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POTOSI WATERWORKS

Wisconsin — Community Water System — PWSID: WI1220117

System Information

PWSIDWI1220117
System NamePOTOSI WATERWORKS
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
CityPOTOSI
ZIP Code53820-0045
Address105 N MAIN ST
OrganizationGAVINSKI, JESSIE - CLERK
Phone—

Population & Service

Population Served718
Service Connections265

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
Mar 1, 2024 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Mar 19, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2024 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved Mar 19, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jan 8, 2024 Lead and Copper Rule
Jan 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jan 8, 2024 Lead and Copper Rule
May 2, 2018 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved May 18, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 2, 2018 — Stage 1 Disinfectants and Disinfection Byproducts Rule TT Yes No — — — Resolved May 18, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2018 Mar 31, 2018 Revised Total Coliform Rule MON No No — — — Resolved Mar 31, 2018 Revised Total Coliform Rule
Mar 1, 2018 Mar 31, 2018 Revised Total Coliform Rule MON No No — — — Resolved Mar 31, 2018 Revised Total Coliform Rule
Mar 1, 2018 Mar 31, 2018 Revised Total Coliform Rule MON No No — — — Resolved Mar 31, 2018 Revised Total Coliform Rule
Mar 1, 2018 Mar 31, 2018 Revised Total Coliform Rule MON No No — — — Resolved Mar 31, 2018 Revised Total Coliform Rule
Jan 1, 2018 Mar 31, 2018 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2015 — Lead and Copper Rule MR No No — TT — Resolved Jan 26, 2015 Lead and Copper Rule
Jan 1, 2015 — Lead and Copper Rule MR No No — TT — Resolved Jan 26, 2015 Lead and Copper Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Aug 14, 2013 Consumer Confidence Rule
Jan 1, 2013 Dec 31, 2015 TTHM MR No No — 0.080 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 TTHM MR No No — 0.080 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 TTHM MR No No — 0.080 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 TTHM MR No No — 0.080 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 TTHM MR No No — 0.080 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2015 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Sep 25, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Jan 26, 2015 Lead and Copper Rule
May 1, 1996 May 31, 1996 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 1996 Total Coliform Rule
Jan 1, 1996 Jan 31, 1996 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 1996 Total Coliform Rule
Jan 1, 1996 Jan 31, 1996 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 1996 Total Coliform Rule
Jan 1, 1996 Jan 31, 1996 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 1996 Total Coliform Rule
Jan 1, 1994 Dec 31, 1994 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 1994 Volatile Organic Chemicals
Jan 1, 1994 Dec 31, 1994 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 1994 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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