What was found in ZIP 90270
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 | 1000000 µg/L 10000% of the EPA limit, in the worst sample — 10000 µg/L | 1/3 | SYR4 |
| Nitrate | 3842 µg/L 38% of the EPA limit 10000 µg/L | 3/3 | SYR4 |
| Fluoride | 600 µg/L 15% of the EPA limit 4000 µg/L | 3/3 | SYR4 |
| Barium | 190 µg/L 9.5% of the EPA limit 2000 µg/L | 3/3 | SYR4 |
| TTHM | 109.9 µg/L 137% of the EPA limit, in the worst sample — 80 µg/L | 3/3 | SYR4 |
| Lead | 60 µg/L 400% of the EPA limit, in the worst sample — 15 µg/L | 1/3 | SYR4 |
| Dibromochloromethane | 42.7 µg/L No EPA limit set | 3/3 | SYR4 |
| Bromoform | 40.8 µg/L No EPA limit set | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 26.8 µg/L 45% of the EPA limit 60 µg/L | 3/3 | SYR4 |
| Lithium | 21.8 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Chloroform | 21.1 µg/L No EPA limit set | 3/3 | SYR4 |
| Bromodichloromethane | 19 µg/L No EPA limit set | 3/3 | SYR4 |
| Dichloroacetic Acid | 16.6 µg/L No EPA limit set | 3/3 | SYR4 |
| Dibromoacetic Acid | 15.9 µg/L No EPA limit set | 3/3 | SYR4 |
| Trichloroacetic Acid | 6.4 µg/L No EPA limit set | 3/3 | SYR4 |
| Trichloroethylene | 5.5 µg/L 110% of the EPA limit, in the worst sample — 5 µg/L | 1/3 | SYR4 |
| Combined Uranium | 3.278 µg/L 11% of the EPA limit 30 µg/L | 2/3 | SYR4 |
| Monochloroacetic Acid | 3.1 µg/L No EPA limit set | 1/3 | SYR4 |
| Dichloromethane | 1.1 µg/L 22% of the EPA limit 5 µg/L | 1/3 | SYR4 |
| PFOS | 0.0264 µg/L No EPA limit set | 3/3 | UCMR-5 |
| PFOA | 0.0073 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFHXS | 0.0061 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 3/3 | 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 90270
| Supplier | State | Population served |
|---|---|---|
| MAYWOOD MUTUAL WATER CO. #2 | CA | 6,349 |
| MAYWOOD MUTUAL WATER CO. #3 | CA | 6,059 |
| MAYWOOD MUTUAL WATER CO. #1 | CA | 5,500 |
Frequently asked questions about ZIP 90270 tap water
Is the tap water in ZIP 90270 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 90270. 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 90270?
3 public water suppliers report EPA drinking-water monitoring for ZIP 90270. Each is listed above with its population served.
What contaminants are in ZIP 90270's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.