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IA1558055 · Iowa

MASSENA WATER SUPPLY

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown
12
EPA health-based flag
2
Health-based records unresolved in this snapshot
0
Monitoring and reporting records
6

Counties listed by EPA · Cass County, Iowa

Open the EPA system record

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 9 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.

  1. Other or unclassified · Unaddressed by formal action

    Public Notification Violation for NPDWR ViolationViolation 220025 · Public Notice · Public Notice Rule and Revised PN Rule

    Noncompliance period start March 13, 2025 · first reported September 19, 2025

    3 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319881June 25, 2025InformalState Formal Notice of Violation issued
    319882June 25, 2025InformalState Violation/Reminder Notice
    319883June 25, 2025InformalState Intentional no-action

  2. Other or unclassified · Unaddressed by formal action

    Public Notification Violation for NPDWR ViolationViolation 219925 · Public Notice · Public Notice Rule and Revised PN Rule

    Noncompliance period start March 13, 2025 · first reported September 19, 2025

    3 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319878June 25, 2025InformalState Violation/Reminder Notice
    319879June 25, 2025InformalState Formal Notice of Violation issued
    319880June 25, 2025InformalState Intentional no-action

  3. Monitoring or reporting · Resolved

    Monitoring, Routine (RTCR)Violation 66125 · Revised Total Coliform Rule · Revised Total Coliform Rule

    Noncompliance period start October 1, 2024 · period end October 31, 2024 · first reported March 26, 2025 · EPA return-to-compliance field October 31, 2024

    3 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319868November 25, 2024ResolvingState Compliance achieved
    319854December 9, 2024InformalState Public Notification requested
    319855December 9, 2024InformalState Formal Notice of Violation issued

  4. Monitoring or reporting · Resolved

    Monitoring, Routine (RTCR)Violation 38325 · Revised Total Coliform Rule · Revised Total Coliform Rule

    Noncompliance period start September 1, 2024 · period end September 30, 2024 · first reported December 19, 2024 · EPA return-to-compliance field September 30, 2024

    5 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319866November 25, 2024ResolvingState Compliance achieved
    319852December 9, 2024InformalState Public Notification requested
    319853December 9, 2024InformalState Formal Notice of Violation issued
    319865December 9, 2024InformalState Public Notification requested
    319867December 9, 2024InformalState Formal Notice of Violation issued

  5. Monitoring or reporting · Resolved

    Monitoring, Source Water (GWR)Violation 292824 · E. COLI · Ground Water Rule

    Noncompliance period start August 27, 2024 · period end August 27, 2024 · first reported December 19, 2024 · EPA return-to-compliance field August 27, 2024

    4 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319872March 11, 2024InformalState Public Notification received
    319864August 27, 2024ResolvingState Compliance achieved
    319846September 26, 2024InformalState Public Notification requested
    319847September 26, 2024InformalState Formal Notice of Violation issued

  6. Monitoring or reporting · Resolved

    Monitoring and Reporting (DBP)Violation 287924 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported December 19, 2024 · EPA return-to-compliance field July 31, 2024

    5 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319873March 11, 2024InformalState Public Notification received
    319848September 26, 2024InformalState Public Notification requested
    319849September 26, 2024InformalState Formal Notice of Violation issued
    319875March 11, 2025InformalState Public Notification received
    319876July 22, 2025ResolvingState Compliance achieved

  7. Monitoring or reporting · Resolved

    Monitoring and Reporting (DBP)Violation 287824 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported December 19, 2024 · EPA return-to-compliance field July 31, 2024

    4 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319850September 26, 2024InformalState Public Notification requested
    319851September 26, 2024InformalState Formal Notice of Violation issued
    319874March 11, 2025InformalState Public Notification received
    319877July 22, 2025ResolvingState Compliance achieved

  8. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 139524 · Arsenic · Arsenic Rule

    Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 13, 2024 · EPA return-to-compliance field March 31, 2024

    3 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319858May 28, 2024ResolvingState Compliance achieved
    319842June 4, 2024InformalState Public Notification requested
    319843June 4, 2024InformalState Formal Notice of Violation issued

  9. Other or unclassified · Resolved

    Public Notification Violation for NPDWR ViolationViolation 60624 · Public Notice · Public Notice Rule and Revised PN Rule

    Noncompliance period start November 7, 2023 · period end June 30, 2024 · first reported March 12, 2024 · EPA return-to-compliance field June 30, 2024

    4 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319839December 18, 2023InformalState Violation/Reminder Notice
    319840December 18, 2023InformalState Formal Notice of Violation issued
    319841December 18, 2023InformalState Intentional no-action
    319863June 30, 2024ResolvingState Compliance achieved

  10. Other or unclassified · Unaddressed by formal action

    Public Notification Violation for NPDWR ViolationViolation 52024 · Public Notice · Public Notice Rule and Revised PN Rule

    Noncompliance period start October 6, 2023 · first reported June 26, 2025

    4 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319860December 18, 2023InformalState Formal Notice of Violation issued
    319861December 18, 2023InformalState Violation/Reminder Notice
    319862December 18, 2023InformalState Intentional no-action
    319871March 11, 2024InformalState Public Notification received

  11. EPA health-based flag · Resolved

    Maximum Contaminant Level Violation, Single SampleViolation 1524 · Arsenic · Arsenic Rule

    Noncompliance period start September 1, 2023 · period end September 30, 2023 · first reported November 16, 2023 · EPA return-to-compliance field September 30, 2023

    4 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319837October 4, 2023InformalState Public Notification requested
    319838October 4, 2023InformalState Formal Notice of Violation issued
    319857June 30, 2024InformalState Public Notification issued
    319856December 18, 2024ResolvingState Compliance achieved

  12. EPA health-based flag · Resolved

    Treatment Technique (SWTR and GWR)Violation 127722 · Groundwater Rule · Ground Water Rule

    Noncompliance period start May 1, 2022 · period end May 31, 2022 · first reported September 8, 2022 · EPA return-to-compliance field May 31, 2022

    6 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    319831May 19, 2022InformalState Public Notification requested
    319832May 19, 2022InformalState Formal Notice of Violation issued
    319833May 19, 2022InformalState Public Notification requested
    319834May 19, 2022InformalState Formal Notice of Violation issued
    319835June 6, 2022InformalState Public Notification received
    319836July 15, 2022ResolvingState Compliance achieved

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.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility