090400301 · California
Mesquite Creek
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 17
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 14
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 174 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040030127099912025 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end March 6, 2025 · first reported June 30, 2025 · EPA return-to-compliance field March 6, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX03062512181 March 6, 2025 Resolving Federal Compliance achieved 0400301IA06112512157 June 11, 2025 Informal Federal Violation/Reminder Notice 0400301IA06112512165 June 11, 2025 Informal Federal Violation/Reminder Notice Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 04003014B800092024 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 1, 2024 · period end October 21, 2024 · first reported December 18, 2024 · EPA return-to-compliance field October 21, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX10212411927 October 21, 2024 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 04003014B800082024 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2024 · period end October 21, 2024 · first reported December 18, 2024 · EPA return-to-compliance field October 21, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX10212411926 October 21, 2024 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 04003013A800062024 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 1, 2024 · period end June 30, 2024 · first reported September 27, 2024 · EPA return-to-compliance field June 30, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX08052411927 August 5, 2024 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040030127099942024 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2024 · period end June 30, 2024 · first reported September 27, 2024 · EPA return-to-compliance field June 30, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX08052411927 August 5, 2024 Resolving Federal Compliance achieved Monitoring or reporting · Unaddressed by formal action
Lead Consumer NoticeViolation 0400301665000102023 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 19, 2023 · first reported March 28, 2024
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 0400301270999102023 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 28, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX01232411688 January 23, 2024 Resolving Federal Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 040030171700072023 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end August 22, 2024 · first reported December 5, 2023 · EPA return-to-compliance field August 22, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX08222411927 August 22, 2024 Resolving Federal Compliance achieved Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 040030152500012023 · 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 0400301IA04012612506 April 1, 2026 Informal Federal Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040030127245612023 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported September 27, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX10182411927 October 18, 2024 Resolving Federal Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 040030171700072022 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end December 22, 2022 · first reported June 30, 2023 · EPA return-to-compliance field December 22, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX12222211346 December 22, 2022 Resolving Federal Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 040030171700072021 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2021 · period end December 22, 2021 · first reported June 30, 2023 · EPA return-to-compliance field December 22, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX12222110939 December 22, 2021 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine Major (TCR)Violation 040030123310092010 · Coliform (TCR) · Total Coliform RuleNoncompliance period start September 1, 2010 · period end September 30, 2010 · first reported June 30, 2023 · EPA return-to-compliance field September 30, 2010
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX03211161361 March 21, 2011 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040030127295012010 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2010 · period end December 31, 2010 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2010
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX04121162801 April 12, 2011 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040030127245612010 · Total Haloacetic Acids (HAA5) · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2010 · period end December 31, 2010 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2010
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX04121162802 April 12, 2011 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040030127295012007 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2007 · period end December 31, 2007 · first reported June 22, 2022 · EPA return-to-compliance field December 31, 2007
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX03311049365 March 31, 2010 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040030127245612007 · Total Haloacetic Acids (HAA5) · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2007 · period end December 31, 2007 · first reported June 22, 2022 · EPA return-to-compliance field December 31, 2007
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0400301OX03311049333 March 31, 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