What was found in ZIP 94568
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 | 540000 µg/L 5400% of the EPA limit, in the worst sample — 10000 µg/L | 1/2 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L | 1/2 | SYR4 |
| Nitrate | 549.18 µg/L 5.5% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| TTHM | 24.3 µg/L 30% of the EPA limit 80 µg/L | 1/2 | SYR4 |
| Chloroform | 13.2 µg/L No EPA limit set | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 13 µg/L 22% of the EPA limit 60 µg/L | 1/2 | SYR4 |
| Chromium | 12 µg/L 12% of the EPA limit 100 µg/L | 1/2 | SYR4 |
| Bromodichloromethane | 7.7 µg/L No EPA limit set | 1/2 | SYR4 |
| Lead | 6.6 µg/L 44% of the EPA limit 15 µg/L | 1/2 | SYR4 |
| Dibromoacetic Acid | 6.2 µg/L No EPA limit set | 1/2 | SYR4 |
| Dichloroacetic Acid | 5 µg/L No EPA limit set | 1/2 | SYR4 |
| Arsenic | 4.6 µg/L 46% of the EPA limit 10 µg/L | 1/2 | SYR4 |
| Gross Beta Particle Activity | 4 pCi/L No EPA limit set | 1/2 | SYR4 |
| Dibromochloromethane | 3.4 µg/L No EPA limit set | 1/2 | SYR4 |
| Trichloroacetic Acid | 2.3 µg/L No EPA limit set | 1/2 | SYR4 |
| Bromoform | 2.01 µg/L No EPA limit set | 1/2 | SYR4 |
| Combined Uranium | 1.49 µg/L 5% of the EPA limit 30 µg/L | 1/2 | SYR4 |
| Asbestos | 1.2 MFL 17% of the EPA limit 7 MFL | 1/2 | SYR4 |
| Pfba | 0.0052 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 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 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 94568
| Supplier | State | Population served |
|---|---|---|
| EAST BAY MUD | CA | 1,442,800 |
| DUBLIN SAN RAMON SERVICES DISTRICT | CA | 98,776 |
Frequently asked questions about ZIP 94568 tap water
Is the tap water in ZIP 94568 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 94568. 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 94568?
2 public water suppliers report EPA drinking-water monitoring for ZIP 94568. Each is listed above with its population served.
What contaminants are in ZIP 94568's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Nitrate, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.