IA5784326 · Iowa
TWIN KNOLLS FOURTH/FIFTH ADDITION
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 11
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Counties listed by EPA · Linn County, Iowa
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 7 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 51 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 260625 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start May 24, 2025 · first reported September 19, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770983 June 20, 2025 Informal State Violation/Reminder Notice 770984 June 20, 2025 Informal State Formal Notice of Violation issued 770985 June 20, 2025 Informal State Intentional no-action Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 167425 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2025 · period end January 31, 2025 · first reported June 26, 2025 · EPA return-to-compliance field January 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770978 February 20, 2025 Informal State Formal Notice of Violation issued 770979 February 20, 2025 Informal State Public Notification requested 770980 February 23, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 153125 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 1, 2024 · period end February 2, 2026 · first reported March 26, 2025 · EPA return-to-compliance field February 2, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770977 January 24, 2025 Informal State Formal Notice of Violation issued 770986 February 2, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 145223 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start May 13, 2023 · period end July 3, 2023 · first reported September 13, 2023 · EPA return-to-compliance field July 3, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770905 June 22, 2023 Informal State Violation/Reminder Notice 770906 June 22, 2023 Informal State Formal Notice of Violation issued 770904 July 3, 2023 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 44623 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start October 12, 2022 · period end June 30, 2022 · first reported March 17, 2023 · EPA return-to-compliance field June 30, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770911 June 30, 2022 Resolving State Compliance achieved 770895 November 17, 2022 Informal State Intentional no-action 770896 November 17, 2022 Informal State Formal Notice of Violation issued 770897 November 17, 2022 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 12423 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start August 1, 2022 · period end August 31, 2022 · first reported December 7, 2022 · EPA return-to-compliance field August 31, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770898 October 19, 2022 Informal State Formal Notice of Violation issued 770899 October 19, 2022 Informal State Public Notification requested 770907 July 3, 2023 Informal State Public Notification received 770912 August 31, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 12323 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start August 1, 2022 · period end August 31, 2022 · first reported December 7, 2022 · EPA return-to-compliance field August 31, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770900 October 19, 2022 Informal State Public Notification requested 770901 October 19, 2022 Informal State Formal Notice of Violation issued 770908 July 3, 2023 Informal State Public Notification received 770913 August 31, 2023 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 195822 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start July 13, 2022 · period end June 30, 2022 · first reported December 7, 2022 · EPA return-to-compliance field June 30, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770910 June 30, 2022 Resolving State Compliance achieved 770892 August 17, 2022 Informal State Violation/Reminder Notice 770893 August 17, 2022 Informal State Intentional no-action 770894 August 17, 2022 Informal State Formal Notice of Violation issued Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 202122 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end July 3, 2023 · first reported December 7, 2022 · EPA return-to-compliance field July 3, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770891 August 18, 2022 Informal State Formal Notice of Violation issued 770902 July 3, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 72822 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 1, 2021 · period end November 9, 2023 · first reported March 3, 2022 · EPA return-to-compliance field November 9, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770885 January 27, 2022 Informal State Formal Notice of Violation issued 770914 November 9, 2023 Resolving State Compliance achieved Monitoring or reporting · Unaddressed by formal action
Lead Consumer NoticeViolation 85219 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 1, 2018 · first reported March 21, 2019
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 770878 January 28, 2019 Informal State Formal Notice of Violation issued
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