What was found in ZIP 92531
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 | 7600 µg/L 76% of the EPA limit 10000 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 5820 µg/L 58% of the EPA limit 10000 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2017 | 1/1 | SYR4 |
| Fluoride | 1100 µg/L 28% of the EPA limit 4000 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Copper | 456 µg/L 35% of the EPA limit 1300 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Barium | 185.99999999999994 µg/L 9.3% of the EPA limit 2000 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Nitrite | 95.01249999999999 µg/L 9.5% of the EPA limit 1000 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| TTHM | 50.44999999999999 µg/L 63% of the EPA limit 80 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Lithium | 39 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2025 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 30.39999999999999 µg/L 51% of the EPA limit 60 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Arsenic | 25 µg/L 250% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 22.19999999999999 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 18 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 17 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Selenium | 16 µg/L 32% of the EPA limit 50 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Bromoform | 13.699999999999989 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 13.058359999999995 µg/L 44% of the EPA limit 30 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Chloroform | 13 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 13 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 10.299999999999997 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Lead | 8 µg/L 53% of the EPA limit 15 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 7.025 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 6.959999999999999 pCi/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 5.85 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Dichloromethane | 1.5289999999999995 µg/L 31% of the EPA limit 5 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.19 µg/L 1.2% of the EPA limit 100 µg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0070 µg/L No EPA limit set Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L Main supplier: ELSINORE VALLEY MWD · 169,455 people · 2025 | 1/1 | 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 92531
| Supplier | State | Population served |
|---|---|---|
| ELSINORE VALLEY MWD | CA | 169,455 |
Frequently asked questions about ZIP 92531 tap water
Is the tap water in ZIP 92531 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 92531. 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 92531?
1 public water supplier report EPA drinking-water monitoring for ZIP 92531. Each is listed above with its population served.
What contaminants are in ZIP 92531's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.