What was found in Ventura's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 900000 µg/L 9000% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 2/3 | SYR4 |
| Nitrate | 5158.42 µg/L 52% of the EPA limit 10000 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 9960.95 µg/L — SATICOY COUNTRY CLUB-CITY OF VENTURA · 196 people · 2019 | 2/3 | SYR4 |
| Fluoride | 630 µg/L 16% of the EPA limit 4000 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 2/3 | SYR4 |
| Lead | 161.525 µg/L 1077% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 2/3 | SYR4 |
| Lithium | 140 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2023 | 1/3 | UCMR-5 |
| TTHM | 86.84 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 3/3 | SYR4 |
| Copper | 66.15 µg/L 5.1% of the EPA limit 1300 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 55 µg/L 92% of the EPA limit 60 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 61.2 µg/L — RINCON WATER & ROAD WORKS · 25 people · 2019 | 3/3 | SYR4 |
| Barium | 48.475 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 2/3 | SYR4 |
| Selenium | 39.3 µg/L 79% of the EPA limit 50 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 40 µg/L — SATICOY COUNTRY CLUB-CITY OF VENTURA · 196 people · 2018 | 2/3 | SYR4 |
| Chloroform | 35.5 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 35.6 µg/L — RINCON WATER & ROAD WORKS · 25 people · 2019 | 3/3 | SYR4 |
| Bromoform | 19.3 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 34.23 µg/L — SATICOY COUNTRY CLUB-CITY OF VENTURA · 196 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 27.82 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 30.5 µg/L — RINCON WATER & ROAD WORKS · 25 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 19 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 27 µg/L — RINCON WATER & ROAD WORKS · 25 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 24.185 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 24 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 21.3145 µg/L 71% of the EPA limit 30 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 14.15 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 3/3 | SYR4 |
| Chromium | 12 µg/L 12% of the EPA limit 100 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 6 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 5.805 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 3/3 | SYR4 |
| Arsenic | 4.5 µg/L 45% of the EPA limit 10 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019
Highest in the city: 4.8 µg/L — SATICOY COUNTRY CLUB-CITY OF VENTURA · 196 people · 2018 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 4.495 pCi/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2015 | 2/3 | SYR4 |
| Nitrite | 0.7340 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 1/3 | SYR4 |
| Tetrachloroethylene | 0.6000 µg/L 12% of the EPA limit 5 µg/L Highest in the city: SATICOY COUNTRY CLUB-CITY OF VENTURA · 196 people · 2014 | 1/3 | SYR4 |
| Cadmium | 0.3000 µg/L 6% of the EPA limit 5 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 1/3 | SYR4 |
| Mercury | 0.0390 µg/L 2% of the EPA limit 2 µg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2019 | 1/3 | SYR4 |
| PFBS | 0.0031 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2023 | 1/3 | UCMR-5 |
| PFHXS | 0.0030 µg/L No EPA limit set Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2023 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: VENTURA WATER DEPARTMENT · 113,500 people · 2023 | 3/3 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Ventura
| Supplier | Population served |
|---|---|
| VENTURA WATER DEPARTMENT | 113,500 |
| SATICOY COUNTRY CLUB-CITY OF VENTURA | 196 |
| RINCON WATER & ROAD WORKS | 25 |
Frequently asked questions about Ventura tap water
Is Ventura tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Ventura. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Ventura?
3 public water suppliers report drinking-water monitoring for Ventura, California to the EPA. Each is listed above with its population served.
What contaminants are in Ventura's water?
The contaminants EPA monitoring detected in Ventura include Nitrate-Nitrite, Nitrate, Fluoride, Lead, Lithium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.