Tap Water Results

Is Ventura, CA tap water safe?

Data: U.S. EPA · How we read the data · How we check it

Summary

No federal limits exceeded in EPA data for Ventura Water Department. 2 PFAS were detected below the limits.

3 public water systems serve parts of Ventura. The largest, Ventura Water Department, serves 112,285 people. Your water bill names your system.

Largest system

Ventura Water Department

112,285 people · Surface water · EPA ID CA5610017

Buys treated water from Casitas Municipal Water District.

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Detected, below limit
0.75 ppt10 pptDetected, below limit
PFNA
Not detected
–10 pptNot detected
HFPO-DA (GenX)
Not detected
–10 pptNot detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 0 ppb at the 90th percentile (Nov 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 1

Full Ventura Water Department results

Across California, 129 of 691 water systems EPA tested had PFAS above a 2024 federal limit, and 26 systems were above the lead action level in results from the last five years. California results.

Ventura homes and lead pipes

63%
of homes built before 1980 (California 56%, US 50%)
12%
built before 1950 (California 14%)
44%
of households rent (California 44%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for San Buenaventura (Ventura) city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Ventura

  • Triunfo Water & Sanitation District
    13,898 people · Purchased surface water · California · reported ZIPs here
    No PFAS above limits
  • Casitas Municipal Water District
    11,005 people · Surface water · California · reported ZIPs here
    Haloacetic acids (HAA5) violationAlso: Lithium above screening level

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Oxnard 5 mi
Oxnard Water Dept
Oxnard Water DeptNone above limits0 ppb
Santa Paula 12 mi
City of Santa Paula
City of Santa PaulaNone above limits0 ppb
Camarillo 13 mi
Camarillo Water Dept
Camarillo Water DeptNone above limits0 ppb
Moorpark 22 mi
Ventura Cwwd No. 1 – Moorpark Water System
Ventura Cwwd No. 1 – Moorpark Water SystemNone above limits0 ppb
Thousand Oaks 22 mi
Las Virgenes Municipal Water District
Las Virgenes Municipal Water DistrictNone above limits0 ppb
Santa Barbara 28 mi
City of Santa Barbara Water Department
City of Santa Barbara Water DepartmentNone above limits2.5 ppb
Ventura ZIP codes (2)
  • 93003
  • 93004

Questions

Is Ventura tap water safe to drink?

Ventura Water Department had 1 health-based violation since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Ventura, CA?

3 public water systems serve parts of Ventura. The largest is Ventura Water Department (112,285 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Ventura tap water have PFAS?

Ventura Water Department had 2 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Ventura homes have lead pipes?

Census estimates put 63% of Ventura homes as built before 1980 (California: 56%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Ventura Water Department's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.