What was found in Montebello's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 3900 µg/L 39% of the EPA limit 10000 µg/L | 4/4 | SYR4 |
| Nitrate-Nitrite | 2000 µg/L 20% of the EPA limit 10000 µg/L | 2/4 | SYR4 |
| Fluoride | 950 µg/L 24% of the EPA limit 4000 µg/L | 4/4 | SYR4 |
| Barium | 110 µg/L 5.5% of the EPA limit 2000 µg/L | 1/4 | SYR4 |
| Lithium | 65.7 µg/L No EPA limit set | 3/4 | UCMR-5 |
| TTHM | 58.8 µg/L 74% of the EPA limit 80 µg/L | 4/4 | SYR4 |
| Tetrachloroethylene | 40.81 µg/L 816% of the EPA limit, in the worst sample — 5 µg/L | 2/4 | SYR4 |
| Trichloroethylene | 34 µg/L 680% of the EPA limit, in the worst sample — 5 µg/L | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28 µg/L 47% of the EPA limit 60 µg/L | 4/4 | SYR4 |
| Chloroform | 25 µg/L No EPA limit set | 3/4 | SYR4 |
| Bromoform | 21 µg/L No EPA limit set | 4/4 | SYR4 |
| Bromodichloromethane | 18.84 µg/L No EPA limit set | 4/4 | SYR4 |
| Dibromochloromethane | 18.51 µg/L No EPA limit set | 4/4 | SYR4 |
| Dichloroacetic Acid | 16 µg/L No EPA limit set | 2/4 | SYR4 |
| Arsenic | 12 µg/L 120% of the EPA limit, in the worst sample — 10 µg/L | 3/4 | SYR4 |
| Trichloroacetic Acid | 8.7 µg/L No EPA limit set | 2/4 | SYR4 |
| Dibromoacetic Acid | 7.6 µg/L No EPA limit set | 4/4 | SYR4 |
| Monobromoacetic Acid | 7.1 µg/L No EPA limit set | 1/4 | SYR4 |
| 1,1-Dichloroethylene | 6.3 µg/L 90% of the EPA limit 7 µg/L | 1/4 | SYR4 |
| Monochloroacetic Acid | 5.2 µg/L No EPA limit set | 1/4 | SYR4 |
| Combined Uranium | 3.725 µg/L 12% of the EPA limit 30 µg/L | 2/4 | SYR4 |
| Dichloromethane | 0.6900 µg/L 14% of the EPA limit 5 µg/L | 1/4 | SYR4 |
| 1,1,2-Trichloroethane | 0.5100 µg/L 10% of the EPA limit 5 µg/L | 1/4 | SYR4 |
| PFOS | 0.0530 µg/L No EPA limit set | 2/4 | UCMR-5 |
| Pfpea | 0.0174 µg/L No EPA limit set | 3/4 | UCMR-5 |
| PFOA | 0.0160 µg/L No EPA limit set | 3/4 | UCMR-5 |
| Lead | 0.0141 mg/L 94% of the EPA limit 0.0150 mg/L | 4/4 | LCR |
| Pfba | 0.0140 µg/L No EPA limit set | 2/4 | UCMR-5 |
| Pfhxa | 0.0136 µg/L No EPA limit set | 3/4 | UCMR-5 |
| PFBS | 0.0110 µg/L No EPA limit set | 3/4 | UCMR-5 |
| PFHXS | 0.0086 µg/L No EPA limit set | 1/4 | UCMR-5 |
| Pfhpa | 0.0051 µg/L No EPA limit set | 2/4 | UCMR-5 |
| Pfda | 0.0037 µg/L No EPA limit set | 1/4 | UCMR-5 |
Water suppliers serving Montebello
| Supplier | Population served |
|---|---|
| MONTEBELLO LAND & WATER CO. | 26,554 |
| SOUTH MONTEBELLO IRRIGATION DIST. | 15,021 |
| SAN GABRIEL VALLEY WATER CO-MONTEBELLO 2 | 7,330 |
| COMMERCE-CITY, WATER DEPT. | 4,205 |
Frequently asked questions about Montebello tap water
Is Montebello tap water safe to drink?
EPA testing detected 33 contaminants in the water serving Montebello. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Montebello?
4 public water suppliers report drinking-water monitoring for Montebello, California to the EPA. Each is listed above with its population served.
What contaminants are in Montebello's water?
The contaminants EPA monitoring detected in Montebello include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Lithium. The full list, with the highest level found and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.