What was found in ZIP 94586
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 | 286420 µg/L 2864% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| Nitrate | 21400 µg/L 214% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| Fluoride | 819.5 µg/L 20% of the EPA limit 4000 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| Nitrite | 400 µg/L 40% of the EPA limit 1000 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| Barium | 166.8 µg/L 8.3% of the EPA limit 2000 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| TTHM | 38 µg/L 48% of the EPA limit 80 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2018 | 1/1 | SYR4 |
| Chloroform | 32 µg/L No EPA limit set Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2018 | 1/1 | SYR4 |
| Chromium | 25.78 µg/L 26% of the EPA limit 100 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 5.5 µg/L No EPA limit set Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2018 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 3.8 pCi/L 76% of the EPA limit 5 pCi/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.976 µg/L 30% of the EPA limit 10 µg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SAN FRANCISCO REGIONAL WATER SYSTEM · 600 people · 2024 | 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 94586
| Supplier | State | Population served |
|---|---|---|
| SAN FRANCISCO REGIONAL WATER SYSTEM | CA | 600 |
Frequently asked questions about ZIP 94586 tap water
Is the tap water in ZIP 94586 safe to drink?
EPA testing detected 12 contaminants across the water suppliers serving ZIP 94586. 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 94586?
1 public water supplier report EPA drinking-water monitoring for ZIP 94586. Each is listed above with its population served.
What contaminants are in ZIP 94586'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.