What was found in ZIP 93446
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 | 980000 µg/L 9800% of the EPA limit, in the worst sample — 10000 µg/L | 2/2 | SYR4 |
| Nitrate | 7232 µg/L 72% of the EPA limit 10000 µg/L | 2/2 | SYR4 |
| Fluoride | 960 µg/L 24% of the EPA limit 4000 µg/L | 2/2 | SYR4 |
| Barium | 330 µg/L 17% of the EPA limit 2000 µg/L | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 128 µg/L 213% of the EPA limit, in the worst sample — 60 µg/L | 2/2 | SYR4 |
| TTHM | 87.2 µg/L 109% of the EPA limit, in the worst sample — 80 µg/L | 2/2 | SYR4 |
| Trichloroacetic Acid | 72 µg/L No EPA limit set | 2/2 | SYR4 |
| Chloroform | 68.5 µg/L No EPA limit set | 2/2 | SYR4 |
| Dichloroacetic Acid | 56 µg/L No EPA limit set | 2/2 | SYR4 |
| Lithium | 46.2 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Bromoform | 41 µg/L No EPA limit set | 2/2 | SYR4 |
| Selenium | 41 µg/L 82% of the EPA limit 50 µg/L | 2/2 | SYR4 |
| Arsenic | 36 µg/L 360% of the EPA limit, in the worst sample — 10 µg/L | 1/2 | SYR4 |
| Copper | 30 µg/L 2.3% of the EPA limit 1300 µg/L | 1/2 | SYR4 |
| Dibromochloromethane | 30 µg/L No EPA limit set | 2/2 | SYR4 |
| Bromodichloromethane | 19 µg/L No EPA limit set | 2/2 | SYR4 |
| Dibromoacetic Acid | 13.2 µg/L No EPA limit set | 2/2 | SYR4 |
| Combined Uranium | 11.175 µg/L 37% of the EPA limit 30 µg/L | 1/2 | SYR4 |
| Lead | 7.1 µg/L 47% of the EPA limit 15 µg/L | 1/2 | SYR4 |
| Monochloroacetic Acid | 3.5 µg/L No EPA limit set | 2/2 | SYR4 |
| Monobromoacetic Acid | 2.1 µg/L No EPA limit set | 2/2 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L | 1/2 | SYR4 |
| Thallium, Total | 0.2000 µg/L 10% of the EPA limit 2 µg/L | 1/2 | SYR4 |
| Pfpea | 0.0220 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Pfhxa | 0.0200 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFBS | 0.0081 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Pfhpa | 0.0063 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFOA | 0.0063 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Pfba | 0.0061 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFHXS | 0.0052 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 2/2 | 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 93446
| Supplier | State | Population served |
|---|---|---|
| CITY OF PASO ROBLES WATER DIVISION | CA | 31,176 |
| HERITAGE RANCH CSD | CA | 2,956 |
Frequently asked questions about ZIP 93446 tap water
Is the tap water in ZIP 93446 safe to drink?
EPA testing detected 31 contaminants across the water suppliers serving ZIP 93446. 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 93446?
2 public water suppliers report EPA drinking-water monitoring for ZIP 93446. Each is listed above with its population served.
What contaminants are in ZIP 93446's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Barium, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.