090605011 · California
Mesa Grande (Tract 2)
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 18
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 17
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 17 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 060501103104012024 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported March 27, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0605011IA04012512073 April 1, 2025 Informal Federal Violation/Reminder Notice 0605011IA04032512086 April 3, 2025 Informal Federal Violation/Reminder Notice 0605011OX01132612364 January 13, 2026 Resolving Federal Compliance achieved 0605011OX01132612404 January 13, 2026 Resolving Federal Compliance achieved Monitoring or reporting · Archived
Monitoring, RegularViolation 060501103104012023 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported March 28, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103295972020 · Chlordane · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010815 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103238372020 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010816 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103227472020 · HEXACHLOROBENZENE · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010816 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103206772020 · Heptachlor epoxide · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010815 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103206572020 · Heptachlor · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010815 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103204272020 · Hexachlorocyclopentadiene · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010816 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103202072020 · Toxaphene · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010816 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103201572020 · Methoxychlor · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010816 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103201072020 · BHC-GAMMA · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010816 November 17, 2020 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103200572020 · Endrin · Synthetic Organic ChemicalsNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported June 30, 2023 · 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 0605011OX11172010816 November 17, 2020 Resolving Federal Compliance achieved Other or unclassified · Resolved
Sample Siting Plan Errors (RTCR)Violation 06050115A800042016 · 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 0605011OX08111788564 August 11, 2017 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103104012016 · 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 0605011OX05081787338 May 8, 2017 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Failure Submit IDSE/Subpart V Plan RptViolation 0605011350600102013 · 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 0605011OX08111788563 August 11, 2017 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine Minor (TCR)Violation 0605011243100122009 · 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 0605011OX05281050702 May 28, 2010 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103104012009 · 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 0605011OX05281050701 May 28, 2010 Resolving Federal Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 060501103400012004 · 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 0605011OX01211043293 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