WI1280107 · Wisconsin

JOHNSON CREEK WATERWORKS

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

Violation records shown: 16
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 5

Counties listed by EPA · Jefferson 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 15 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 2600088 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 1, 2024 · period end January 28, 2026 · first reported March 2, 2026 · EPA return-to-compliance field January 28, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2600126	January 22, 2026	Informal	State Violation/Reminder Notice
2600128	January 28, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2500085 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2024 · period end November 30, 2024 · first reported August 28, 2025 · EPA return-to-compliance field November 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500101	December 5, 2024	Informal	State Violation/Reminder Notice
2500102	December 5, 2024	Informal	State Public Notification requested
2500103	December 12, 2024	Resolving	State Compliance achieved
2600127	January 28, 2026	Informal	State Public Notification received

Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2500086 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance 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 2500084 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end June 10, 2025 · first reported August 28, 2025 · EPA return-to-compliance field June 10, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500106 June 10, 2025 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500106	June 10, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 2400062 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2024 · period end August 21, 2024 · first reported August 28, 2025 · EPA return-to-compliance field August 21, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400078	August 12, 2024	Informal	State Violation/Reminder Notice
2400080	August 21, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 2400061 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2024 · period end August 21, 2024 · first reported August 28, 2025 · EPA return-to-compliance field August 21, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400077	August 12, 2024	Informal	State Violation/Reminder Notice
2400079	August 21, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2300057 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 1, 2026 · EPA return-to-compliance field December 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300062	January 10, 2023	Informal	State Violation/Reminder Notice
2300063	January 10, 2023	Informal	State Public Notification requested
2400073	January 20, 2023	Informal	State Public Notification received
2400075	February 21, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2200055 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported August 28, 2025 · EPA return-to-compliance field September 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300064	January 10, 2023	Informal	State Violation/Reminder Notice
2300065	January 10, 2023	Informal	State Public Notification requested
2400072	January 20, 2023	Informal	State Public Notification received
2400074	February 21, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2200048 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported May 25, 2022 · EPA return-to-compliance field March 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300066	January 10, 2023	Informal	State Violation/Reminder Notice
2300067	January 10, 2023	Informal	State Public Notification requested
2400071	January 20, 2023	Informal	State Public Notification received
2400076	May 23, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 2100042 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2021 · period end July 12, 2021 · first reported December 2, 2021 · EPA return-to-compliance field July 12, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2100052 July 12, 2021 Resolving State Compliance achieved
2100054 August 2, 2021 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2100041 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2021 · period end July 12, 2021 · first reported December 2, 2021 · EPA return-to-compliance field July 12, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2100051 July 12, 2021 Resolving State Compliance achieved
2100053 August 2, 2021 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2100052	July 12, 2021	Resolving	State Compliance achieved
2100054	August 2, 2021	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2100051	July 12, 2021	Resolving	State Compliance achieved
2100053	August 2, 2021	Informal	State Violation/Reminder Notice

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 2100046 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start November 1, 2020 · period end August 4, 2025 · first reported March 2, 2022 · EPA return-to-compliance field August 4, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300058	November 21, 2022	Informal	State Violation/Reminder Notice
2500122	August 4, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 2100045 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start November 1, 2020 · period end August 4, 2025 · first reported March 2, 2022 · EPA return-to-compliance field August 4, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300061	November 21, 2022	Informal	State Violation/Reminder Notice
2500121	August 4, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 2100044 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start November 1, 2020 · period end August 4, 2025 · first reported March 2, 2022 · EPA return-to-compliance field August 4, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300059	November 21, 2022	Informal	State Violation/Reminder Notice
2500120	August 4, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 2100043 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start November 1, 2020 · period end August 4, 2025 · first reported March 2, 2022 · EPA return-to-compliance field August 4, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300060	November 21, 2022	Informal	State Violation/Reminder Notice
2500119	August 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 2000037 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2020 · period end September 9, 2021 · first reported November 25, 2020 · EPA return-to-compliance field September 9, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2100043	January 22, 2021	Informal	State Violation/Reminder Notice
2100044	January 22, 2021	Informal	State Public Notification requested
2300068	September 9, 2021	Resolving	State Compliance achieved
2500116	August 4, 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