What was found in ZIP 92277
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 | 7458 µg/L 75% of the EPA limit 10000 µg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Fluoride | 5800 µg/L 145% of the EPA limit, at the 95th percentile of samples — 4000 µg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 3520 µg/L 35% of the EPA limit 10000 µg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Lithium | 46.5 µg/L No EPA limit set Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2025 | 1/1 | UCMR-5 |
| Combined Uranium | 31.29 µg/L 104% of the EPA limit, at the 95th percentile of samples — 30 µg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Chromium | 27.5 µg/L 28% of the EPA limit 100 µg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Arsenic | 16 µg/L 160% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| TTHM | 8.07 µg/L 10% of the EPA limit 80 µg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Bromoform | 7.89 µg/L No EPA limit set Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 1.3 µg/L No EPA limit set Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TWENTYNINE PALMS WATER DISTRICT · 18,795 people · 2023 | 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 92277
| Supplier | State | Population served |
|---|---|---|
| TWENTYNINE PALMS WATER DISTRICT | CA | 18,795 |
Frequently asked questions about ZIP 92277 tap water
Is the tap water in ZIP 92277 safe to drink?
EPA testing detected 11 contaminants across the water suppliers serving ZIP 92277. 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 92277?
1 public water supplier report EPA drinking-water monitoring for ZIP 92277. Each is listed above with its population served.
What contaminants are in ZIP 92277's water?
EPA monitoring detected Nitrate, Fluoride, Nitrate-Nitrite, Lithium, Combined Uranium, and others across this ZIP's suppliers. The full list with levels and sources is above.