What was found in ZIP 94061
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 |
|---|---|---|---|
| Fluoride | 377.5 µg/L 9.4% of the EPA limit 4000 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Barium | 107 µg/L 5.4% of the EPA limit 2000 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Nitrate | 91.756 µg/L 0.9% of the EPA limit 10000 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| TTHM | 61.946 µg/L 77% of the EPA limit 80 µg/L Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019
Highest in the ZIP: 71.02 µg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 2/2 | SYR4 |
| Chloroform | 61.3085 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 53.43 µg/L 89% of the EPA limit 60 µg/L Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019
Highest in the ZIP: 54 µg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.4 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019
Highest in the ZIP: 33.732 µg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 30.165 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019
Highest in the ZIP: 32 µg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 2/2 | SYR4 |
| Copper | 27.984 µg/L 2.2% of the EPA limit 1300 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 24.175 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 3.966 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019
Highest in the ZIP: 15.931 µg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 2/2 | SYR4 |
| Chromium | 7.2165 µg/L 7.2% of the EPA limit 100 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.7 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019
Highest in the ZIP: 6.2 µg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 1.25 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019
Highest in the ZIP: 4.61 µg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 2/2 | SYR4 |
| Selenium | 3.8644 µg/L 7.7% of the EPA limit 50 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 3.67 µg/L No EPA limit set Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2019 | 2/2 | SYR4 |
| Arsenic | 1.73185 µg/L 17% of the EPA limit 10 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.3 µg/L No EPA limit set Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 1.03332 µg/L 3.4% of the EPA limit 30 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Lead | 0.4694 µg/L 3.1% of the EPA limit 15 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 0.2215 µg/L 3.7% of the EPA limit 6 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Cadmium | 0.0280 µg/L 0.6% of the EPA limit 5 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Mercury | 0.0195 µg/L 1% of the EPA limit 2 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Beryllium, Total | 0.0118 µg/L 0.3% of the EPA limit 4 µg/L Highest in the ZIP: CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF REDWOOD CITY · 92,819 people · 2024
Highest in the ZIP: 0.0040 mg/L — CALIFORNIA WATER SERVICE - BEAR GULCH · 61,431 people · 2024 | 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 94061
| Supplier | State | Population served |
|---|---|---|
| CITY OF REDWOOD CITY | CA | 92,819 |
| CALIFORNIA WATER SERVICE - BEAR GULCH | CA | 61,431 |
Frequently asked questions about ZIP 94061 tap water
Is the tap water in ZIP 94061 safe to drink?
EPA testing detected 25 contaminants across the water suppliers serving ZIP 94061. 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 94061?
2 public water suppliers report EPA drinking-water monitoring for ZIP 94061. Each is listed above with its population served.
What contaminants are in ZIP 94061's water?
EPA monitoring detected Fluoride, Barium, Nitrate, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.