What was found in ZIP 91361
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 400000 µg/L 4000% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2013 | 1/4 | SYR4 |
| Fluoride | 838 µg/L 21% of the EPA limit 4000 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Nitrate | 804.2099999999998 µg/L 8% of the EPA limit 10000 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Nitrite | 500 µg/L 50% of the EPA limit 1000 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| TTHM | 63 µg/L 79% of the EPA limit 80 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 5.449999999999999 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019
Highest in the ZIP: 32.3 µg/L — CAL AMERICAN WATER CO · 66,809 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 27.799999999999955 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 4/4 | SYR4 |
| Barium | 26 µg/L 1.3% of the EPA limit 2000 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Bromoform | 19 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 4/4 | SYR4 |
| Lithium | 15 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2024
Highest in the ZIP: 17.9 µg/L — CAL AMERICAN WATER CO · 66,809 people · 2024 | 3/4 | UCMR-5 |
| Bromodichloromethane | 16.14999999999992 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 14.699999999999989 µg/L 24% of the EPA limit 60 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019
Highest in the ZIP: 16 µg/L — CALIFORNIA WATER SERVICE CO - WESTLAKE · 19,533 people · 2019 | 4/4 | SYR4 |
| Gross Beta Particle Activity | 12 pCi/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2014 | 1/4 | SYR4 |
| Copper | 10 µg/L 0.8% of the EPA limit 1300 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Chloroform | 10 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 6.629999999999999 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019
Highest in the ZIP: 9.659999999999995 µg/L — CALIFORNIA WATER SERVICE CO - WESTLAKE · 19,533 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 7.5 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019
Highest in the ZIP: 8.819999999999993 µg/L — CALIFORNIA WATER SERVICE CO - WESTLAKE · 19,533 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 4.969999999999999 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019
Highest in the ZIP: 5.91 µg/L — CALIFORNIA WATER SERVICE CO - WESTLAKE · 19,533 people · 2019 | 4/4 | SYR4 |
| Combined Uranium | 4.193 µg/L 14% of the EPA limit 30 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2015 | 1/4 | SYR4 |
| Monobromoacetic Acid | 3.619999999999999 µg/L No EPA limit set Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 4/4 | SYR4 |
| Arsenic | 2.95 µg/L 30% of the EPA limit 10 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Selenium | 0.5700 µg/L 1.1% of the EPA limit 50 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Chromium | 0.1200 µg/L 0.1% of the EPA limit 100 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Antimony, Total | 0.0830 µg/L 1.4% of the EPA limit 6 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0620 µg/L 0.4% of the EPA limit 15 µg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LAS VIRGENES MWD · 72,602 people · 2024
Highest in the ZIP: 0.0030 mg/L — CALIFORNIA WATER SERVICE CO - WESTLAKE · 19,533 people · 2024 | 4/4 | 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.
Water suppliers serving ZIP 91361
| Supplier | State | Population served |
|---|---|---|
| LAS VIRGENES MWD | CA | 72,602 |
| CAL AMERICAN WATER CO | CA | 66,809 |
| CITY OF THOUSAND OAKS WATER DEPARTMENT | CA | 53,157 |
| CALIFORNIA WATER SERVICE CO - WESTLAKE | CA | 19,533 |
Frequently asked questions about ZIP 91361 tap water
Is the tap water in ZIP 91361 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 91361. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 91361?
4 public water suppliers report EPA drinking-water monitoring for ZIP 91361. Each is listed above with its population served.
What contaminants are in ZIP 91361's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Nitrate, Nitrite, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.