WI6120246 · Wisconsin
MOUNT STERLING WATERWORKS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 12
- EPA health-based flag
- 4
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Counties listed by EPA · Crawford 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 10 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 151.5 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500065 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 1, 2025 · period end September 30, 2025 · first reported December 17, 2025 · EPA return-to-compliance field September 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600107 October 24, 2025 Informal State Violation/Reminder Notice 2600108 October 24, 2025 Informal State Public Notification requested 2600109 October 27, 2025 Informal State Public Notification received 2600110 October 27, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Public EducationViolation 2500062 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 11, 2024 · period end July 3, 2025 · first reported August 28, 2025 · EPA return-to-compliance field July 3, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500092 January 27, 2025 Informal State Public Notification requested 2500093 January 27, 2025 Informal State Violation/Reminder Notice 2500094 February 14, 2025 Informal State Public Notification received 2500102 July 3, 2025 Resolving State Compliance achieved Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2500066 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start October 17, 2024 · first reported December 17, 2025
No linked action row appears in the records shown.Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2500063 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start October 17, 2024 · first reported August 28, 2025
No linked action row appears in the records shown.EPA health-based flag · Resolved
LSL InventoryViolation 2500061 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end June 25, 2025 · first reported August 28, 2025 · EPA return-to-compliance field June 25, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9999900000000000001 June 18, 2025 Informal Federal Violation/Reminder Notice 2500100 June 25, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
LSL ReportingViolation 2500060 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end June 25, 2025 · first reported August 28, 2025 · EPA return-to-compliance field June 25, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9999900000000000001 June 18, 2025 Informal Federal Violation/Reminder Notice 2500099 June 25, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2400027 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 1, 2024 · period end July 31, 2024 · first reported August 28, 2025 · EPA return-to-compliance field July 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400071 August 26, 2024 Resolving State Compliance achieved 2400072 August 27, 2024 Informal State Violation/Reminder Notice 2400073 August 27, 2024 Informal State Public Notification requested 2400074 August 28, 2024 Informal State Public Notification received EPA health-based flag · Resolved
Treatment Technique No Certif. OperatorViolation 2400025 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start May 2, 2024 · period end May 22, 2024 · first reported August 28, 2025 · EPA return-to-compliance field May 22, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400069 May 14, 2024 Informal State Violation/Reminder Notice 2400070 May 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 2400024 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2024 · period end January 24, 2024 · first reported August 28, 2025 · EPA return-to-compliance field January 24, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400065 January 11, 2024 Informal State Violation/Reminder Notice 2400066 January 24, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Public EducationViolation 2400023 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2023 · period end January 30, 2024 · first reported August 28, 2025 · EPA return-to-compliance field January 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400061 December 22, 2023 Informal State Violation/Reminder Notice 2400062 December 22, 2023 Informal State Public Notification requested 2400067 January 30, 2024 Resolving State Compliance achieved 2400068 February 19, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Water Quality Parameter M/RViolation 2400022 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start June 1, 2023 · period end November 30, 2023 · first reported August 28, 2025 · EPA return-to-compliance field November 30, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400059 December 19, 2023 Informal State Public Notification requested 2400060 December 19, 2023 Informal State Violation/Reminder Notice 2400063 December 27, 2023 Resolving State Compliance achieved 2500087 June 24, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Water Quality Parameter M/RViolation 2400021 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start June 1, 2023 · period end November 30, 2023 · first reported August 28, 2025 · EPA return-to-compliance field November 30, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400057 December 19, 2023 Informal State Violation/Reminder Notice 2400058 December 19, 2023 Informal State Public Notification requested 2400064 December 27, 2023 Resolving State Compliance achieved 2500088 June 24, 2024 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