What was found in ZIP 92004
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 | 2001.71 µg/L 20% of the EPA limit 10000 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Fluoride | 1195 µg/L 30% of the EPA limit 4000 µg/L Main supplier: BORREGO WD · 3,429 people · 2017 | 1/1 | SYR4 |
| Barium | 176.5 µg/L 8.8% of the EPA limit 2000 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Lithium | 40.8 µg/L No EPA limit set Main supplier: BORREGO WD · 3,429 people · 2025 | 1/1 | UCMR-5 |
| Selenium | 9.61 µg/L 19% of the EPA limit 50 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| TTHM | 8.78 µg/L 11% of the EPA limit 80 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.395 µg/L 14% of the EPA limit 60 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Arsenic | 6.38 µg/L 64% of the EPA limit 10 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Lead | 5.7 µg/L 38% of the EPA limit 15 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 5.68137 µg/L 19% of the EPA limit 30 µg/L Main supplier: BORREGO WD · 3,429 people · 2018 | 1/1 | SYR4 |
| Monochloroacetic Acid | 5.565 µg/L No EPA limit set Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Bromoform | 4.17 µg/L No EPA limit set Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 3.37 µg/L No EPA limit set Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 3.11 µg/L No EPA limit set Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Chromium | 2.21 µg/L 2.2% of the EPA limit 100 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 1.514 µg/L No EPA limit set Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Chloroform | 1.1 µg/L No EPA limit set Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Dichloromethane | 0.8300 µg/L 17% of the EPA limit 5 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Endrin | 0.2500 µg/L 13% of the EPA limit 2 µg/L Main supplier: BORREGO WD · 3,429 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: BORREGO WD · 3,429 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 92004
| Supplier | State | Population served |
|---|---|---|
| BORREGO WD | CA | 3,429 |
Frequently asked questions about ZIP 92004 tap water
Is the tap water in ZIP 92004 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 92004. 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 92004?
1 public water supplier report EPA drinking-water monitoring for ZIP 92004. Each is listed above with its population served.
What contaminants are in ZIP 92004's water?
EPA monitoring detected Nitrate, Fluoride, Barium, Lithium, Selenium, and others across this ZIP's suppliers. The full list with levels and sources is above.