AZ0410450 · Arizona
SHILOH WATER COMPANY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 10
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 9
Counties listed by EPA · Pima 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 10 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.
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 94 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2026 · period end February 28, 2026 · first reported May 14, 2026 · EPA return-to-compliance field February 28, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 93 April 7, 2026 Informal State Violation/Reminder Notice 94 April 7, 2026 Informal State Public Notification requested 96 April 27, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 93 · E. COLI · Ground Water RuleNoncompliance period start July 23, 2025 · period end December 11, 2025 · first reported February 24, 2026 · EPA return-to-compliance field December 11, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 89 October 7, 2025 Informal State Violation/Reminder Notice 90 October 7, 2025 Informal State Public Notification requested 92 December 11, 2025 Resolving State Compliance achieved 97 June 12, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 90 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 24, 2026 · 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 86 February 20, 2024 Informal State Violation/Reminder Notice 88 February 20, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 83 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2021 · period end December 31, 2021 · first reported February 16, 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 70 January 17, 2022 Resolving State Compliance achieved 54 January 26, 2022 Informal State Violation/Reminder Notice 55 January 26, 2022 Informal State Public Notification requested Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 82 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start October 2, 2021 · period end November 22, 2021 · first reported February 16, 2022 · EPA return-to-compliance field November 22, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 51 November 22, 2021 Informal State Violation/Reminder Notice 53 November 22, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 84 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2021 · period end December 31, 2021 · first reported May 16, 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 66 February 22, 2022 Informal State Violation/Reminder Notice 77 February 22, 2022 Informal State Violation/Reminder Notice 81 April 7, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 79 · Nitrate · Nitrate RuleNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported March 31, 2021 · EPA return-to-compliance field September 30, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 45 October 21, 2020 Resolving State Compliance achieved 42 February 17, 2021 Informal State Violation/Reminder Notice 43 February 17, 2021 Informal State Public Notification requested 50 November 22, 2021 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 78 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported February 2, 2021 · EPA return-to-compliance field September 30, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 46 December 30, 2020 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 81 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2018 · period end June 30, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 30, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 49 July 29, 2021 Resolving State Compliance achieved 47 August 5, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 80 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2018 · period end June 30, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 30, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 49 July 29, 2021 Resolving State Compliance achieved 47 August 5, 2021 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