WI1220095 · Wisconsin
OAK PARK COMMUNITY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 18
- EPA health-based flag
- 2
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 10
Counties listed by EPA · Grant 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 18 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 2600363 · E. COLI · Ground Water RuleNoncompliance period start April 23, 2026 · period end April 30, 2026 · first reported September 1, 2026 · EPA return-to-compliance field April 30, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2600305 April 30, 2026 Informal State Violation/Reminder Notice 2600306 April 30, 2026 Informal State Public Notification requested 2600307 April 30, 2026 Resolving State Compliance achieved 2600308 May 3, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2500360 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2025 · period end January 31, 2025 · first reported August 28, 2025 · EPA return-to-compliance field January 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500293 February 10, 2025 Informal State Violation/Reminder Notice 2500294 February 10, 2025 Informal State Public Notification requested 2500295 February 19, 2025 Resolving State Compliance achieved 2600300 July 2, 2025 Informal State Public Notification received Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2500361 · 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 2500358 · 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 2500357 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end October 31, 2024 · first reported August 28, 2025 · EPA return-to-compliance field October 31, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500298 October 31, 2024 Resolving State Compliance achieved 9999900000000000001 June 18, 2025 Informal Federal Violation/Reminder Notice Monitoring or reporting · Resolved
LSL ReportingViolation 2500356 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end October 31, 2024 · first reported August 28, 2025 · EPA return-to-compliance field October 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2500289 October 31, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Reporting, Assessment Forms (RTCR)Violation 2400333 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 26, 2023 · period end December 14, 2023 · first reported August 28, 2025 · EPA return-to-compliance field December 14, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400277 December 14, 2023 Resolving State Compliance achieved 2400278 December 19, 2023 Informal State Violation/Reminder Notice 2400279 December 19, 2023 Informal State Public Notification requested 2400280 December 19, 2023 Informal State Public Notification received EPA health-based flag · Resolved
Treatment Technique, Level 1 Assessment (RTCR)Violation 2400332 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 26, 2023 · period end December 14, 2023 · first reported August 28, 2025 · EPA return-to-compliance field December 14, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400273 December 13, 2023 Informal State Violation/Reminder Notice 2400274 December 13, 2023 Informal State Public Notification requested 2400275 December 14, 2023 Resolving State Compliance achieved 2400276 December 14, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 2400331 · E. COLI · Ground Water RuleNoncompliance period start October 19, 2023 · period end October 24, 2023 · first reported August 28, 2025 · EPA return-to-compliance field October 24, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400269 October 24, 2023 Resolving State Compliance achieved 2400270 October 26, 2023 Informal State Violation/Reminder Notice 2400271 October 26, 2023 Informal State Public Notification requested 2400272 November 16, 2023 Informal State Public Notification received Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 2400334 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 1, 2022 · first reported August 28, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2400281 January 19, 2024 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2300329 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2022 · period end November 30, 2022 · first reported August 28, 2025 · EPA return-to-compliance field November 30, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2300265 December 6, 2022 Resolving State Compliance achieved 2300263 December 8, 2022 Informal State Violation/Reminder Notice 2300264 December 8, 2022 Informal State Public Notification requested Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 2200328 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end August 13, 2022 · first reported August 28, 2025 · EPA return-to-compliance field August 13, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2200260 August 8, 2022 Informal State Violation/Reminder Notice 2200262 August 13, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2200327 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end August 13, 2022 · first reported August 28, 2025 · EPA return-to-compliance field August 13, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2200259 August 8, 2022 Informal State Violation/Reminder Notice 2200261 August 13, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2300330 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 22, 2021 · period end April 24, 2023 · first reported March 1, 2023 · EPA return-to-compliance field April 24, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2300266 April 13, 2023 Informal State Violation/Reminder Notice 2300268 April 24, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 2200326 · E. COLI · Ground Water RuleNoncompliance period start December 22, 2021 · period end December 29, 2021 · first reported March 2, 2022 · EPA return-to-compliance field December 29, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2200256 December 29, 2021 Resolving State Compliance achieved 2200257 February 8, 2022 Informal State Violation/Reminder Notice 2200258 February 8, 2022 Informal State Public Notification requested 2300267 April 24, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 2200325 · E. COLI · Ground Water RuleNoncompliance period start October 24, 2021 · period end November 22, 2021 · first reported March 2, 2022 · EPA return-to-compliance field November 22, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2200252 October 29, 2021 Informal State Violation/Reminder Notice 2200253 October 29, 2021 Informal State Public Notification requested 2200254 November 22, 2021 Resolving State Compliance achieved 2200255 December 1, 2021 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2100320 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start May 1, 2021 · period end May 31, 2021 · first reported September 9, 2021 · EPA return-to-compliance field May 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100248 June 4, 2021 Informal State Violation/Reminder Notice 2100249 June 4, 2021 Informal State Public Notification requested 2100250 June 9, 2021 Resolving State Compliance achieved 2100251 July 1, 2021 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 2100319 · E. COLI · Ground Water RuleNoncompliance period start November 18, 2020 · period end November 23, 2020 · first reported March 3, 2021 · EPA return-to-compliance field November 23, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2100244 November 23, 2020 Resolving State Compliance achieved 2100245 November 27, 2020 Informal State Violation/Reminder Notice 2100246 November 27, 2020 Informal State Public Notification requested 2100247 December 1, 2020 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