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UNION GROVE WATERWORKS

Wisconsin — Community Water System — PWSID: WI2520200

System Information

PWSIDWI2520200
System NameUNION GROVE 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
CityUNION GROVE
ZIP Code53182
Address925 15TH AVE
OrganizationUNION GROVE VILLAGE CLERK
Phone—

Population & Service

Population Served4,900
Service Connections1,814

Drinking Water Violations (46)

This water system has 46 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 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved Jun 10, 2025 Lead and Copper Rule Revisions
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Mar 14, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Mar 14, 2018 Lead and Copper Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2014 Dec 31, 2014 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2014 Radionuclides and Revised Rad Rule
Oct 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Jun 7, 2012 Consumer Confidence Rule
Oct 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Jun 7, 2012 Consumer Confidence Rule
Jul 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Jun 7, 2012 Consumer Confidence Rule
Jul 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Jun 7, 2012 Consumer Confidence Rule
Jan 27, 2008 — Public Notice Other No No — — — Resolved Feb 22, 2011 Public Notice Rule and Revised PN Rule
Oct 1, 2007 Dec 31, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 26.43 PCI/L 15 pCi/L 15.5 Resolved Dec 31, 2007 Radionuclides and Revised Rad Rule
Oct 1, 2007 Dec 31, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 26.43 PCI/L 15 pCi/L 15.5 Resolved Dec 31, 2007 Radionuclides and Revised Rad Rule
Oct 1, 2007 Dec 31, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 26.43 PCI/L 15 pCi/L 15.5 Resolved Dec 31, 2007 Radionuclides and Revised Rad Rule
Oct 1, 2007 Dec 31, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 26.43 PCI/L 15 pCi/L 15.5 Resolved Dec 31, 2007 Radionuclides and Revised Rad Rule
Mar 13, 2002 Apr 30, 2002 Mercury MR No Yes — 0.002 mg/L — Resolved Apr 30, 2002 Inorganic Chemicals
Mar 13, 2002 Apr 30, 2002 Mercury MR No Yes — 0.002 mg/L — Resolved Apr 30, 2002 Inorganic Chemicals
Mar 13, 2002 Apr 30, 2002 Mercury MR No Yes — 0.002 mg/L — Resolved Apr 30, 2002 Inorganic Chemicals
Mar 13, 2002 Apr 30, 2002 Mercury MR No Yes — 0.002 mg/L — Resolved Apr 30, 2002 Inorganic Chemicals
Mar 13, 2002 Apr 30, 2002 Mercury MR No Yes — 0.002 mg/L — Resolved Apr 30, 2002 Inorganic Chemicals
Jan 1, 2001 May 9, 2007 Combined Radium (-226 and -228) MCL Yes No 5.7 PCI/L 5 pCi/L 5.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Jan 1, 2001 May 9, 2007 Combined Radium (-226 and -228) MCL Yes No 5.7 PCI/L 5 pCi/L 5.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Jan 1, 2001 May 9, 2007 Combined Radium (-226 and -228) MCL Yes No 5.7 PCI/L 5 pCi/L 5.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Jul 1, 2000 — Consumer Confidence Rule Other No No — — — Resolved Jun 20, 2001 Consumer Confidence Rule
Jul 1, 2000 — Consumer Confidence Rule Other No No — — — Resolved Jun 20, 2001 Consumer Confidence Rule
Jan 1, 1999 May 9, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 25 PCI/L 15 pCi/L 15.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Jan 1, 1999 May 9, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 25 PCI/L 15 pCi/L 15.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Jan 1, 1999 May 9, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 25 PCI/L 15 pCi/L 15.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Oct 1, 1998 May 9, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 17 PCI/L 15 pCi/L 15.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Oct 1, 1998 May 9, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 17 PCI/L 15 pCi/L 15.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Oct 1, 1998 May 9, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 17 PCI/L 15 pCi/L 15.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Oct 1, 1998 May 9, 2007 Gross Alpha, Excl. Radon and U MCL Yes No 17 PCI/L 15 pCi/L 15.5 Resolved May 9, 2007 Radionuclides and Revised Rad Rule
Apr 1, 1994 Apr 30, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1994 Total Coliform Rule
Apr 1, 1994 Apr 30, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1994 Total Coliform Rule
Apr 1, 1994 Apr 30, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1994 Total Coliform Rule
Apr 1, 1994 Apr 30, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1994 Total Coliform Rule
Oct 1, 1984 Dec 31, 1984 Combined Radium (-226 and -228) MCL Yes No 4.6 5 pCi/L 5 Resolved Dec 31, 1984 Radionuclides and Revised Rad Rule
Sep 12, 1983 Jun 11, 1984 Combined Radium (-226 and -228) MCL Yes No 4.6 5 pCi/L 10 Resolved Jun 11, 1984 Radionuclides and Revised Rad Rule
Sep 12, 1983 Sep 11, 1987 Combined Radium (-226 and -228) MCL Yes No — 5 pCi/L — Resolved Sep 30, 1985 Radionuclides and Revised Rad Rule
Sep 12, 1983 Oct 11, 1983 Combined Radium (-226 and -228) MCL Yes No 5.7 5 pCi/L 5 Resolved Oct 11, 1983 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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