What was found in ZIP 92501
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 | 1/2 | SYR4 |
| Nitrate | 17000 µg/L 170% of the EPA limit, in the worst sample — 10000 µg/L | 1/2 | SYR4 |
| Fluoride | 1300 µg/L 33% of the EPA limit 4000 µg/L | 1/2 | SYR4 |
| Copper | 140 µg/L 11% of the EPA limit 1300 µg/L | 1/2 | SYR4 |
| Combined Uranium | 77.48 µg/L 258% of the EPA limit, in the worst sample — 30 µg/L | 1/2 | SYR4 |
| Barium | 70 µg/L 3.5% of the EPA limit 2000 µg/L | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 52 µg/L 87% of the EPA limit 60 µg/L | 1/2 | SYR4 |
| TTHM | 45 µg/L 56% of the EPA limit 80 µg/L | 2/2 | SYR4 |
| Monochloroacetic Acid | 44 µg/L No EPA limit set | 1/2 | SYR4 |
| Trichloroethylene | 27 µg/L 540% of the EPA limit, in the worst sample — 5 µg/L | 1/2 | SYR4 |
| Arsenic | 20 µg/L 200% of the EPA limit, in the worst sample — 10 µg/L | 1/2 | SYR4 |
| Chloroform | 19 µg/L No EPA limit set | 2/2 | SYR4 |
| Dibromochloromethane | 17 µg/L No EPA limit set | 2/2 | SYR4 |
| Bromodichloromethane | 16 µg/L No EPA limit set | 2/2 | SYR4 |
| Lithium | 16 µg/L No EPA limit set | 2/2 | UCMR-5 |
| Bromoform | 15 µg/L No EPA limit set | 2/2 | SYR4 |
| Gross Beta Particle Activity | 15 pCi/L No EPA limit set | 1/2 | SYR4 |
| Chromium | 14 µg/L 14% of the EPA limit 100 µg/L | 1/2 | SYR4 |
| Lead | 8.5 µg/L 57% of the EPA limit 15 µg/L | 1/2 | SYR4 |
| Trichloroacetic Acid | 7.9 µg/L No EPA limit set | 1/2 | SYR4 |
| Dichloroacetic Acid | 7.7 µg/L No EPA limit set | 1/2 | SYR4 |
| Dibromoacetic Acid | 5.7 µg/L No EPA limit set | 2/2 | SYR4 |
| Picloram | 5.1 µg/L 1% of the EPA limit 500 µg/L | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 4.5 pCi/L 90% of the EPA limit 5 pCi/L | 1/2 | SYR4 |
| Monobromoacetic Acid | 4.1 µg/L No EPA limit set | 1/2 | SYR4 |
| 1,1-Dichloroethylene | 2.7 µg/L 39% of the EPA limit 7 µg/L | 1/2 | SYR4 |
| Dichloromethane | 2.4 µg/L 48% of the EPA limit 5 µg/L | 1/2 | SYR4 |
| Tetrachloroethylene | 1.2 µg/L 24% of the EPA limit 5 µg/L | 1/2 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.5700 µg/L 285% of the EPA limit, in the worst sample — 0.2000 µg/L | 1/2 | SYR4 |
| Pfpea | 0.0067 µg/L No EPA limit set | 2/2 | UCMR-5 |
| Pfhxa | 0.0041 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFOS | 0.0040 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFHXS | 0.0034 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L | 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 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 92501
| Supplier | State | Population served |
|---|---|---|
| RIVERSIDE, CITY OF | CA | 298,398 |
| WESTERN MWD | CA | 86,062 |
Frequently asked questions about ZIP 92501 tap water
Is the tap water in ZIP 92501 safe to drink?
EPA testing detected 35 contaminants across the water suppliers serving ZIP 92501. 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 92501?
2 public water suppliers report EPA drinking-water monitoring for ZIP 92501. Each is listed above with its population served.
What contaminants are in ZIP 92501's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, Combined Uranium, and others across this ZIP's suppliers. The full list with levels and sources is above.