What was found in ZIP 92258
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 | 830000 µg/L 8300% of the EPA limit, in the worst sample — 10000 µg/L | 1/1 | SYR4 |
| Nitrate | 1700 µg/L 17% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Fluoride | 940 µg/L 24% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Combined Uranium | 29.8 µg/L 99% of the EPA limit 30 µg/L | 1/1 | SYR4 |
| Chromium | 27 µg/L 27% of the EPA limit 100 µg/L | 1/1 | SYR4 |
| TTHM | 26.8 µg/L 34% of the EPA limit 80 µg/L | 1/1 | SYR4 |
| Dibromochloromethane | 9.5 µg/L No EPA limit set | 1/1 | SYR4 |
| Bromoform | 9.3 µg/L No EPA limit set | 1/1 | SYR4 |
| Bromodichloromethane | 5.7 µg/L No EPA limit set | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.7 µg/L 6.2% of the EPA limit 60 µg/L | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.8 µg/L No EPA limit set | 1/1 | SYR4 |
| Arsenic | 2.7 µg/L 27% of the EPA limit 10 µg/L | 1/1 | SYR4 |
| Chloroform | 2.3 µg/L No EPA limit set | 1/1 | SYR4 |
| Dichloroacetic Acid | 1.2 µg/L No EPA limit set | 1/1 | SYR4 |
| Dichloromethane | 1 µg/L 20% of the EPA limit 5 µg/L | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 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 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 92258
| Supplier | State | Population served |
|---|---|---|
| MISSION SPRINGS WD | CA | 43,484 |
Frequently asked questions about ZIP 92258 tap water
Is the tap water in ZIP 92258 safe to drink?
EPA testing detected 16 contaminants across the water suppliers serving ZIP 92258. 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 92258?
1 public water supplier report EPA drinking-water monitoring for ZIP 92258. Each is listed above with its population served.
What contaminants are in ZIP 92258's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Combined Uranium, Chromium, and others across this ZIP's suppliers. The full list with levels and sources is above.