IL1675150 · Illinois
MECHANICSBURG-BUFFALO WATER COMMISSION
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 22
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 17
Counties listed by EPA · Sangamon County, Illinois
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 17 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.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 7073907 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 30, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269652 June 15, 2026 Informal State Violation/Reminder Notice 6269653 June 15, 2026 Informal State Public Notification requested Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 7073904 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start January 15, 2026 · first reported May 27, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269648 February 13, 2026 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073906 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2026 · period end March 31, 2026 · first reported May 27, 2026 · EPA return-to-compliance field March 31, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269649 April 17, 2026 Informal State Violation/Reminder Notice 6269650 April 17, 2026 Informal State Public Notification requested 6269657 June 12, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073905 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2026 · period end March 31, 2026 · first reported May 27, 2026 · EPA return-to-compliance field March 31, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269649 April 17, 2026 Informal State Violation/Reminder Notice 6269650 April 17, 2026 Informal State Public Notification requested 6269657 June 12, 2026 Resolving State Compliance achieved Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 7073901 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2025 · first reported February 26, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269643 October 21, 2025 Informal State Violation/Reminder Notice 6269644 October 21, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, RegularViolation 7073902 · Di(2-ethylhexyl) phthalate · Synthetic Organic ChemicalsNoncompliance period start July 1, 2025 · period end September 30, 2025 · first reported February 26, 2026 · EPA return-to-compliance field September 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269646 December 17, 2025 Informal State Violation/Reminder Notice 6269647 December 17, 2025 Informal State Public Notification requested 6269651 April 7, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 7073900 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end December 4, 2025 · first reported November 21, 2025 · EPA return-to-compliance field December 4, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269642 July 30, 2025 Informal State Violation/Reminder Notice 6269645 December 4, 2025 Resolving State Compliance achieved Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 7073899 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start April 12, 2025 · first reported August 18, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269641 May 15, 2025 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073898 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 27, 2025 · EPA return-to-compliance field December 31, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269638 January 14, 2025 Informal State Violation/Reminder Notice 6269639 January 14, 2025 Informal State Public Notification requested 6269640 March 4, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073897 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 27, 2025 · EPA return-to-compliance field December 31, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269638 January 14, 2025 Informal State Violation/Reminder Notice 6269639 January 14, 2025 Informal State Public Notification requested 6269640 March 4, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 7073896 · Di(2-ethylhexyl) phthalate · Synthetic Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported May 21, 2024 · EPA return-to-compliance field March 31, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269625 April 11, 2024 Informal State Violation/Reminder Notice 6269626 April 11, 2024 Informal State Public Notification requested 6269628 June 7, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073895 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · 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 6269619 January 12, 2024 Informal State Violation/Reminder Notice 6269620 January 12, 2024 Informal State Public Notification requested 6269627 March 4, 2024 Resolving State Compliance achieved 6269635 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073894 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · 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 6269619 January 12, 2024 Informal State Violation/Reminder Notice 6269620 January 12, 2024 Informal State Public Notification requested 6269627 March 4, 2024 Resolving State Compliance achieved 6269635 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 7073892 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2023 · period end August 31, 2023 · first reported November 28, 2023 · EPA return-to-compliance field August 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269624 September 21, 2023 Resolving State Compliance achieved 6269613 October 16, 2023 Informal State Violation/Reminder Notice 6269614 October 16, 2023 Informal State Public Notification requested 6269633 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073893 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 21, 2023 · first reported November 28, 2023 · EPA return-to-compliance field September 21, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269621 September 21, 2023 Resolving State Compliance achieved 6269615 October 16, 2023 Informal State Violation/Reminder Notice 6269616 October 16, 2023 Informal State Public Notification requested 6269634 July 10, 2024 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 7073887 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end July 10, 2024 · first reported November 28, 2023 · EPA return-to-compliance field July 10, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269606 July 24, 2023 Informal State Violation/Reminder Notice 6269637 July 10, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 7073888 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 1, 2023 · period end June 30, 2023 · first reported August 29, 2023 · EPA return-to-compliance field June 30, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269622 August 2, 2023 Resolving State Compliance achieved 6269607 August 15, 2023 Informal State Violation/Reminder Notice 6269608 August 15, 2023 Informal State Public Notification requested 6269631 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073886 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 8, 2023 · first reported August 29, 2023 · EPA return-to-compliance field June 8, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269617 June 8, 2023 Resolving State Compliance achieved 6269604 July 20, 2023 Informal State Violation/Reminder Notice 6269605 July 20, 2023 Informal State Public Notification requested 6269630 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 7073885 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start April 1, 2023 · period end April 30, 2023 · first reported August 29, 2023 · EPA return-to-compliance field April 30, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269623 June 8, 2023 Resolving State Compliance achieved 6269602 July 20, 2023 Informal State Violation/Reminder Notice 6269603 July 20, 2023 Informal State Public Notification requested 6269629 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073891 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported November 28, 2023 · 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 6269611 October 11, 2023 Informal State Violation/Reminder Notice 6269612 October 11, 2023 Informal State Public Notification requested 6269627 March 4, 2024 Resolving State Compliance achieved 6269636 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7073890 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported November 28, 2023 · 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 6269611 October 11, 2023 Informal State Violation/Reminder Notice 6269612 October 11, 2023 Informal State Public Notification requested 6269627 March 4, 2024 Resolving State Compliance achieved 6269636 July 10, 2024 Informal State Public Notification received Monitoring or reporting · Unaddressed by formal action
Lead Consumer NoticeViolation 7073884 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 30, 2022 · first reported February 28, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6269600 January 24, 2023 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