NN0436006 · Arizona
Dilcon Community Boarding School BIA
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 21
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 18
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 89 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 043600627099972025 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2025 · period end September 30, 2025 · first reported June 23, 2026 · EPA return-to-compliance field September 30, 2025
No linked action row appears in the records shown.Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 043600627099942025 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported June 23, 2026 · EPA return-to-compliance field June 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006FJ12052542984 December 5, 2025 Informal State Formal Notice of Violation issued Monitoring or reporting · Archived
Monitoring, RegularViolation 043600603100542025 · Arsenic · Arsenic RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported December 31, 2025 · EPA return-to-compliance field June 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006FJ12052542983 December 5, 2025 Informal State Formal Notice of Violation issued Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 043600675750032025 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start March 1, 2025 · first reported December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006FJ12052542985 December 5, 2025 Informal State Formal Notice of Violation issued Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 04360063A800032025 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 1, 2025 · period end March 31, 2025 · first reported June 30, 2025 · EPA return-to-compliance field March 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX04012542640 April 1, 2025 Resolving State Compliance achieved Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 043600627099912025 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported June 23, 2026 · EPA return-to-compliance field March 31, 2025
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Monitoring, RegularViolation 043600603100512025 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported June 30, 2025 · EPA return-to-compliance field March 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006FJ08052542719 August 5, 2025 Informal State Formal Notice of Violation issued 0436006FJ08052542720 August 5, 2025 Informal State Formal Notice of Violation issued 0436006OX09082542872 September 8, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 0436006270999102024 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end November 5, 2024 · first reported June 23, 2026 · EPA return-to-compliance field November 5, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11052441885 November 5, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 0436006031005102024 · Arsenic · Arsenic RuleNoncompliance period start October 1, 2024 · period end November 13, 2024 · first reported March 31, 2025 · EPA return-to-compliance field November 13, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11132441994 November 13, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 043600603100572024 · Arsenic · Arsenic RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported December 18, 2024 · EPA return-to-compliance field September 30, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11132441993 November 13, 2024 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 043600675750012024 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start January 1, 2024 · period end December 21, 2023 · first reported October 6, 2024 · EPA return-to-compliance field December 21, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX12212341369 December 21, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 043600603104112024 · Nitrite · Nitrate RuleNoncompliance period start January 1, 2024 · period end November 13, 2024 · first reported March 31, 2025 · EPA return-to-compliance field November 13, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11132441996 November 13, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 043600603104012024 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2024 · period end November 13, 2024 · first reported March 31, 2025 · EPA return-to-compliance field November 13, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11132441995 November 13, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 043600603100512024 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported October 6, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX05282441193 May 28, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 043600602100512024 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported October 6, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX10052441337 October 5, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 04360064B8000102023 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2023 · period end November 30, 2023 · first reported March 28, 2024 · EPA return-to-compliance field November 30, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11302340809 November 30, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 0436006270999102023 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end November 2, 2023 · first reported June 23, 2026 · EPA return-to-compliance field November 2, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11022340812 November 2, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 043600627099972023 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported June 23, 2026 · 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 0436006OX11022340811 November 2, 2023 Resolving State Compliance achieved 0436006FJ12292340550 December 29, 2023 Informal State Formal Notice of Violation issued Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 043600627099942023 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported June 23, 2026 · EPA return-to-compliance field June 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006FJ10172340392 October 17, 2023 Informal State Formal Notice of Violation issued 0436006OX11022340810 November 2, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 04360064B8000102022 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2022 · period end November 17, 2022 · first reported March 13, 2023 · EPA return-to-compliance field November 17, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX11172239945 November 17, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 04360063A800012021 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2021 · period end January 31, 2021 · first reported May 28, 2021 · EPA return-to-compliance field January 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0436006OX02082138688 February 8, 2021 Resolving State Compliance achieved
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