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TOMAH WATERWORKS

Wisconsin — Community Water System — PWSID: WI6420254

System Information

PWSIDWI6420254
System NameTOMAH 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
CityTOMAH
ZIP Code54660-0151
Address819 SUPERIOR AVE
OrganizationCITY OF TOMAH
Phone—

Population & Service

Population Served9,192
Service Connections3,139

Drinking Water Violations (86)

This water system has 86 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
Apr 1, 2025 Jun 30, 2025 Nitrate MCL Yes No 11.13 MG/L 10 mg/L 10.5 Archived Jun 30, 2025 Nitrate Rule
Apr 1, 2025 Jun 30, 2025 Nitrate MCL Yes No 11.13 MG/L 10 mg/L 10.5 Archived Jun 30, 2025 Nitrate Rule
Apr 1, 2018 Jun 30, 2018 Combined Radium (-226 and -228) MCL Yes No 6.95 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2018 Radionuclides and Revised Rad Rule
Apr 1, 2018 Jun 30, 2018 Combined Radium (-226 and -228) MCL Yes No 6.95 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2018 Radionuclides and Revised Rad Rule
Apr 1, 2018 Jun 30, 2018 Combined Radium (-226 and -228) MCL Yes No 6.95 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2018 Radionuclides and Revised Rad Rule
Apr 1, 2018 Jun 30, 2018 Combined Radium (-226 and -228) MCL Yes No 6.95 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2018 Radionuclides and Revised Rad Rule
Apr 1, 2018 Jun 30, 2018 Combined Radium (-226 and -228) MCL Yes No 6.95 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2018 Radionuclides and Revised Rad Rule
Apr 1, 2018 Jun 30, 2018 Combined Radium (-226 and -228) MCL Yes No 6.95 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MCL Yes No 7.33 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MCL Yes No 7.33 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MCL Yes No 7.33 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MCL Yes No 7.33 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MCL Yes No 7.33 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MCL Yes No 7.33 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MCL Yes No 7.33 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.75 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.75 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.75 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.75 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.75 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2017 Dec 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.75 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2017 Radionuclides and Revised Rad Rule
Apr 1, 2017 Jun 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2017 Radionuclides and Revised Rad Rule
Apr 1, 2017 Jun 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2017 Radionuclides and Revised Rad Rule
Apr 1, 2017 Jun 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2017 Radionuclides and Revised Rad Rule
Apr 1, 2017 Jun 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2017 Radionuclides and Revised Rad Rule
Apr 1, 2017 Jun 30, 2017 Combined Radium (-226 and -228) MCL Yes No 6.35 PCI/L 5 pCi/L 5.5 Resolved Jun 30, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.13 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.13 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.13 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.13 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.13 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.13 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2017 Radionuclides and Revised Rad Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MCL Yes No 6.13 PCI/L 5 pCi/L 5.5 Resolved Mar 31, 2017 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 6.5 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 6.5 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 6.5 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 6.5 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 6.5 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 6.5 PCI/L 5 pCi/L 5.5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Jul 26, 2016 — Public Notice Other No No — — — Resolved Nov 1, 2016 Public Notice Rule and Revised PN Rule
Jul 1, 2016 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 6.53 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 6.53 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 6.53 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 6.53 PCI/L 5 pCi/L 5.5 Resolved Sep 30, 2016 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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