 Dec 31, 2004 Chlorine MR No No — 4.0 mg/L — Archived Dec 31, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2004 Dec 31, 2004 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Nov 22, 2004 Radionuclides and Revised Rad 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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