AZ0403702 · Arizona

GRAND CANYON NATIONAL PARK

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

Violation records shown: 47
EPA health-based flag: 6
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 36

Counties listed by EPA · Coconino County, Arizona

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 47 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 20732 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start November 19, 2025 · period end January 29, 2026 · first reported February 13, 2026 · EPA return-to-compliance field January 29, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8490 December 30, 2025 Informal State Violation/Reminder Notice
8494 January 29, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 20731 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start September 2, 2025 · period end January 29, 2026 · first reported November 17, 2025 · EPA return-to-compliance field January 29, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8487 October 24, 2025 Informal State Violation/Reminder Notice
8492 January 29, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 20730 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2025 · period end July 3, 2025 · first reported November 17, 2025 · EPA return-to-compliance field July 3, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8485 July 3, 2025 Resolving State Compliance achieved
8484 October 16, 2025 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8490	December 30, 2025	Informal	State Violation/Reminder Notice
8494	January 29, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8487	October 24, 2025	Informal	State Violation/Reminder Notice
8492	January 29, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8485	July 3, 2025	Resolving	State Compliance achieved
8484	October 16, 2025	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20729 · Styrene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20728 · Ethylbenzene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20727 · Toluene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20726 · Benzene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20725 · CHLOROBENZENE · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20724 · Tetrachloroethylene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20723 · 1,1,2-Trichloroethane · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20722 · Trichloroethylene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20721 · 1,2-Dichloropropane · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20720 · Carbon tetrachloride · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20719 · 1,1,1-Trichloroethane · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20718 · 1,2-Dichloroethane · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20717 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20716 · 1,1-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20715 · Vinyl chloride · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20714 · p-Dichlorobenzene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20713 · o-Dichlorobenzene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20712 · DICHLOROMETHANE · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20711 · Xylenes, Total · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20710 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20709 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8481	July 23, 2025	Informal	State Violation/Reminder Notice
8482	July 23, 2025	Informal	State Public Notification requested
8497	August 29, 2025	Resolving	State no longer subject to Rule
8496	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 20708 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2025 · period end April 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field April 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8478 July 23, 2025 Informal State Violation/Reminder Notice
8479 July 23, 2025 Resolving State Compliance achieved
Monitoring or reporting · Resolved
LSL ReportingViolation 20658 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end October 21, 2024 · first reported February 18, 2025 · EPA return-to-compliance field October 21, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8437 October 21, 2024 Resolving State Compliance achieved
8464 November 7, 2024 Informal State Violation/Reminder Notice
EPA health-based flag · Resolved
LSL InventoryViolation 20657 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end October 21, 2024 · first reported February 18, 2025 · EPA return-to-compliance field October 21, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8437 October 21, 2024 Resolving State Compliance achieved
8462 November 7, 2024 Informal State Violation/Reminder Notice
Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 20662 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start October 1, 2024 · period end December 9, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 9, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8454 December 6, 2024 Informal State Violation/Reminder Notice
8453 December 9, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8478	July 23, 2025	Informal	State Violation/Reminder Notice
8479	July 23, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8437	October 21, 2024	Resolving	State Compliance achieved
8464	November 7, 2024	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8437	October 21, 2024	Resolving	State Compliance achieved
8462	November 7, 2024	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8454	December 6, 2024	Informal	State Violation/Reminder Notice
8453	December 9, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 20659 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8440	November 18, 2024	Informal	State Violation/Reminder Notice
8441	November 18, 2024	Informal	State Public Notification requested
8466	January 15, 2025	Resolving	State Compliance achieved
8495	February 2, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 20656 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2024 · period end August 31, 2024 · first reported November 15, 2024 · EPA return-to-compliance field August 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8431	September 26, 2024	Informal	State Violation/Reminder Notice
8432	September 26, 2024	Informal	State Public Notification requested
8461	October 10, 2024	Resolving	State Compliance achieved
8493	February 2, 2026	Informal	State Public Notification received

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 20655 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 2, 2024 · period end July 10, 2024 · first reported November 15, 2024 · 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
8424 July 10, 2024 Resolving State Compliance achieved
8425 August 16, 2024 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 20654 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 2, 2024 · period end August 26, 2024 · first reported November 15, 2024 · EPA return-to-compliance field August 26, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8427 August 16, 2024 Informal State Violation/Reminder Notice
8470 August 26, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8424	July 10, 2024	Resolving	State Compliance achieved
8425	August 16, 2024	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8427	August 16, 2024	Informal	State Violation/Reminder Notice
8470	August 26, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 20653 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 14, 2024 · 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
8419	June 11, 2024	Informal	State Violation/Reminder Notice
8420	June 11, 2024	Informal	State Public Notification requested
8422	July 10, 2024	Informal	State Public Notification received
8449	December 6, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 20650 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start December 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8429 January 26, 2024 Informal State Violation/Reminder Notice
8418 March 13, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8429	January 26, 2024	Informal	State Violation/Reminder Notice
8418	March 13, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 20652 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8415	February 27, 2024	Informal	State Violation/Reminder Notice
8416	February 27, 2024	Informal	State Public Notification requested
8423	July 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 20651 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8415	February 27, 2024	Informal	State Violation/Reminder Notice
8416	February 27, 2024	Informal	State Public Notification requested
8423	July 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 20648 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8409 November 14, 2023 Informal State Violation/Reminder Notice
8411 November 14, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8409	November 14, 2023	Informal	State Violation/Reminder Notice
8411	November 14, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 20645 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 14, 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
8399	August 9, 2023	Informal	State Violation/Reminder Notice
8400	August 9, 2023	Informal	State Public Notification requested
8423	July 30, 2024	Resolving	State Compliance achieved
8471	August 26, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 20644 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 14, 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
8399	August 9, 2023	Informal	State Violation/Reminder Notice
8400	August 9, 2023	Informal	State Public Notification requested
8423	July 30, 2024	Resolving	State Compliance achieved
8471	August 26, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 20642 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start October 1, 2022 · period end October 31, 2022 · first reported February 15, 2023 · EPA return-to-compliance field October 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8393 December 2, 2022 Informal State Violation/Reminder Notice
8395 December 2, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8393	December 2, 2022	Informal	State Violation/Reminder Notice
8395	December 2, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 20641 · Groundwater Rule · Ground Water Rule

Noncompliance period start July 1, 2022 · period end July 21, 2022 · first reported November 16, 2022 · EPA return-to-compliance field July 21, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8392	July 13, 2022	Informal	State Public Notification received
8387	July 20, 2022	Informal	State Violation/Reminder Notice
8388	July 20, 2022	Informal	State Public Notification requested
8390	July 21, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 20640 · Groundwater Rule · Ground Water Rule

Noncompliance period start June 1, 2022 · period end June 30, 2022 · first reported August 15, 2022 · EPA return-to-compliance field June 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8384	July 20, 2022	Informal	State Violation/Reminder Notice
8385	July 20, 2022	Informal	State Public Notification requested
8390	July 21, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 20639 · Groundwater Rule · Ground Water Rule

Noncompliance period start March 1, 2022 · period end March 31, 2022 · first reported August 15, 2022 · EPA return-to-compliance field March 31, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8381	July 20, 2022	Informal	State Violation/Reminder Notice
8382	July 20, 2022	Informal	State Public Notification requested
8390	July 21, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 20635 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported August 15, 2022 · EPA return-to-compliance field March 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8375 May 20, 2022 Informal State Violation/Reminder Notice
8377 May 20, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8375	May 20, 2022	Informal	State Violation/Reminder Notice
8377	May 20, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 20638 · Groundwater Rule · Ground Water Rule

Noncompliance period start December 1, 2021 · period end December 31, 2021 · first reported August 15, 2022 · EPA return-to-compliance field December 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8378	July 20, 2022	Informal	State Violation/Reminder Notice
8379	July 20, 2022	Informal	State Public Notification requested
8390	July 21, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 20632 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8370 November 17, 2021 Resolving State Compliance achieved
8368 December 2, 2021 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8370	November 17, 2021	Resolving	State Compliance achieved
8368	December 2, 2021	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 20631 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported November 10, 2021 · EPA return-to-compliance field June 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8361	August 16, 2021	Informal	State Violation/Reminder Notice
8362	August 16, 2021	Informal	State Public Notification requested
8370	November 17, 2021	Resolving	State Compliance achieved
8391	March 18, 2022	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