WI4590455 · Wisconsin
MATTOON WATERWORKS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 5
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 3
Counties listed by EPA · Shawano County, Wisconsin
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 28 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2300054 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start July 16, 2023 · period end June 28, 2024 · first reported August 28, 2025 · EPA return-to-compliance field June 28, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400050 November 9, 2023 Informal State Violation/Reminder Notice 2400053 June 28, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Reporting, Assessment Forms (RTCR)Violation 2300053 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 16, 2023 · period end August 11, 2023 · first reported August 28, 2025 · EPA return-to-compliance field August 11, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400044 August 11, 2023 Resolving State Compliance achieved 2400046 November 9, 2023 Informal State Violation/Reminder Notice 2400047 November 9, 2023 Informal State Public Notification requested 2400052 June 28, 2024 Informal State Public Notification received EPA health-based flag · Resolved
Treatment Technique, Level 1 Assessment (RTCR)Violation 2300052 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 16, 2023 · period end August 11, 2023 · first reported August 28, 2025 · EPA return-to-compliance field August 11, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400045 August 11, 2023 Resolving State Compliance achieved 2400048 November 9, 2023 Informal State Violation/Reminder Notice 2400049 November 9, 2023 Informal State Public Notification requested 2400051 June 28, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2200050 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 1, 2022 · period end July 31, 2022 · first reported August 28, 2025 · EPA return-to-compliance field July 31, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2200040 August 31, 2022 Resolving State Compliance achieved 2200041 September 29, 2022 Informal State Violation/Reminder Notice 2200042 September 29, 2022 Informal State Public Notification requested 2300043 July 6, 2023 Informal State Public Notification received Monitoring or reporting · Unaddressed by formal action
Lead Consumer NoticeViolation 1200041 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2012 · first reported May 16, 2012
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1200019 February 29, 2012 Informal State Other 1300023 July 1, 2013 Informal State Public Notification received 2100039 October 3, 2014 Resolving State Compliance achieved 1800029 July 12, 2018 Informal State Other
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