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Public water system record

Ventura Water Department

Serves San Buenaventura (Ventura) and Saticoy, Ventura County, CA · 113,500 people served

Federal records show 1 health-based violation and no monitoring/reporting issues for Ventura Water Department in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • CA5610017
  • VENTURA
  • CA
  • 113,500 served

System profile

Source water Surface water
ZIP 93001
EPA system ID CA5610017

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Ventura Water Department draws water from 11 wells and 3 surface water intakes (2 of them for emergency, seasonal or other part-time use).
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2018.
  • Most recent formal enforcement: compliance order (no penalty) by California, August 2018.
  • Record on file since 2015, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 31,628 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.

Contaminant Rule family Start date Status Acute
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jul 1, 2018 Resolved No

Full record since 2015

EPA's records for Ventura Water Department go back to 2015. Before October 19, 2016 they list 2 health-based violations (2 resolved) and no monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2010 to October 18, 2016 2 0
October 19, 2016 to 2019 1 0

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2015, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Apr 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jan 1, 2015 Resolved

Enforcement actions

California regulators took 3 formal enforcement actions against Ventura Water Department between 2015 and 2018. The most recent was a compliance order (no penalty) in August 2018.

Date By Action Violations covered
Aug 6, 2018 California Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
May 26, 2015 California Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Feb 20, 2015 California Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

1 incident

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Ventura Water Department draws water from 11 wells and 3 surface water intakes (2 of them for emergency, seasonal or other part-time use). It also buys water from Casitas Municipal Water Dist.

Buys water from

Annual water quality report

Ventura Water Department 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

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