Is Casa Conejo, CA tap water safe?
The short answer
Neither of the 2 utilities serving Casa Conejo has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Cal American Water Co, which serves the most people here, has 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17.9 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Casa Conejo’s ZIP codes, from EPA’s estimates.
- Open report
Cal American Water Co
California · serves 66,809 people · about 440 in Casa Conejo
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17.9 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
City of Thousand Oaks Water Department
California · serves 54,770 people · under 100 in Casa Conejo
Nothing in its records is above a health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Cal American Water Co’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Casa Conejo
The 3 labs California certifies closest to Casa Conejo, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Camrosa Water District Wastewater Laboratory
Camarillo, CA · about 6 miles
Certified for bacteria
Ventura County Public Health Laboratory
Oxnard, CA · about 12 miles
Certified for bacteria
Fruit Growers Laboratory, Inc.
Santa Paula, CA · about 14 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
ZIP codes in Casa Conejo
Which ZIP codes are in Casa Conejo: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Casa Conejo
Other towns in Ventura County with a page of their own.
What to do next
- Read Cal American Water Co’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water