- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 8 of 8 samples, average 14.8 µg/L, highest 16 µg/L (EPA UCMR 5 testing, Mar 2023–Dec 2023)
Public EPA test results
What EPA records show for Casitas Municipal Water Dist
EPA system ID CA5610024 · serves Ventura County, CA · about 11,005 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Casitas Municipal Water Dist (EPA CA5610024)
What EPA records show for Casitas Municipal Water Dist, as of October 14, 2026
Health-standard violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), Oct 2023–Feb 2024 (EPA SDWIS).
Lead: 9 in 10 homes tested came in at or below 0 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2021–Dec 31, 2023). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Casitas Municipal Water Dist use chloramine?
We didn't find chloramine in Casitas Municipal Water Dist's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)