What was found in ZIP 95050
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 | 660000 µg/L 6600% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Nitrate | 6102 µg/L 61% of the EPA limit 10000 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Fluoride | 421.9999999999982 µg/L 11% of the EPA limit 4000 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Copper | 342.085 µg/L 26% of the EPA limit 1300 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Barium | 290 µg/L 14% of the EPA limit 2000 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| TTHM | 76.71249999999998 µg/L 96% of the EPA limit 80 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Chloroform | 58.526999999999994 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 51.115 µg/L 85% of the EPA limit 60 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 32.05999999999998 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 25.126499999999986 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019
Highest in the ZIP: 32 µg/L — CITY OF SANTA CLARA · 130,746 people · 2019 | 2/2 | SYR4 |
| Chromium | 27.199999999999996 µg/L 27% of the EPA limit 100 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 22.239999999999988 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019
Highest in the ZIP: 25 µg/L — CITY OF SANTA CLARA · 130,746 people · 2019 | 2/2 | SYR4 |
| Bromoform | 21.151999999999994 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019
Highest in the ZIP: 24 µg/L — CITY OF SANTA CLARA · 130,746 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 16.962 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019
Highest in the ZIP: 18 µg/L — CITY OF SANTA CLARA · 130,746 people · 2019 | 2/2 | SYR4 |
| Lead | 16.04 µg/L 107% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 12.619999999999994 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Lithium | 10 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2025
Highest in the ZIP: 11 µg/L — CITY OF SANTA CLARA · 130,746 people · 2025 | 2/2 | UCMR-5 |
| Selenium | 9 µg/L 18% of the EPA limit 50 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 6.880000000000001 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Arsenic | 5.5 µg/L 55% of the EPA limit 10 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| 1,1-Dichloroethylene | 5.459999999999999 µg/L 78% of the EPA limit 7 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 5.25 pCi/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| 1,1,1-Trichloroethane | 3.2 µg/L 1.6% of the EPA limit 200 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 2.715525 µg/L 9.1% of the EPA limit 30 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.3029999999999995 pCi/L 46% of the EPA limit 5 pCi/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.845 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 2/2 | SYR4 |
| Styrene | 0.6900 µg/L 0.7% of the EPA limit 100 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.2900 µg/L 4.8% of the EPA limit 6 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.2200 µg/L 0.1% of the EPA limit 400 µg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| Asbestos | 0.2000 MFL 2.9% of the EPA limit 7 MFL Main supplier: SAN JOSE WATER · 1,039,920 people · 2019 | 1/2 | SYR4 |
| PFOS | 0.0062 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2025 | 1/2 | UCMR-5 |
| PFHXS | 0.0055 µg/L No EPA limit set Main supplier: SAN JOSE WATER · 1,039,920 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SAN JOSE WATER · 1,039,920 people · 2025
Highest in the ZIP: 0.0027 mg/L — CITY OF SANTA CLARA · 130,746 people · 2025 | 2/2 | 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 95050
| Supplier | State | Population served |
|---|---|---|
| SAN JOSE WATER | CA | 1,039,920 |
| CITY OF SANTA CLARA | CA | 130,746 |
Frequently asked questions about ZIP 95050 tap water
Is the tap water in ZIP 95050 safe to drink?
EPA testing detected 33 contaminants across the water suppliers serving ZIP 95050. 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 95050?
2 public water suppliers report EPA drinking-water monitoring for ZIP 95050. Each is listed above with its population served.
What contaminants are in ZIP 95050's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.