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MADISON WATER UTILITY

Wisconsin — Community Water System — PWSID: WI1130224

System Information

PWSIDWI1130224
System NameMADISON WATER UTILITY
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerYes
First ReportedJan 28, 1981
Last ReportedDec 17, 2025

Location & Contact

StateWisconsin
CityMADISON
ZIP Code53713
Address119 E OLIN
OrganizationKUMAR, KRISHNA - GEN MGR
Phone—

Population & Service

Population Served272,000
Service Connections100,740

Drinking Water Violations (296)

This water system has 296 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 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved Dec 13, 2024 Lead and Copper Rule Revisions
Oct 17, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2004 — Public Notice Other No No — — — Resolved Feb 22, 2011 Public Notice Rule and Revised PN Rule
Jan 1, 2001 Mar 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Mar 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2001 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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