Water Quality Report · Updated May 12, 2026
VENTURA WATER DEPARTMENT
VENTURA WATER DEPARTMENT delivers tap water graded D (64/100) by TapWaterSafety.org. The utility serves approximately 113,500 residents in VENTURA, California using surface water. 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. For questions, the utility can be reached at 805-667-4500.
Is VENTURA tap water safe to drink?
VENTURA WATER DEPARTMENT delivers tap water that earns a grade of D (64/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including haloacetic acids (haa9) significantly above health guideline.
The utility serves 113,500 residents in VENTURA, drawing from surface water.
Public testing data identifies 15 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Arsenic, Dibromoacetic acid, Bromodichloromethane, Perfluorohexane sulfonate (PFHXS), Dibromochloromethane, Trichloroacetic acid, Dichloroacetic acid, Chloroform, Uranium, Bromoform, Chromium (hexavalent), Chlorate. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for VENTURA residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for VENTURA WATER DEPARTMENT.
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.
Contact VENTURA WATER DEPARTMENT
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for VENTURA
Filters matched to the specific contaminants in this water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 64/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
VENTURA WATER DEPARTMENT service area
This water system serves 1 community in Ventura County, California. Click any city for its dedicated tap water quality page.
Find the right filter for VENTURA water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.