WI8020375 · Wisconsin

BUTTERNUT WATERWORKS

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

Violation records shown: 31
EPA health-based flag: 8
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 15

Counties listed by EPA · Ashland 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 26 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 78.5 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action
Failure To Address DeficiencyViolation 2600087 · Groundwater Rule · Ground Water Rule
Noncompliance period start July 2, 2026 · first reported September 1, 2026
No linked action row appears in the records shown.
Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2600088 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 2, 2025 · first reported September 1, 2026
No linked action row appears in the records shown.
Monitoring or reporting · Unaddressed by formal action
Notification, Known or Potential LSLViolation 2600085 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start July 2, 2025 · first reported May 29, 2026
No linked action row appears in the records shown.

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 2500083 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2025 · period end September 24, 2025 · first reported December 17, 2025 · EPA return-to-compliance field September 24, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500131	August 5, 2025	Informal	State Violation/Reminder Notice
2500133	September 24, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 2500082 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2025 · period end September 24, 2025 · first reported December 17, 2025 · EPA return-to-compliance field September 24, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500130	August 5, 2025	Informal	State Violation/Reminder Notice
2500132	September 24, 2025	Resolving	State Compliance achieved

Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2500084 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 17, 2024 · first reported December 17, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
LSL ReportingViolation 2500077 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end October 22, 2024 · first reported August 28, 2025 · EPA return-to-compliance field October 22, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2500117 October 22, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500117	October 22, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2500076 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported August 28, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500115	October 8, 2024	Informal	State Public Notification requested
2500116	October 8, 2024	Informal	State Violation/Reminder Notice
2500128	August 4, 2025	Resolving	State Compliance achieved
2500134	September 24, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2500075 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported August 28, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2500115	October 8, 2024	Informal	State Public Notification requested
2500116	October 8, 2024	Informal	State Violation/Reminder Notice
2500128	August 4, 2025	Resolving	State Compliance achieved
2500134	September 24, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 2400038 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2024 · period end March 13, 2024 · first reported August 28, 2025 · EPA return-to-compliance field March 13, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400090	February 6, 2024	Informal	State Violation/Reminder Notice
2500118	March 13, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 2300034 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2023 · period end July 25, 2023 · first reported August 28, 2025 · EPA return-to-compliance field July 25, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2300082 July 11, 2023 Informal State Violation/Reminder Notice
2300085 July 25, 2023 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2300033 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2023 · period end July 25, 2023 · first reported August 28, 2025 · EPA return-to-compliance field July 25, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2300083 July 11, 2023 Informal State Violation/Reminder Notice
2300084 July 25, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300082	July 11, 2023	Informal	State Violation/Reminder Notice
2300085	July 25, 2023	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300083	July 11, 2023	Informal	State Violation/Reminder Notice
2300084	July 25, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 2300031 · Groundwater Rule · Ground Water Rule

Noncompliance period start April 2, 2023 · period end May 16, 2023 · first reported August 28, 2025 · EPA return-to-compliance field May 16, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300069	April 7, 2023	Informal	State Public Notification requested
2300074	April 10, 2023	Informal	State Public Notification received
2300076	May 16, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 2300030 · Groundwater Rule · Ground Water Rule

Noncompliance period start April 2, 2023 · period end May 16, 2023 · first reported August 28, 2025 · EPA return-to-compliance field May 16, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300064	April 7, 2023	Informal	State Public Notification requested
2300075	April 10, 2023	Informal	State Public Notification received
2300079	May 16, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 2300029 · Groundwater Rule · Ground Water Rule

Noncompliance period start April 2, 2023 · period end May 16, 2023 · first reported August 28, 2025 · EPA return-to-compliance field May 16, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300068	April 7, 2023	Informal	State Public Notification requested
2300073	April 10, 2023	Informal	State Public Notification received
2300077	May 16, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2400039 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start March 1, 2023 · period end June 12, 2024 · first reported August 28, 2025 · EPA return-to-compliance field June 12, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2400092 April 16, 2024 Informal State Violation/Reminder Notice
2500120 June 12, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400092	April 16, 2024	Informal	State Violation/Reminder Notice
2500120	June 12, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 2300027 · Groundwater Rule · Ground Water Rule

Noncompliance period start February 2, 2023 · period end May 16, 2023 · first reported August 28, 2025 · EPA return-to-compliance field May 16, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300065	April 7, 2023	Informal	State Public Notification requested
2300072	April 10, 2023	Informal	State Public Notification received
2300081	May 16, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 2300026 · Groundwater Rule · Ground Water Rule

Noncompliance period start February 2, 2023 · period end May 16, 2023 · first reported August 28, 2025 · EPA return-to-compliance field May 16, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300066	April 7, 2023	Informal	State Public Notification requested
2300070	April 10, 2023	Informal	State Public Notification received
2300080	May 16, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 2300025 · Groundwater Rule · Ground Water Rule

Noncompliance period start February 2, 2023 · period end May 16, 2023 · first reported August 28, 2025 · EPA return-to-compliance field May 16, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300067	April 7, 2023	Informal	State Public Notification requested
2300071	April 10, 2023	Informal	State Public Notification received
2300078	May 16, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2300028 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2023 · period end February 28, 2023 · first reported August 28, 2025 · EPA return-to-compliance field February 28, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2300061	March 6, 2023	Informal	State Violation/Reminder Notice
2300062	March 6, 2023	Informal	State Public Notification requested
2300063	March 23, 2023	Resolving	State Compliance achieved
2500119	June 12, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2400037 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported August 28, 2025 · EPA return-to-compliance field December 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400088	November 2, 2023	Informal	State Violation/Reminder Notice
2400089	November 2, 2023	Informal	State Public Notification requested
2400093	June 12, 2024	Informal	State Public Notification received
2500129	August 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2400036 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported August 28, 2025 · EPA return-to-compliance field December 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2400088	November 2, 2023	Informal	State Violation/Reminder Notice
2400089	November 2, 2023	Informal	State Public Notification requested
2400093	June 12, 2024	Informal	State Public Notification received
2500129	August 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2200023 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance 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
2200055	August 8, 2022	Informal	State Violation/Reminder Notice
2200056	August 8, 2022	Informal	State Public Notification requested
2200057	August 23, 2022	Resolving	State Compliance achieved
2300086	July 30, 2023	Informal	State Public Notification received

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 2200022 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 2, 2022 · period end January 14, 2022 · first reported May 25, 2022 · EPA return-to-compliance field January 14, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200046	January 6, 2022	Informal	State Violation/Reminder Notice
2200049	January 14, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2300024 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported March 1, 2023 · 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
2300059	November 16, 2022	Informal	State Violation/Reminder Notice
2300060	November 16, 2022	Informal	State Public Notification requested
2300087	July 20, 2023	Informal	State Public Notification received
2400091	February 6, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2200021 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 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
2200047	January 13, 2022	Informal	State Violation/Reminder Notice
2200048	January 13, 2022	Informal	State Public Notification requested
2200051	January 18, 2022	Resolving	State Compliance achieved
2200054	July 1, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2200020 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2021 · period end November 30, 2021 · first reported March 2, 2022 · EPA return-to-compliance field November 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2200044	December 8, 2021	Informal	State Violation/Reminder Notice
2200045	December 8, 2021	Informal	State Public Notification requested
2200050	January 18, 2022	Resolving	State Compliance achieved
2200053	July 1, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2200019 · 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
2200042	October 18, 2021	Informal	State Violation/Reminder Notice
2200043	October 18, 2021	Informal	State Public Notification requested
2200052	July 1, 2022	Informal	State Public Notification received
2200058	August 29, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2200018 · 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
2200042	October 18, 2021	Informal	State Violation/Reminder Notice
2200043	October 18, 2021	Informal	State Public Notification requested
2200052	July 1, 2022	Informal	State Public Notification received
2200058	August 29, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 2100017 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2020 · period end November 30, 2020 · first reported March 3, 2021 · EPA return-to-compliance field November 30, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2100040	December 7, 2020	Resolving	State Compliance achieved
2100037	January 14, 2021	Informal	State Violation/Reminder Notice
2100038	January 14, 2021	Informal	State Public Notification requested
2200041	July 6, 2021	Informal	State Public Notification received

Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 1400006 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 1, 2012 · first reported February 19, 2014

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1400015 October 9, 2012 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1400015	October 9, 2012	Informal	State Violation/Reminder Notice

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