What was found in ZIP 92879
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 | 3/4 | SYR4 |
| Nitrate | 58760 µg/L 588% of the EPA limit, in the worst sample — 10000 µg/L | 3/4 | SYR4 |
| Fluoride | 4600 µg/L 115% of the EPA limit, in the worst sample — 4000 µg/L | 3/4 | SYR4 |
| Copper | 480 µg/L 37% of the EPA limit 1300 µg/L | 2/4 | SYR4 |
| Barium | 460 µg/L 23% of the EPA limit 2000 µg/L | 3/4 | SYR4 |
| TTHM | 110 µg/L 138% of the EPA limit, in the worst sample — 80 µg/L | 4/4 | SYR4 |
| Nitrite | 100 µg/L 10% of the EPA limit 1000 µg/L | 1/4 | SYR4 |
| Combined Uranium | 77.48 µg/L 258% of the EPA limit, in the worst sample — 30 µg/L | 3/4 | SYR4 |
| Lithium | 55.1 µg/L No EPA limit set | 4/4 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 52 µg/L 87% of the EPA limit 60 µg/L | 3/4 | SYR4 |
| Monochloroacetic Acid | 44 µg/L No EPA limit set | 3/4 | SYR4 |
| Bromodichloromethane | 39 µg/L No EPA limit set | 4/4 | SYR4 |
| Arsenic | 37 µg/L 370% of the EPA limit, in the worst sample — 10 µg/L | 3/4 | SYR4 |
| Bromoform | 36 µg/L No EPA limit set | 4/4 | SYR4 |
| Selenium | 35 µg/L 70% of the EPA limit 50 µg/L | 2/4 | SYR4 |
| Dibromochloromethane | 34 µg/L No EPA limit set | 4/4 | SYR4 |
| Chloroform | 33 µg/L No EPA limit set | 4/4 | SYR4 |
| Trichloroethylene | 27 µg/L 540% of the EPA limit, in the worst sample — 5 µg/L | 2/4 | SYR4 |
| Dichloroacetic Acid | 19 µg/L No EPA limit set | 3/4 | SYR4 |
| Gross Beta Particle Activity | 15 pCi/L No EPA limit set | 2/4 | SYR4 |
| Chromium | 14 µg/L 14% of the EPA limit 100 µg/L | 3/4 | SYR4 |
| Trichloroacetic Acid | 13 µg/L No EPA limit set | 3/4 | SYR4 |
| Dibromoacetic Acid | 11 µg/L No EPA limit set | 4/4 | SYR4 |
| Lead | 8.5 µg/L 57% of the EPA limit 15 µg/L | 2/4 | SYR4 |
| Monobromoacetic Acid | 7.7 µg/L No EPA limit set | 3/4 | SYR4 |
| Picloram | 5.1 µg/L 1% of the EPA limit 500 µg/L | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 4.5 pCi/L 90% of the EPA limit 5 pCi/L | 1/4 | SYR4 |
| 1,1-Dichloroethylene | 2.7 µg/L 39% of the EPA limit 7 µg/L | 1/4 | SYR4 |
| Dichloromethane | 2.4 µg/L 48% of the EPA limit 5 µg/L | 2/4 | SYR4 |
| Tetrachloroethylene | 1.2 µg/L 24% of the EPA limit 5 µg/L | 2/4 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.5700 µg/L 285% of the EPA limit, in the worst sample — 0.2000 µg/L | 2/4 | SYR4 |
| Pfba | 0.0076 µg/L No EPA limit set | 2/4 | UCMR-5 |
| Pfpea | 0.0067 µg/L No EPA limit set | 3/4 | UCMR-5 |
| Pfhxa | 0.0041 µg/L No EPA limit set | 2/4 | UCMR-5 |
| PFOS | 0.0040 µg/L No EPA limit set | 1/4 | UCMR-5 |
| Lead | 0.0037 mg/L 25% of the EPA limit 0.0150 mg/L | 4/4 | LCR |
| PFHXS | 0.0034 µg/L No EPA limit set | 2/4 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set | 1/4 | UCMR-5 |
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 92879
| Supplier | State | Population served |
|---|---|---|
| RIVERSIDE, CITY OF | CA | 298,398 |
| ELSINORE VALLEY MWD | CA | 169,455 |
| CORONA, CITY OF | CA | 168,575 |
| WESTERN MWD | CA | 86,062 |
Frequently asked questions about ZIP 92879 tap water
Is the tap water in ZIP 92879 safe to drink?
EPA testing detected 38 contaminants across the water suppliers serving ZIP 92879. 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 92879?
4 public water suppliers report EPA drinking-water monitoring for ZIP 92879. Each is listed above with its population served.
What contaminants are in ZIP 92879's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.