What was found in ZIP 92860
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 9718 µg/L 97% of the EPA limit 10000 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2019 | 1/2 | SYR4 |
| Fluoride | 3100 µg/L 78% of the EPA limit 4000 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 2690 µg/L 27% of the EPA limit 10000 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2017 | 1/2 | SYR4 |
| Barium | 168 µg/L 8.4% of the EPA limit 2000 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2017 | 1/2 | SYR4 |
| TTHM | 49.69 µg/L 62% of the EPA limit 80 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2019
Highest in the ZIP: 109.94 µg/L — CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 2/2 | SYR4 |
| Bromoform | 31.04 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019
Highest in the ZIP: 80.5 µg/L — CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 2/2 | SYR4 |
| Lithium | 35.9 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 1/2 | UCMR-5 |
| Dibromochloromethane | 13.98 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019
Highest in the ZIP: 23.595 µg/L — CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 18.774 µg/L 63% of the EPA limit 30 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2017 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 9.9 µg/L 17% of the EPA limit 60 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2019
Highest in the ZIP: 15.385 µg/L — CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 2/2 | SYR4 |
| Arsenic | 15 µg/L 150% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 12 pCi/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2012 | 1/2 | SYR4 |
| Dibromoacetic Acid | 9.18 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019
Highest in the ZIP: 11.985 µg/L — CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 4.58 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019
Highest in the ZIP: 6.6 µg/L — CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 5.355 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019
Highest in the ZIP: 5.75 µg/L — CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 2/2 | SYR4 |
| Chloroform | 5.115 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 2.95 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 2.48 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.5 µg/L No EPA limit set Highest in the ZIP: CALIFORNIA REHABILITATION CENTER - NORCO · 4,300 people · 2019 | 1/2 | SYR4 |
| Benzene | 0.9520 µg/L 19% of the EPA limit 5 µg/L Main supplier: NORCO, CITY OF · 25,068 people · 2018 | 1/2 | SYR4 |
| PFOS | 0.0314 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 1/2 | UCMR-5 |
| Pfba | 0.0179 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 1/2 | UCMR-5 |
| PFHXS | 0.0138 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 2/2 | UCMR-5 |
| PFOA | 0.0137 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 1/2 | UCMR-5 |
| PFBS | 0.0122 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0119 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0073 µg/L No EPA limit set Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NORCO, CITY OF · 25,068 people · 2024 | 2/2 | 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 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 92860
| Supplier | State | Population served |
|---|---|---|
| NORCO, CITY OF | CA | 25,068 |
| CALIFORNIA REHABILITATION CENTER - NORCO | CA | 4,300 |
Frequently asked questions about ZIP 92860 tap water
Is the tap water in ZIP 92860 safe to drink?
EPA testing detected 28 contaminants across the water suppliers serving ZIP 92860. 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 92860?
2 public water suppliers report EPA drinking-water monitoring for ZIP 92860. Each is listed above with its population served.
What contaminants are in ZIP 92860's water?
EPA monitoring detected Nitrate, Fluoride, Nitrate-Nitrite, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.