What was found in ZIP 91007
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 | 790000 µg/L 7900% of the EPA limit, in the worst sample — 10000 µg/L | 2/3 | SYR4 |
| Nitrate | 11752 µg/L 118% of the EPA limit, in the worst sample — 10000 µg/L | 3/3 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L | 3/3 | SYR4 |
| Combined Uranium | 40.23 µg/L 134% of the EPA limit, in the worst sample — 30 µg/L | 3/3 | SYR4 |
| Trichloroethylene | 20 µg/L 400% of the EPA limit, in the worst sample — 5 µg/L | 3/3 | SYR4 |
| TTHM | 14 µg/L 18% of the EPA limit 80 µg/L | 3/3 | SYR4 |
| Chromium | 12 µg/L 12% of the EPA limit 100 µg/L | 2/3 | SYR4 |
| Tetrachloroethylene | 9.2 µg/L 184% of the EPA limit, in the worst sample — 5 µg/L | 3/3 | SYR4 |
| Bromoform | 7.7 µg/L No EPA limit set | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.5 µg/L 9.2% of the EPA limit 60 µg/L | 3/3 | SYR4 |
| Dibromochloromethane | 4.3 µg/L No EPA limit set | 3/3 | SYR4 |
| Trichloroacetic Acid | 4.1 µg/L No EPA limit set | 1/3 | SYR4 |
| Carbon Tetrachloride | 3.5 µg/L 70% of the EPA limit 5 µg/L | 1/3 | SYR4 |
| Chloroform | 3.4 µg/L No EPA limit set | 2/3 | SYR4 |
| Dichloromethane | 3.4 µg/L 68% of the EPA limit 5 µg/L | 1/3 | SYR4 |
| Arsenic | 3.2 µg/L 32% of the EPA limit 10 µg/L | 1/3 | SYR4 |
| Dichloroacetic Acid | 2.6 µg/L No EPA limit set | 1/3 | SYR4 |
| Monochloroacetic Acid | 2.6 µg/L No EPA limit set | 1/3 | SYR4 |
| 1,1-Dichloroethylene | 2.3 µg/L 33% of the EPA limit 7 µg/L | 1/3 | SYR4 |
| Bromodichloromethane | 2.3 µg/L No EPA limit set | 3/3 | SYR4 |
| Dibromoacetic Acid | 2.1 µg/L No EPA limit set | 3/3 | SYR4 |
| trans-1,2-Dichloroethylene | 0.5300 µg/L 0.5% of the EPA limit 100 µg/L | 1/3 | SYR4 |
| PFOS | 0.0220 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFHXS | 0.0070 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFOA | 0.0055 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% 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 91007
| Supplier | State | Population served |
|---|---|---|
| GSWC-SOUTH ARCADIA | CA | 27,072 |
| SUNNY SLOPE WATER CO. | CA | 25,252 |
| CAL-AM WATER COMPANY - EAST PASADENA | CA | 9,949 |
Frequently asked questions about ZIP 91007 tap water
Is the tap water in ZIP 91007 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 91007. 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 91007?
3 public water suppliers report EPA drinking-water monitoring for ZIP 91007. Each is listed above with its population served.
What contaminants are in ZIP 91007's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Combined Uranium, Trichloroethylene, and others across this ZIP's suppliers. The full list with levels and sources is above.