AZ0408072 · Arizona
CS WATER COMPANY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 11
- EPA health-based flag
- 6
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
Counties listed by EPA · Mohave 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 11 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, RegularViolation 10767 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2026 · period end March 31, 2026 · first reported May 14, 2026 · EPA return-to-compliance field March 31, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 8054 May 1, 2026 Informal State Violation/Reminder Notice 8055 May 1, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Notification, Known or Potential LSLViolation 10766 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · period end January 30, 2026 · first reported February 13, 2026 · EPA return-to-compliance field January 30, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 8051 January 30, 2026 Informal State Violation/Reminder Notice 8052 January 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 10765 · Arsenic · Arsenic RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field June 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 8047 July 28, 2025 Informal State Violation/Reminder Notice 8048 July 28, 2025 Informal State Public Notification requested 8050 August 6, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 10760 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2022 · period end March 31, 2022 · first reported May 16, 2022 · EPA return-to-compliance field March 31, 2022
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7978 September 9, 2019 Formal State Administrative/Compliance Order without penalty issued 8029 March 24, 2022 Informal State Violation/Reminder Notice 8030 March 24, 2022 Informal State Public Notification requested 8033 April 13, 2022 Informal State Public Notification received 8034 July 21, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 10759 · Arsenic · Arsenic RuleNoncompliance period start October 1, 2021 · period end December 31, 2021 · first reported May 16, 2022 · EPA return-to-compliance field December 31, 2021
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7978 September 9, 2019 Formal State Administrative/Compliance Order without penalty issued 8026 March 24, 2022 Informal State Violation/Reminder Notice 8027 March 24, 2022 Informal State Public Notification requested 8032 April 13, 2022 Informal State Public Notification received 8034 July 21, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 10758 · Arsenic · Arsenic 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 8021 March 11, 2022 Resolving State Compliance achieved 8023 March 24, 2022 Informal State Violation/Reminder Notice 8024 March 24, 2022 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, RegularViolation 10757 · Arsenic · Arsenic RuleNoncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 8018 November 23, 2021 Informal State Violation/Reminder Notice 8019 November 23, 2021 Informal State Public Notification requested 8021 March 11, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 10756 · Arsenic · Arsenic RuleNoncompliance period start July 1, 2021 · period end September 30, 2021 · first reported November 10, 2021 · EPA return-to-compliance field September 30, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7978 September 9, 2019 Formal State Administrative/Compliance Order without penalty issued 8014 July 26, 2021 Informal State Violation/Reminder Notice 8015 July 26, 2021 Informal State Public Notification requested 8034 July 21, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 10755 · Arsenic · Arsenic RuleNoncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 12, 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 7978 September 9, 2019 Formal State Administrative/Compliance Order without penalty issued 8010 June 28, 2021 Informal State Violation/Reminder Notice 8011 June 28, 2021 Informal State Public Notification requested 8034 July 21, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 10754 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported March 31, 2021 · EPA return-to-compliance field March 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7978 September 9, 2019 Formal State Administrative/Compliance Order without penalty issued 8006 March 10, 2021 Informal State Violation/Reminder Notice 8007 March 10, 2021 Informal State Public Notification requested 8034 July 21, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 10752 · Arsenic · Arsenic RuleNoncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 31, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7978 September 9, 2019 Formal State Administrative/Compliance Order without penalty issued 7998 October 27, 2020 Informal State Violation/Reminder Notice 7999 October 27, 2020 Informal State Public Notification requested 8034 July 21, 2022 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