090605132 · California
Mesa Grande - Black Canyon
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 10
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 7
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 9 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 365 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 060513275750052024 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start May 16, 2024 · period end June 26, 2025 · first reported December 18, 2024 · EPA return-to-compliance field June 26, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX06262512196 June 26, 2025 Resolving Federal Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 060513245070052024 · Groundwater Rule · Ground Water RuleNoncompliance period start May 16, 2024 · period end November 25, 2024 · first reported September 27, 2024 · EPA return-to-compliance field November 25, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX11252412196 November 25, 2024 Resolving Federal Compliance achieved Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 060513252500012023 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2023 · first reported March 18, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132IA04012612506 April 1, 2026 Informal Federal Violation/Reminder Notice Other or unclassified · Resolved
Sample Siting Plan Errors (RTCR)Violation 06051325A800042016 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start April 1, 2016 · period end August 11, 2017 · first reported June 30, 2023 · EPA return-to-compliance field August 11, 2017
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX08111788565 August 11, 2017 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060513203104012016 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2016 · period end December 31, 2016 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2016
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX05081787336 May 8, 2017 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Failure Submit IDSE/Subpart V Plan RptViolation 0605132350600102013 · Stage 2 Disinfectants and Disinfection Byproducts Rule · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2013 · period end August 11, 2017 · first reported June 30, 2023 · EPA return-to-compliance field August 11, 2017
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX08111788566 August 11, 2017 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine Minor (TCR)Violation 0605132243100122009 · Coliform (TCR) · Total Coliform RuleNoncompliance period start December 1, 2009 · period end December 31, 2009 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2009
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX05281050704 May 28, 2010 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine Major (TCR)Violation 060513223310032009 · Coliform (TCR) · Total Coliform RuleNoncompliance period start March 1, 2009 · period end March 31, 2009 · first reported June 30, 2023 · EPA return-to-compliance field March 31, 2009
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX01211045583 January 21, 2010 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060513203104012009 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2009 · period end December 31, 2009 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2009
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX05281050703 May 28, 2010 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060513203400012004 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad RuleNoncompliance period start January 1, 2004 · period end December 31, 2004 · first reported March 28, 2024 · EPA return-to-compliance field December 31, 2004
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605132OX01211045629 January 21, 2010 Resolving Federal 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