What was found in ZIP 91745
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 | 580000 µg/L 5800% of the EPA limit, in the worst sample — 10000 µg/L | 5/7 | SYR4 |
| Nitrate | 22000 µg/L 220% of the EPA limit, in the worst sample — 10000 µg/L | 5/7 | SYR4 |
| Nitrite | 8100 µg/L 810% of the EPA limit, in the worst sample — 1000 µg/L | 2/7 | SYR4 |
| Fluoride | 1600 µg/L 40% of the EPA limit 4000 µg/L | 5/7 | SYR4 |
| Barium | 220 µg/L 11% of the EPA limit 2000 µg/L | 4/7 | SYR4 |
| Tetrachloroethylene | 220 µg/L 4400% of the EPA limit, in the worst sample — 5 µg/L | 4/7 | SYR4 |
| Trichloroethylene | 140 µg/L 2800% of the EPA limit, in the worst sample — 5 µg/L | 4/7 | SYR4 |
| TTHM | 110 µg/L 138% of the EPA limit, in the worst sample — 80 µg/L | 6/7 | SYR4 |
| 1,1-Dichloroethylene | 64 µg/L 914% of the EPA limit, in the worst sample — 7 µg/L | 3/7 | SYR4 |
| Chloroform | 63 µg/L No EPA limit set | 6/7 | SYR4 |
| Lithium | 54 µg/L No EPA limit set | 2/7 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 51 µg/L 85% of the EPA limit 60 µg/L | 6/7 | SYR4 |
| Combined Uranium | 41.72 µg/L 139% of the EPA limit, in the worst sample — 30 µg/L | 5/7 | SYR4 |
| Dibromochloromethane | 40 µg/L No EPA limit set | 6/7 | SYR4 |
| Bromodichloromethane | 32 µg/L No EPA limit set | 6/7 | SYR4 |
| Dichloroacetic Acid | 30.8 µg/L No EPA limit set | 4/7 | SYR4 |
| Bromoform | 25 µg/L No EPA limit set | 6/7 | SYR4 |
| trans-1,2-Dichloroethylene | 23 µg/L 23% of the EPA limit 100 µg/L | 3/7 | SYR4 |
| Trichloroacetic Acid | 20 µg/L No EPA limit set | 4/7 | SYR4 |
| Carbon Tetrachloride | 17 µg/L 340% of the EPA limit, in the worst sample — 5 µg/L | 3/7 | SYR4 |
| Chromium | 17 µg/L 17% of the EPA limit 100 µg/L | 1/7 | SYR4 |
| Dibromoacetic Acid | 14 µg/L No EPA limit set | 6/7 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 11 µg/L 183% of the EPA limit, in the worst sample — 6 µg/L | 1/7 | SYR4 |
| cis-1,2-Dichloroethylene | 6.1 µg/L 8.7% of the EPA limit 70 µg/L | 3/7 | SYR4 |
| Gross Beta Particle Activity | 5.8 pCi/L No EPA limit set | 2/7 | SYR4 |
| Selenium | 5 µg/L 10% of the EPA limit 50 µg/L | 1/7 | SYR4 |
| 1,1,2-Trichloroethane | 3.8 µg/L 76% of the EPA limit 5 µg/L | 1/7 | SYR4 |
| Arsenic | 3.8 µg/L 38% of the EPA limit 10 µg/L | 3/7 | SYR4 |
| 1,2-Dichloroethane | 3.7 µg/L 74% of the EPA limit 5 µg/L | 2/7 | SYR4 |
| Monochloroacetic Acid | 3.4 µg/L No EPA limit set | 2/7 | SYR4 |
| Dichloromethane | 2.4 µg/L 48% of the EPA limit 5 µg/L | 2/7 | SYR4 |
| Chlorobenzene | 1.4 µg/L 1.4% of the EPA limit 100 µg/L | 1/7 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set | 1/7 | SYR4 |
| Pentachlorophenol | 0.8500 µg/L 85% of the EPA limit 1 µg/L | 2/7 | SYR4 |
| Toluene | 0.5200 µg/L 0.1% of the EPA limit 1000 µg/L | 1/7 | SYR4 |
| Pfba | 0.0100 µg/L No EPA limit set | 3/7 | UCMR-5 |
| Pfpea | 0.0056 µg/L No EPA limit set | 2/7 | UCMR-5 |
| PFBS | 0.0036 µg/L No EPA limit set | 1/7 | UCMR-5 |
| Pfhxa | 0.0033 µg/L No EPA limit set | 1/7 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 7/7 | 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 91745
| Supplier | State | Population served |
|---|---|---|
| SAN GABRIEL VALLEY WATER CO.-EL MONTE | CA | 248,000 |
| SUBURBAN WATER SYSTEMS-SAN JOSE | CA | 168,843 |
| ROWLAND WATER DISTRICT | CA | 56,100 |
| LA PUENTE VALLEY CWD | CA | 8,243 |
| CITY OF INDUSTRY WATERWORKS SYSTEMS | CA | 6,158 |
| SUBURBAN WATER SYSTEMS-GLENDORA | CA | 5,249 |
| CSA 70 W-3 HACIENDA | CA | 611 |
Frequently asked questions about ZIP 91745 tap water
Is the tap water in ZIP 91745 safe to drink?
EPA testing detected 40 contaminants across the water suppliers serving ZIP 91745. 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 91745?
7 public water suppliers report EPA drinking-water monitoring for ZIP 91745. Each is listed above with its population served.
What contaminants are in ZIP 91745's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Nitrite, Fluoride, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.