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LONE ROCK WATERWORKS

Wisconsin — Community Water System — PWSID: WI1530061

System Information

PWSIDWI1530061
System NameLONE ROCK 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
CityLONE ROCK
ZIP Code53556-0338
Address314 E FOREST ST
OrganizationMARSHALL, ESTHER - TREASURER
Phone—

Population & Service

Population Served895
Service Connections267

Drinking Water Violations (29)

This water system has 29 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, 2023 Oct 31, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Oct 31, 2023 Nitrate Rule
Oct 1, 2023 Oct 31, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Oct 31, 2023 Nitrate Rule
Oct 1, 2023 Oct 31, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Oct 31, 2023 Nitrate Rule
Oct 1, 2023 Oct 31, 2023 Nitrate MR No Yes — 10 mg/L — Resolved Oct 31, 2023 Nitrate Rule
Feb 1, 2021 — Lead and Copper Rule MR No No — TT — Resolved Mar 3, 2021 Lead and Copper Rule
Nov 1, 2020 — Lead and Copper Rule TT Yes No — TT — Resolved Mar 1, 2021 Lead and Copper Rule
Nov 1, 2020 — Lead and Copper Rule TT Yes No — TT — Resolved Mar 1, 2021 Lead and Copper Rule
Nov 1, 2020 — Lead and Copper Rule TT Yes No — TT — Resolved Mar 1, 2021 Lead and Copper Rule
Feb 1, 2016 Feb 29, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 29, 2016 Total Coliform Rule
Feb 1, 2016 Feb 29, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 29, 2016 Total Coliform Rule
Feb 1, 2016 Feb 29, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 29, 2016 Total Coliform Rule
Feb 1, 2016 Feb 29, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 29, 2016 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 13, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 13, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 13, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 13, 2015 Total Coliform Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Jul 19, 2012 Consumer Confidence Rule
May 1, 2012 May 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2012 Total Coliform Rule
Apr 1, 2012 Apr 30, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2012 Total Coliform Rule
Jan 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Mar 8, 2012 Lead and Copper Rule
Jan 1, 2009 Mar 31, 2009 Radium-228 MR No Yes — — — Resolved Mar 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Mar 31, 2009 Radium-228 MR No Yes — — — Resolved Mar 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Mar 31, 2009 Radium-228 MR No Yes — — — Resolved Mar 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Mar 31, 2009 Radium-228 MR No Yes — — — Resolved Mar 31, 2009 Radionuclides and Revised Rad Rule
Jul 1, 2001 Jul 31, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2001 Total Coliform Rule
Jul 1, 2001 Jul 31, 2001 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2001 Total Coliform Rule
Jan 1, 1995 Dec 31, 1995 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 1995 Radionuclides and Revised Rad Rule
Jan 1, 1994 Dec 31, 1994 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 1994 Radionuclides and Revised Rad Rule
Jan 1, 1994 Dec 31, 1994 Radium-228 MR No Yes — — — Resolved Dec 31, 1994 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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