What was found in ZIP 95640
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 | 620000 µg/L 6200% of the EPA limit, in the worst sample — 10000 µg/L | 3/3 | SYR4 |
| Nitrate | 2000 µg/L 20% of the EPA limit 10000 µg/L | 2/3 | SYR4 |
| Fluoride | 730 µg/L 18% of the EPA limit 4000 µg/L | 3/3 | SYR4 |
| TTHM | 94 µg/L 118% of the EPA limit, in the worst sample — 80 µg/L | 2/3 | SYR4 |
| Chloroform | 90 µg/L No EPA limit set | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 48.2 µg/L 80% of the EPA limit 60 µg/L | 2/3 | SYR4 |
| Trichloroacetic Acid | 27.8 µg/L No EPA limit set | 2/3 | SYR4 |
| Dichloroacetic Acid | 22.3 µg/L No EPA limit set | 2/3 | SYR4 |
| Bromodichloromethane | 7.2 µg/L No EPA limit set | 2/3 | SYR4 |
| Monochloroacetic Acid | 6.2 µg/L No EPA limit set | 2/3 | SYR4 |
| Arsenic | 4.2 µg/L 42% of the EPA limit 10 µg/L | 1/3 | SYR4 |
| Monobromoacetic Acid | 4 µg/L No EPA limit set | 1/3 | SYR4 |
| Dibromochloromethane | 0.8700 µg/L No EPA limit set | 1/3 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.1300 µg/L 65% of the EPA limit 0.2000 µg/L | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 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 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 95640
| Supplier | State | Population served |
|---|---|---|
| AWA, IONE | CA | 7,227 |
| JACKSON VALLEY IRRIGATION DISTRICT | CA | 3,553 |
| WINE COUNTRY APARTMENTS | CA | 40 |
Frequently asked questions about ZIP 95640 tap water
Is the tap water in ZIP 95640 safe to drink?
EPA testing detected 15 contaminants across the water suppliers serving ZIP 95640. 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 95640?
3 public water suppliers report EPA drinking-water monitoring for ZIP 95640. Each is listed above with its population served.
What contaminants are in ZIP 95640's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.