What was found in ZIP 94062
The highest level seen across the suppliers serving this ZIP, 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, in the worst sample — 10000 µg/L | 1/4 | SYR4 |
| Nitrate | 21400 µg/L 214% of the EPA limit, in the worst sample — 10000 µg/L | 2/4 | SYR4 |
| Fluoride | 900 µg/L 23% of the EPA limit 4000 µg/L | 2/4 | SYR4 |
| Nitrite | 400 µg/L 40% of the EPA limit 1000 µg/L | 1/4 | SYR4 |
| Barium | 178.25 µg/L 8.9% of the EPA limit 2000 µg/L | 2/4 | SYR4 |
| TTHM | 124.2 µg/L 155% of the EPA limit, in the worst sample — 80 µg/L | 4/4 | SYR4 |
| Chloroform | 101.1 µg/L No EPA limit set | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 81.7 µg/L 136% of the EPA limit, in the worst sample — 60 µg/L | 3/4 | SYR4 |
| Dichloroacetic Acid | 52.3 µg/L No EPA limit set | 3/4 | SYR4 |
| Bromoform | 51.19 µg/L No EPA limit set | 3/4 | SYR4 |
| Trichloroacetic Acid | 33 µg/L No EPA limit set | 3/4 | SYR4 |
| Copper | 32.051 µg/L 2.5% of the EPA limit 1300 µg/L | 1/4 | SYR4 |
| Monochloroacetic Acid | 30 µg/L No EPA limit set | 3/4 | SYR4 |
| Chromium | 26.2 µg/L 26% of the EPA limit 100 µg/L | 2/4 | SYR4 |
| Bromodichloromethane | 19.94 µg/L No EPA limit set | 4/4 | SYR4 |
| Dibromochloromethane | 9.75 µg/L No EPA limit set | 3/4 | SYR4 |
| Dibromoacetic Acid | 6.2 µg/L No EPA limit set | 3/4 | SYR4 |
| Selenium | 4.084 µg/L 8.2% of the EPA limit 50 µg/L | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 3.8 pCi/L 76% of the EPA limit 5 pCi/L | 1/4 | SYR4 |
| Arsenic | 3 µg/L 30% of the EPA limit 10 µg/L | 2/4 | SYR4 |
| Monobromoacetic Acid | 1.3 µg/L No EPA limit set | 2/4 | SYR4 |
| Combined Uranium | 1.04747 µg/L 3.5% of the EPA limit 30 µg/L | 1/4 | SYR4 |
| Lead | 0.5780 µg/L 3.9% of the EPA limit 15 µg/L | 1/4 | SYR4 |
| Antimony, Total | 0.2410 µg/L 4% of the EPA limit 6 µg/L | 1/4 | SYR4 |
| Cadmium | 0.0380 µg/L 0.8% of the EPA limit 5 µg/L | 1/4 | SYR4 |
| Mercury | 0.0210 µg/L 1.1% of the EPA limit 2 µg/L | 1/4 | SYR4 |
| Beryllium, Total | 0.0130 µg/L 0.3% of the EPA limit 4 µg/L | 1/4 | SYR4 |
| Lead | 0.0058 mg/L 39% of the EPA limit 0.0150 mg/L | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 94062
| Supplier | State | Population served |
|---|---|---|
| CITY OF REDWOOD CITY | CA | 92,819 |
| CALIFORNIA WATER SERVICE - BEAR GULCH | CA | 61,431 |
| CALIFORNIA WATER SERVICE - SAN CARLOS | CA | 35,344 |
| SAN FRANCISCO REGIONAL WATER SYSTEM | CA | 600 |
Frequently asked questions about ZIP 94062 tap water
Is the tap water in ZIP 94062 safe to drink?
EPA testing detected 28 contaminants across the water suppliers serving ZIP 94062. 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 94062?
4 public water suppliers report EPA drinking-water monitoring for ZIP 94062. Each is listed above with its population served.
What contaminants are in ZIP 94062's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Nitrite, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.