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Public water system record

Westhaven C.S.D.

Serves Westhaven-Moonstone, Humboldt County, CA · 490 people served

Federal records show no health-based violations and 4 monitoring/reporting issues for Westhaven C.S.D. in the last ten years.

  • CA1210024
  • TRINIDAD
  • CA
  • 490 served

System profile

Source water Surface water
ZIP 95570
EPA system ID CA1210024

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
4

Key facts

  • Westhaven C.S.D. draws water from 3 wells and 4 surface water intakes (4 of them for emergency, seasonal or other part-time use).
  • Most recent formal enforcement: compliance order (no penalty) by California, March 2022.
  • Record on file since 1993, with 8 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 232 service lines.

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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.

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2025 Resolved
Revised Total Coliform Rule
Monitoring violation
 Oct 1, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2022 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2021 Resolved

Full record since 1993

EPA's records for Westhaven C.S.D. go back to 1993. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2000s 1 0
2010 to October 18, 2016 7 0
2020s 0 4

Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began April 2012, Resolved.

Show all 8 health-based violations before October 19, 2016
Contaminant Start date Status
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.132 mg/L, federal limit 0.06 mg/L (2.2 times the limit)
 Apr 1, 2012 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Oct 1, 2011 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.12 mg/L, federal limit 0.06 mg/L (2 times the limit)
 Jul 1, 2011 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.1169 mg/L, federal limit 0.06 mg/L (1.9 times the limit)
 Apr 1, 2011 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.22 mg/L, federal limit 0.06 mg/L (3.7 times the limit)
 Oct 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1139 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Oct 1, 2010 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.169 mg/L, federal limit 0.06 mg/L (2.8 times the limit)
 Apr 1, 2010 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.1541 mg/L, federal limit 0.06 mg/L (2.6 times the limit)
 Apr 1, 2009 Resolved

Enforcement actions

California regulators took 7 formal enforcement actions against Westhaven C.S.D. between 2010 and 2022. The most recent was a compliance order (no penalty) in March 2022.

Date By Action Violations covered
Mar 7, 2022 California Compliance order (no penalty) 1 violation: Lead and Copper Rule
Aug 8, 2012 California Compliance order (no penalty) 1 violation (1 health-based): Haloacetic Acids (HAA5)
Feb 2, 2012 California Compliance order (no penalty) 1 violation (1 health-based): Haloacetic Acids (HAA5)
Sep 13, 2011 California Compliance order (no penalty) 1 violation (1 health-based): Haloacetic Acids (HAA5)
Aug 17, 2011 California Compliance order (no penalty) 1 violation (1 health-based): Haloacetic Acids (HAA5)
Mar 8, 2011 California Compliance order (no penalty) 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Apr 14, 2010 California Compliance order (no penalty) 1 violation (1 health-based): Haloacetic Acids (HAA5)

Where the water comes from

Westhaven C.S.D. draws water from 3 wells and 4 surface water intakes (4 of them for emergency, seasonal or other part-time use).

Annual water quality report

Westhaven C.S.D. 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 Westhaven C.S.D. 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.

Certified drinking water labs by state EPA guidance for private wells