MI0001250 · Michigan
CASSOPOLIS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 7
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 7
Counties listed by EPA · Cass County, Michigan
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 7 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 74 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 4000218 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start March 1, 2026 · period end March 31, 2026 · first reported May 29, 2026 · EPA return-to-compliance field March 31, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4000541 April 13, 2026 Resolving State Compliance achieved 4000539 April 17, 2026 Informal State Violation/Reminder Notice 4000540 April 17, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 4000217 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 1, 2026 · period end March 31, 2026 · first reported May 29, 2026 · EPA return-to-compliance field March 31, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4000541 April 13, 2026 Resolving State Compliance achieved 4000539 April 17, 2026 Informal State Violation/Reminder Notice 4000540 April 17, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 4000214 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 14, 2023 · first reported March 6, 2024 · EPA return-to-compliance field December 14, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4000533 December 14, 2023 Resolving State Compliance achieved 4000531 December 20, 2023 Informal State Violation/Reminder Notice 4000532 December 20, 2023 Informal State Public Notification requested 4000534 July 8, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 4000211 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 11, 2021 · period end November 19, 2021 · first reported March 2, 2022 · EPA return-to-compliance field November 19, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4000529 November 19, 2021 Resolving State Compliance achieved 4000527 November 30, 2021 Informal State Violation/Reminder Notice 4000528 November 30, 2021 Informal State Public Notification requested 4000530 November 15, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 4000209 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end September 30, 2021 · first reported December 1, 2021 · EPA return-to-compliance field September 30, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4000523 November 16, 2021 Informal State Violation/Reminder Notice 4000524 November 16, 2021 Informal State Public Notification requested 4000525 June 29, 2022 Informal State Public Notification received 4000526 September 27, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 4000208 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end September 30, 2021 · first reported December 1, 2021 · EPA return-to-compliance field September 30, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4000523 November 16, 2021 Informal State Violation/Reminder Notice 4000524 November 16, 2021 Informal State Public Notification requested 4000525 June 29, 2022 Informal State Public Notification received 4000526 September 27, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 4000215 · Combined Uranium · Radionuclides and Revised Rad RuleNoncompliance period start January 1, 2016 · period end September 30, 2024 · first reported December 19, 2024 · EPA return-to-compliance field September 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4000537 October 24, 2024 Resolving State Compliance achieved 4000535 October 28, 2024 Informal State Violation/Reminder Notice 4000536 October 28, 2024 Informal State Public Notification requested 4000538 June 26, 2025 Informal State Public Notification received
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility