CA4900720 · California
MOBILE HOME ESTATES
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 27
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 1
- Monitoring and reporting records
- 26
Counties listed by EPA · Sonoma County, California
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 25 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 1,095 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Addressed by formal action
LSL InventoryViolation 9903063 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported April 1, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9999900000000000001 April 10, 2026 Formal Federal Final Administrative Order issued Monitoring or reporting · Addressed by formal action
LSL ReportingViolation 9903064 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported April 1, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9999900000000000001 April 10, 2026 Formal Federal Final Administrative Order issued Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9903062 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2024 · period end November 24, 2025 · first reported October 2, 2024 · EPA return-to-compliance field November 24, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918033 September 24, 2024 Informal State Bilateral Compliance Agreement signed 9918034 November 24, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9903060 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2024 · period end November 24, 2025 · first reported August 15, 2024 · EPA return-to-compliance field November 24, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918030 May 28, 2024 Formal State Administrative/Compliance Order without penalty issued 9918034 November 24, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9903012 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2020 · period end February 18, 2022 · first reported February 16, 2021 · EPA return-to-compliance field February 18, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918026 February 18, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9903011 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2020 · period end March 8, 2024 · first reported February 16, 2021 · EPA return-to-compliance field March 8, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918022 January 27, 2021 Formal State Administrative/Compliance Order with penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9903009 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2019 · period end March 8, 2024 · first reported May 18, 2020 · EPA return-to-compliance field March 8, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918018 February 20, 2020 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9903008 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2019 · period end February 18, 2022 · first reported February 14, 2020 · EPA return-to-compliance field February 18, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918026 February 18, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903037 · Nitrite · Nitrate RuleNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903036 · Thallium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903035 · Selenium · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903032 · Mercury · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903031 · Fluoride · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903030 · Chromium · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903029 · Cadmium · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903028 · Barium · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903027 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903026 · Beryllium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903024 · Simazine · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903023 · Picloram · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2018 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2018
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903022 · Pentachlorophenol · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903021 · OXAMYL · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903020 · Endothall · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903019 · Diquat · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903018 · Atrazine · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903017 · Dalapon · Synthetic Organic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9903015 · Antimony, Total · Inorganic ChemicalsNoncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9918025 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 9918029 March 8, 2024 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