What was found in ZIP 92028
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-Nitrite | 630000 µg/L 6300% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: FALLBROOK PUD · 35,237 people · 2014 | 2/3 | SYR4 |
| Nitrate | 1988.8 µg/L 20% of the EPA limit 10000 µg/L Main supplier: FALLBROOK PUD · 35,237 people · 2019 | 2/3 | SYR4 |
| Copper | 382.55 µg/L 29% of the EPA limit 1300 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/3 | SYR4 |
| Fluoride | 303 µg/L 7.6% of the EPA limit 4000 µg/L Main supplier: FALLBROOK PUD · 35,237 people · 2017 | 1/3 | SYR4 |
| Lead | 117.19 µg/L 781% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/3 | SYR4 |
| Lithium | 51.6 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2024 | 2/3 | UCMR-5 |
| TTHM | 48.05 µg/L 60% of the EPA limit 80 µg/L Main supplier: FALLBROOK PUD · 35,237 people · 2019
Highest in the ZIP: 48.45 µg/L — RAINBOW MUNICIPAL WD · 23,536 people · 2019 | 3/3 | SYR4 |
| Barium | 48 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: FALLBROOK PUD · 35,237 people · 2017 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 19.91 µg/L 33% of the EPA limit 60 µg/L Main supplier: FALLBROOK PUD · 35,237 people · 2019
Highest in the ZIP: 25.65 µg/L — RAINBOW MUNICIPAL WD · 23,536 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 13.25 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019
Highest in the ZIP: 22.9 µg/L — RAINBOW MUNICIPAL WD · 23,536 people · 2019 | 2/3 | SYR4 |
| Chloroform | 18 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019 | 2/3 | SYR4 |
| Bromoform | 6.405 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019
Highest in the ZIP: 16.875 µg/L — KOHALA RANCH WATER CO. · 850 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 13.05 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019
Highest in the ZIP: 16.35 µg/L — RAINBOW MUNICIPAL WD · 23,536 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 15 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 10.91 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 5.74 pCi/L No EPA limit set Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 5.73 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 4.575 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019
Highest in the ZIP: 5.46 µg/L — RAINBOW MUNICIPAL WD · 23,536 people · 2019 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.4 pCi/L 29% of the EPA limit 15 pCi/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 3.195 µg/L No EPA limit set Main supplier: FALLBROOK PUD · 35,237 people · 2019
Highest in the ZIP: 3.25 µg/L — RAINBOW MUNICIPAL WD · 23,536 people · 2019 | 2/3 | SYR4 |
| Chromium | 2.1495 µg/L 2.1% of the EPA limit 100 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: FALLBROOK PUD · 35,237 people · 2024
Highest in the ZIP: 0.0107 mg/L — KOHALA RANCH WATER CO. · 850 people · 2021 | 3/3 | 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 92028
| Supplier | State | Population served |
|---|---|---|
| FALLBROOK PUD | CA | 35,237 |
| RAINBOW MUNICIPAL WD | CA | 23,536 |
| KOHALA RANCH WATER CO. | HI | 850 |
Frequently asked questions about ZIP 92028 tap water
Is the tap water in ZIP 92028 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 92028. 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 92028?
3 public water suppliers report EPA drinking-water monitoring for ZIP 92028. Each is listed above with its population served.
What contaminants are in ZIP 92028's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Copper, Fluoride, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.