WI6100337 · Wisconsin

THORP WATERWORKS

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

Violation records shown: 14
EPA health-based flag: 2
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 11

Counties listed by EPA · Clark 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 14 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 181 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2500294 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start December 11, 2024 · period end May 7, 2025 · first reported August 28, 2025 · EPA return-to-compliance field May 7, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500141 May 7, 2025 Resolving State Compliance achieved
2500153 June 26, 2025 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500141	May 7, 2025	Resolving	State Compliance achieved
2500153	June 26, 2025	Informal	State Violation/Reminder Notice

EPA health-based flag · Resolved

Public EducationViolation 2500292 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start December 11, 2024 · period end February 7, 2025 · first reported August 28, 2025 · EPA return-to-compliance field February 7, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500084	February 7, 2025	Resolving	State Compliance achieved
2500140	May 7, 2025	Informal	State Public Notification received
2500151	June 26, 2025	Informal	State Violation/Reminder Notice
2500152	June 26, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Water Quality Parameter M/RViolation 2400263 · Lead and Copper Rule · Lead and Copper Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400065	August 27, 2024	Informal	State Violation/Reminder Notice
2400066	August 27, 2024	Informal	State Public Notification requested
2500139	November 19, 2024	Resolving	State Compliance achieved
2500145	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Initial, Follow-up, or Routine Source Water M/RViolation 2400262 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2024 · period end November 7, 2024 · first reported August 28, 2025 · EPA return-to-compliance field November 7, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400069	August 27, 2024	Informal	State Violation/Reminder Notice
2400070	August 27, 2024	Informal	State Public Notification requested
2500132	November 7, 2024	Resolving	State Compliance achieved
2500144	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Water Quality Parameter M/RViolation 2400261 · Lead and Copper Rule · Lead and Copper Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400081	August 27, 2024	Informal	State Public Notification requested
2400082	August 27, 2024	Informal	State Violation/Reminder Notice
2500135	November 19, 2024	Resolving	State Compliance achieved
2500143	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Initial, Follow-up, or Routine Source Water M/RViolation 2400260 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2024 · period end November 7, 2024 · first reported August 28, 2025 · EPA return-to-compliance field November 7, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400067	August 27, 2024	Informal	State Violation/Reminder Notice
2400068	August 27, 2024	Informal	State Public Notification requested
2500134	November 7, 2024	Resolving	State Compliance achieved
2500142	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Initial, Follow-up, or Routine Source Water M/RViolation 2400259 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2024 · period end November 7, 2024 · first reported August 28, 2025 · EPA return-to-compliance field November 7, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400071	August 27, 2024	Informal	State Public Notification requested
2400075	August 27, 2024	Informal	State Violation/Reminder Notice
2500131	November 7, 2024	Resolving	State Compliance achieved
2500146	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Water Quality Parameter M/RViolation 2400258 · Lead and Copper Rule · Lead and Copper Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400072	August 27, 2024	Informal	State Public Notification requested
2400076	August 27, 2024	Informal	State Violation/Reminder Notice
2500136	November 19, 2024	Resolving	State Compliance achieved
2500149	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Water Quality Parameter M/RViolation 2400257 · Lead and Copper Rule · Lead and Copper Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400074	August 27, 2024	Informal	State Public Notification requested
2400080	August 27, 2024	Informal	State Violation/Reminder Notice
2500138	November 19, 2024	Resolving	State Compliance achieved
2500150	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Initial, Follow-up, or Routine Source Water M/RViolation 2400256 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2024 · period end November 7, 2024 · first reported August 28, 2025 · EPA return-to-compliance field November 7, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400078	August 27, 2024	Informal	State Violation/Reminder Notice
2400079	August 27, 2024	Informal	State Public Notification requested
2500133	November 7, 2024	Resolving	State Compliance achieved
2500147	May 7, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Water Quality Parameter M/RViolation 2400255 · Lead and Copper Rule · Lead and Copper Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400073	August 27, 2024	Informal	State Public Notification requested
2400077	August 27, 2024	Informal	State Violation/Reminder Notice
2500137	November 19, 2024	Resolving	State Compliance achieved
2500148	May 7, 2025	Informal	State Public Notification received

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 2300253 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start November 2, 2022 · period end November 2, 2022 · first reported August 28, 2025 · EPA return-to-compliance field November 2, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300063	November 2, 2022	Resolving	State Compliance achieved
2300064	November 4, 2022	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2200248 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2021 · period end December 31, 2021 · first reported March 2, 2022 · EPA return-to-compliance field December 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200059	August 10, 2021	Informal	State Violation/Reminder Notice
2200060	August 10, 2021	Informal	State Public Notification requested
2200061	June 27, 2022	Informal	State Public Notification received
2200062	July 13, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2200247 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2021 · period end December 31, 2021 · first reported March 2, 2022 · EPA return-to-compliance field December 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200059	August 10, 2021	Informal	State Violation/Reminder Notice
2200060	August 10, 2021	Informal	State Public Notification requested
2200061	June 27, 2022	Informal	State Public Notification received
2200062	July 13, 2022	Resolving	State 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.

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