CASSOPOLIS

Michigan — Community Water System — PWSID: MI0001250

System Information

PWSIDMI0001250
System NameCASSOPOLIS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 3, 1981
Last ReportedDec 18, 2025

Location & Contact

StateMichigan
CityCASSOPOLIS
ZIP Code49031
Address121 N DISBROW ST
OrganizationLAGROW, EMILIE
Phone269-445-8648

Population & Service

Population Served1,815
Service Connections842

Drinking Water Violations (32)

This water system has 32 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 Dec 31, 2023 Chlorine MR No Yes 4.0 mg/L Resolved Dec 14, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes 4.0 mg/L Resolved Dec 14, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes 4.0 mg/L Resolved Dec 14, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes 4.0 mg/L Resolved Dec 14, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 11, 2021 Revised Total Coliform Rule RPT No No Resolved Nov 19, 2021 Revised Total Coliform Rule
Oct 11, 2021 Revised Total Coliform Rule RPT No No Resolved Nov 19, 2021 Revised Total Coliform Rule
Oct 11, 2021 Revised Total Coliform Rule RPT No No Resolved Nov 19, 2021 Revised Total Coliform Rule
Oct 11, 2021 Revised Total Coliform Rule RPT No No Resolved Nov 19, 2021 Revised Total Coliform Rule
Oct 1, 2020 Sep 30, 2021 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Sep 30, 2021 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Sep 30, 2021 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Sep 30, 2021 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Sep 30, 2021 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Sep 30, 2021 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Sep 30, 2021 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Sep 30, 2021 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2017 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2017 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2017 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2017 Sep 30, 2018 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2017 Sep 30, 2018 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2017 Sep 30, 2018 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016 Sep 30, 2024 Combined Uranium MR No Yes 30 ug/L Resolved Sep 30, 2024 Radionuclides and Revised Rad Rule
Jan 1, 2016 Sep 30, 2024 Combined Uranium MR No Yes 30 ug/L Resolved Sep 30, 2024 Radionuclides and Revised Rad Rule
Jan 1, 2016 Sep 30, 2024 Combined Uranium MR No Yes 30 ug/L Resolved Sep 30, 2024 Radionuclides and Revised Rad Rule
Jan 1, 2016 Sep 30, 2024 Combined Uranium MR No Yes 30 ug/L Resolved Sep 30, 2024 Radionuclides and Revised Rad Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No 5% of samples Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No 5% of samples Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No 5% of samples Resolved Aug 31, 2013 Total Coliform Rule
Jul 1, 2013 Sep 30, 2013 Chlorine MR No Yes 4.0 mg/L Resolved Sep 23, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
No No
No No

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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