CA4010027 · California
NACIMIENTO WATER COMPANY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 16
- EPA health-based flag
- 10
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
Counties listed by EPA · San Luis Obispo 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 13 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.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9906057 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706071 January 30, 2025 Formal State Administrative/Compliance Order without penalty issued Other or unclassified · Addressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 9906056 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2024 · first reported February 24, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706070 November 19, 2024 Formal State Administrative/Compliance Order without penalty issued Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9906053 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2023 · period end January 1, 2024 · first reported February 15, 2024 · EPA return-to-compliance field January 1, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706067 January 1, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906051 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported October 2, 2023 · EPA return-to-compliance field June 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706065 August 17, 2023 Formal State Administrative/Compliance Order without penalty issued 9706069 August 7, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906050 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported October 2, 2023 · EPA return-to-compliance field June 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706065 August 17, 2023 Formal State Administrative/Compliance Order without penalty issued 9706069 August 7, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9906048 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field June 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706065 August 17, 2023 Formal State Administrative/Compliance Order without penalty issued 9706069 August 7, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9906047 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field June 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706065 August 17, 2023 Formal State Administrative/Compliance Order without penalty issued 9706069 August 7, 2024 Resolving State Compliance achieved Monitoring or reporting · Addressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 9906052 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2023 · first reported February 15, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706066 December 15, 2023 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906046 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706061 May 1, 2023 Formal State Administrative/Compliance Order without penalty issued 9706064 July 19, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906045 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706061 May 1, 2023 Formal State Administrative/Compliance Order without penalty issued 9706064 July 19, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906044 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706060 February 3, 2023 Formal State Administrative/Compliance Order without penalty issued 9706062 May 17, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906043 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706059 February 3, 2023 Formal State Administrative/Compliance Order without penalty issued 9706062 May 17, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906042 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 17, 2022 · EPA return-to-compliance field September 30, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706058 November 3, 2022 Formal State Administrative/Compliance Order without penalty issued 9706063 May 17, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906041 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 17, 2022 · EPA return-to-compliance field September 30, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706057 November 3, 2022 Formal State Administrative/Compliance Order without penalty issued 9706063 May 17, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9906040 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported January 5, 2021 · EPA return-to-compliance field September 30, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706055 October 13, 2020 Formal State Administrative/Compliance Order without penalty issued 9706056 January 1, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9906039 · Bromate · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported January 5, 2021 · EPA return-to-compliance field September 30, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9706055 October 13, 2020 Formal State Administrative/Compliance Order without penalty issued 9706056 January 1, 2021 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