Public water system record

Higuera Apartments

Serves an area of San Luis Obispo County, CA · 30 people served

Federal records show 21 health-based violations and 8 monitoring/reporting issues for Higuera Apartments in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

  • CA4000563
  • SAN LUIS OBISPO
  • CA
  • 30 served

System profile

Source water Groundwater
ZIP 93401
EPA system ID CA4000563

Verify this system on EPA ECHO →

Health-based violations, last 10 years
21
Resolved
1
Unresolved
1
Archived by EPA
19
Any acute record
Yes
Monitoring issues, last 10 years
8

Key facts

  • Higuera Apartments draws water from 1 well.
  • Highest measured level in the last 10 years: Nitrate, 14.4 mg/L, federal limit 10 mg/L (1.4 times the limit), 2023.
  • Most recent formal enforcement: compliance order (no penalty) by California, November 2025.
  • Record on file since 2005, with 0 health-based violations before October 19, 2016.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Jan 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
350 Oct 17, 2024 Active No
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Oct 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Jul 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Apr 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Jan 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Oct 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Jul 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
330 Apr 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 14.4 mg/L, federal limit 10 mg/L (1.4 times the limit)
330 Jan 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 14.4 mg/L, federal limit 10 mg/L (1.4 times the limit)
330 Oct 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
330 Jul 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 14 mg/L, federal limit 10 mg/L (1.4 times the limit)
330 Apr 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
330 Jan 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
330 Oct 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
330 Jul 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
330 Apr 5, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Yes
Nitrate
Contaminant limit exceeded
330 Jan 1, 2017 Resolved Yes

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
Oct 1, 2025 Active
Enforcement action in place
LEAD AND COPPER RULE REVISIONS
RPT
Oct 17, 2024 Active
Nitrate
Monitoring and reporting
Jan 1, 2022 Resolved
Nitrate
Monitoring and reporting
Jan 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2019 Resolved
Lead and Copper Rule
Monitoring and reporting
Jul 1, 2018 Resolved
Nitrate
Monitoring and reporting
Jan 1, 2018 Resolved

Full record since 2005

EPA's records for Higuera Apartments go back to 2005. Before October 19, 2016 they list no health-based violations and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
2000s 0 1
October 19, 2016 to 2019 1 3
2020s 20 5

Enforcement actions

California regulators took 10 formal enforcement actions against Higuera Apartments between 2019 and 2025. The most recent was a compliance order (no penalty) in November 2025.

Date By Action Violations covered
Nov 13, 2025 California Compliance order (no penalty) 1 violation: Lead and Copper Rule
Feb 10, 2023 California Compliance order (no penalty) 2 violations (1 health-based): Nitrate
Nov 23, 2021 California Compliance order (no penalty) 15 violations (15 health-based): Nitrate
Jul 1, 2021 California Compliance order (no penalty) 2 violations (2 health-based): Nitrate
Apr 5, 2021 California Compliance order (no penalty) 1 violation (1 health-based): Nitrate
Feb 2, 2021 California Compliance order (no penalty) 1 violation: Nitrate
Jan 19, 2021 California Compliance order (no penalty) 1 violation (1 health-based): Nitrate
Feb 27, 2020 California Compliance order (no penalty) 1 violation: Lead and Copper Rule
Apr 16, 2019 California Compliance order (no penalty) 1 violation: Nitrate
Mar 14, 2019 California Compliance order (no penalty) 2 violations: Lead and Copper Rule

What the violations mean

Nitrate

20 incidents

Nitrate exceeded the federal limit

High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Higuera Apartments draws water from 1 well.

Annual water quality report

Higuera Apartments must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Higuera Apartments for a copy.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.