KNAPP WATERWORKS

Wisconsin — Community Water System — PWSID: WI6170267

System Information

PWSIDWI6170267
System NameKNAPP WATERWORKS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedJan 28, 1981
Last ReportedMar 2, 2026

Location & Contact

StateWisconsin
CityKnapp
ZIP Code54749
Address111 Oak Street
OrganizationKNAPP VILLAGE CLERK
Phone

Population & Service

Population Served486
Service Connections229

Drinking Water Violations (83)

This water system has 83 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
Sep 2, 2025 TT Yes No Resolved Dec 3, 2025
Sep 2, 2025 TT Yes No Resolved Dec 3, 2025
Apr 1, 2024 Apr 30, 2024 MON No No Resolved Apr 30, 2024
Apr 1, 2024 Apr 30, 2024 MON No No Resolved Apr 30, 2024
Apr 1, 2024 Apr 30, 2024 MON No No Resolved Apr 30, 2024
Apr 1, 2024 Apr 30, 2024 MON No No Resolved Apr 30, 2024
Aug 1, 2023 Aug 31, 2023 MON No No Resolved Aug 31, 2023
Aug 1, 2023 Aug 31, 2023 MON No No Resolved Aug 31, 2023
Aug 1, 2023 Aug 31, 2023 MON No No Resolved Aug 31, 2023
Aug 1, 2023 Aug 31, 2023 MON No No Resolved Aug 31, 2023
Feb 1, 2023 Feb 28, 2023 MON No No Resolved Feb 28, 2023
Feb 1, 2023 Feb 28, 2023 MON No No Resolved Feb 28, 2023
Feb 1, 2023 Feb 28, 2023 MON No No Resolved Feb 28, 2023
Feb 1, 2023 Feb 28, 2023 MON No No Resolved Feb 28, 2023
Sep 9, 2022 MR No Yes Resolved Sep 15, 2022
Sep 9, 2022 MR No Yes Resolved Sep 15, 2022
Sep 9, 2022 MR No Yes Resolved Sep 15, 2022
Sep 9, 2022 MR No Yes Resolved Sep 15, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.060 mg/L Resolved Dec 31, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.060 mg/L Resolved Dec 31, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.060 mg/L Resolved Dec 31, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.060 mg/L Resolved Dec 31, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.080 mg/L Resolved Dec 31, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.080 mg/L Resolved Dec 31, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.080 mg/L Resolved Dec 31, 2022
Jan 1, 2020 Dec 31, 2022 MR No No 0.080 mg/L Resolved Dec 31, 2022
Jan 1, 2018 Mar 31, 2018 MR No Yes 4.0 mg/L Resolved Mar 31, 2018
Jan 1, 2018 Mar 31, 2018 MR No Yes 4.0 mg/L Resolved Mar 31, 2018
Jan 1, 2018 Mar 31, 2018 MR No Yes 4.0 mg/L Resolved Mar 31, 2018
Jan 1, 2018 Mar 31, 2018 MR No Yes 4.0 mg/L Resolved Mar 31, 2018
Apr 1, 2017 Jun 30, 2017 MR No Yes 4.0 mg/L Resolved Jun 30, 2017
Apr 1, 2017 Jun 30, 2017 MR No Yes 4.0 mg/L Resolved Jun 30, 2017
Apr 1, 2017 Jun 30, 2017 MR No Yes 4.0 mg/L Resolved Jun 30, 2017
Apr 1, 2017 Jun 30, 2017 MR No Yes 4.0 mg/L Resolved Jun 30, 2017
Apr 1, 2017 Jun 30, 2017 MR No Yes 4.0 mg/L Resolved Jun 30, 2017
Jan 1, 2017 MR No No TT Resolved Jul 13, 2017
Jan 1, 2017 MR No No TT Resolved Jul 13, 2017
Jun 1, 2016 MR No No TT Resolved Aug 7, 2017
Jun 1, 2016 MR No No TT Resolved Aug 7, 2017
Jun 1, 2016 MR No No TT Resolved Aug 7, 2017
Jun 1, 2016 MR No No TT Resolved Aug 7, 2017
Oct 1, 2013 Oct 31, 2013 MR No No 5% of samples Resolved Oct 31, 2013
Oct 1, 2013 Oct 31, 2013 MR No No 5% of samples Resolved Oct 31, 2013
Oct 1, 2013 Oct 31, 2013 MR No No 5% of samples Resolved Oct 31, 2013
Oct 1, 2013 Dec 31, 2013 MR No Yes 4.0 mg/L Resolved Nov 6, 2013
Oct 1, 2013 Oct 31, 2013 MR No No 5% of samples Resolved Oct 31, 2013
Oct 1, 2013 Dec 31, 2013 MR No Yes 4.0 mg/L Resolved Nov 6, 2013
Oct 1, 2013 Dec 31, 2013 MR No Yes 4.0 mg/L Resolved Nov 6, 2013
Oct 1, 2013 Dec 31, 2013 MR No Yes 4.0 mg/L Resolved Nov 6, 2013
May 1, 2012 May 31, 2012 MR No No 5% of samples Resolved May 31, 2012

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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