What was found in ZIP 91381
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 | 6102 µg/L 61% of the EPA limit 10000 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 5600 µg/L 56% of the EPA limit 10000 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Fluoride | 819 µg/L 20% of the EPA limit 4000 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Copper | 150 µg/L 12% of the EPA limit 1300 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Barium | 118 µg/L 5.9% of the EPA limit 2000 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Lithium | 53.1 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| TTHM | 46 µg/L 57% of the EPA limit 80 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Chromium | 34 µg/L 34% of the EPA limit 100 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Bromoform | 25.05 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 18.1 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 10.45 µg/L 17% of the EPA limit 60 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 10 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Selenium | 8.81 µg/L 18% of the EPA limit 50 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 8.493 µg/L 28% of the EPA limit 30 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 6.8 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 6.72 pCi/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Chloroform | 5.2 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 4.6 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Arsenic | 4.47 µg/L 45% of the EPA limit 10 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 3.575 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 2.42 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Dichloromethane | 1.9 µg/L 38% of the EPA limit 5 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Picloram | 1.1 µg/L 0.2% of the EPA limit 500 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2018 | 1/1 | SYR4 |
| Toluene | 0.9755 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 0.8760 µg/L 18% of the EPA limit 5 µg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0226 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| PFOA | 0.0169 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0142 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| Pfba | 0.0133 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| PFHXS | 0.0076 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| PFOS | 0.0075 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0069 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| Pfhpa | 0.0063 µg/L No EPA limit set Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SANTA CLARITA VALLEY WATER AGENCY · 294,090 people · 2025 | 1/1 | 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 91381
| Supplier | State | Population served |
|---|---|---|
| SANTA CLARITA VALLEY WATER AGENCY | CA | 294,090 |
Frequently asked questions about ZIP 91381 tap water
Is the tap water in ZIP 91381 safe to drink?
EPA testing detected 34 contaminants across the water suppliers serving ZIP 91381. 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 91381?
1 public water supplier report EPA drinking-water monitoring for ZIP 91381. Each is listed above with its population served.
What contaminants are in ZIP 91381's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.