Tap Water Quality Report
Tap water quality in VENTURA, California
Tap water in VENTURA, California receives a grade of D (65/100) from TapWaterSafety.org. It's served by VENTURA WATER DEPARTMENT. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in VENTURA's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving VENTURA.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 37.4 ppb, 624x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 36.2 ppb, 362x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 37.7 ppb, 251x above the EWG health guideline of 0.15 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.895 ppb.
EPA compliance record
Official U.S. EPA records for VENTURA WATER DEPARTMENT (system ID CA5610017) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for VENTURA
Filters matched to the specific contaminants in VENTURA's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in VENTURA's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
37.4 ppb | 0.06 | — | — | — | — | — | 624× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
37.7 ppb | 0.15 | 80.0 | 100 | — | — | — | 251× over |
| Arsenic Heavy metal |
0.895 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 224× over |
| Dibromoacetic acid Disinfection byproduct |
5.95 ppb | 0.03 | — | — | — | — | — | 198× over |
| Bromodichloromethane Disinfection byproduct |
10.7 ppb | 0.06 | — | — | — | — | — | 178× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.143 ppt | 0.001 | 10.0 | — | — | — | — | 143× over |
| Dibromochloromethane Disinfection byproduct |
9.11 ppb | 0.1 | — | — | — | — | — | 91× over |
| Trichloroacetic acid Disinfection byproduct |
7.28 ppb | 0.1 | — | — | — | — | — | 73× over |
| Dichloroacetic acid Disinfection byproduct |
13.6 ppb | 0.2 | — | — | — | — | — | 68× over |
| Chloroform Disinfection byproduct |
14.1 ppb | 0.4 | — | — | — | — | — | 35× over |
| Uranium Radiological |
4.44 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 10× over |
| Bromoform Disinfection byproduct |
3.78 ppb | 0.5 | — | — | — | — | — | 7.6× over |
| Chromium (hexavalent) Heavy metal |
0.0459 ppb | 0.02 | — | — | — | — | — | 2.3× over |
| Chlorate Disinfection byproduct |
227.2 ppb | 210.0 | — | — | — | — | — | 1.1× over |
| Selenium Heavy metal |
8.95 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Molybdenum Other |
7.8 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.887 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
4.03 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.873 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Bromochloromethane Other |
0.00203 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
16.3 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.23 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
1.01 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.148 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.435 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
40.6 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from VENTURA WATER DEPARTMENT.