AZ0411036 · Arizona
MARICOPA CONSOLIDATED DWID
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 13
- EPA health-based flag
- 3
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 8
Counties listed by EPA · Pinal 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 48 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 5495 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2026 · period end January 31, 2026 · first reported May 14, 2026 · EPA return-to-compliance field January 31, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2183 April 15, 2026 Informal State Violation/Reminder Notice 2184 April 15, 2026 Resolving State Compliance achieved Monitoring or reporting · Unaddressed by formal action
Notification, Known or Potential LSLViolation 5492 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · first reported February 13, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2175 January 29, 2026 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 5491 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 20, 2024 · period end January 30, 2025 · first reported February 18, 2025 · EPA return-to-compliance field January 30, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2170 January 13, 2025 Informal State Violation/Reminder Notice 2173 January 30, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 5490 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end December 3, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 3, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2165 November 14, 2024 Informal State Violation/Reminder Notice 2166 November 14, 2024 Informal State Public Notification requested 2168 December 3, 2024 Resolving State Compliance achieved 2174 February 27, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
LSL ReportingViolation 5489 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end December 3, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 3, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2162 November 7, 2024 Informal State Violation/Reminder Notice 2163 November 7, 2024 Informal State Public Notification requested 2168 December 3, 2024 Resolving State Compliance achieved 2172 February 27, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 5483 · E. COLI · Ground Water RuleNoncompliance period start March 9, 2023 · period end August 24, 2023 · first reported May 15, 2023 · EPA return-to-compliance field August 24, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2152 April 27, 2023 Informal State Violation/Reminder Notice 2155 August 24, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 5480 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2022 · period end March 25, 2022 · first reported May 16, 2022 · EPA return-to-compliance field March 25, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2142 March 25, 2022 Informal State Violation/Reminder Notice 2144 March 25, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 5477 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2021 · period end October 13, 2021 · first reported February 16, 2022 · EPA return-to-compliance field October 13, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2135 October 13, 2021 Resolving State Compliance achieved 2133 October 25, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 5476 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start April 1, 2021 · period end May 19, 2021 · first reported August 12, 2021 · EPA return-to-compliance field May 19, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2131 May 19, 2021 Resolving State Compliance achieved 2129 May 20, 2021 Informal State Violation/Reminder Notice EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 5474 · Nitrate · Nitrate RuleNoncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 5473 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start August 1, 2019 · period end July 31, 2020 · first reported February 2, 2021 · EPA return-to-compliance field July 31, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2122 December 9, 2020 Informal State Violation/Reminder Notice 2123 December 9, 2020 Informal State Public Notification requested 2148 September 26, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 5472 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start August 1, 2019 · period end July 31, 2020 · first reported February 2, 2021 · EPA return-to-compliance field July 31, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2122 December 9, 2020 Informal State Violation/Reminder Notice 2123 December 9, 2020 Informal State Public Notification requested 2148 September 26, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 5496 · Groundwater Rule · Ground Water RuleNoncompliance period start June 15, 2018 · period end May 8, 2026 · first reported May 14, 2026 · EPA return-to-compliance field May 8, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2186 May 8, 2026 Informal State Violation/Reminder Notice 2187 May 8, 2026 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