Ventura Wwd No. 8 - Simi Valley Water System's tap water quality report is the compilation of data collected from federal, state, and local government agencies, most prominently the EPA. We strive to populate the report with the latest data concerning water contaminants, lead and copper levels, and water quality violations. We only collect drinking water data from public water systems.

PWS Service Information
PWS ID: CA5610023
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 97,292
Contact Information
[email protected]

This public water system services 1 county.

Summary Results

A summary view of tests in which a water contaminant found to exceed the Maximum Contaminant Level (MCL) set by the EPA.

We couldn't find any records of contaminants exceeding the regulated limits in your water.

Other Water Contaminants Tested

The following contaminants were tested and found to be within national EPA guidelines.

We couldn't find any records of contaminants in your water.

Lead and Copper Data

Lead and copper are recorded separately from other contaminants because of the Lead and Copper Rule. As with all other results, these are the findings at the water supply level. Lead and copper can be — and often are — deposited in drinking water in between the water facility and your tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
CA65632 lead 2017-01-01 2019-12-31 0.0012mg/L
CA60621 lead 2015-01-01 2017-12-31 0.0019mg/L
CA60599 lead 2014-01-01 2016-12-31 0.0019mg/L
CA43331 lead 2012-01-01 2014-12-31 0.0019mg/L
561002310235L lead 2010-01-01 2010-12-31 0.0011mg/L


Known violations of the Safe Drinking Water Act as recorded by the EPA.

Compliance Dates Rule Violation Type Contaminant Name Status
2012-01-01 - 2012-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Known
2012-01-01 - 2012-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Known
2008-11-01 - 2008-11-30 Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Known
- N/A Inorganic Chemicals Maximum Contaminant Level Violation, Single Sample Selenium Known

Local Water Testing

Find a lab in your area so you can get your tap or well water tested. This list contains both governmental and private labs, all of which are EPA-certified for drinking water testing.

Lab Location Zip Code
ALS Environmental – Simi Valley Simi Valley, CA 93065
ALS Environmental – Simi Valley Simi Valley, CA 93065
Atmospheric Analysis and Consulting, Inc. Ventura, CA 93003

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about Ventura Wwd No. 8 - Simi Valley (CA5610023).

What My Water Data Means

Water data isn't always easy to interpret, but by following the links on this page you should be able to have most of your questions answered. By clicking the name of a water contaminant or secondary substance you can learn about that specific substance. Ultimately this page should give you some insight towards learning if your water is safe, what water filter you should buy (if any), and how well your local water compares against other sources.


The origin of's water data is explained on our Data Sources page.

Why Is My Water Data Not More Recent?

The recency of the data for your ZIP code depends on the last your water source was tested, by a federal, state, or local agency. More information about the timing can be determined by learning about the dataset in question and seeing how often the EPA (other another governing body) mandated testing.