What was found in ZIP 99301
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 | 1000 µg/L 10% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Fluoride | 750 µg/L 19% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Nitrate-Nitrite | 500 µg/L 5% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| TTHM | 66 µg/L 83% of the EPA limit 80 µg/L | 1/1 | SYR4 |
| Chloroform | 62.5 µg/L No EPA limit set | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 52.3 µg/L 87% of the EPA limit 60 µg/L | 1/1 | SYR4 |
| Trichloroacetic Acid | 34.1 µg/L No EPA limit set | 1/1 | SYR4 |
| Barium | 28 µg/L 1.4% of the EPA limit 2000 µg/L | 1/1 | SYR4 |
| Dichloroacetic Acid | 23.7 µg/L No EPA limit set | 1/1 | SYR4 |
| Bromodichloromethane | 5.3 µg/L No EPA limit set | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.1 µg/L No EPA limit set | 1/1 | SYR4 |
| Dibromochloromethane | 0.6000 µg/L No EPA limit set | 1/1 | SYR4 |
| Lead | 0.0019 mg/L 13% of the EPA limit 0.0150 mg/L | 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 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 99301
| Supplier | State | Population served |
|---|---|---|
| PASCO WATER DEPARTMENT | WA | 115,102 |
Frequently asked questions about ZIP 99301 tap water
Is the tap water in ZIP 99301 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 99301. 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 99301?
1 public water supplier report EPA drinking-water monitoring for ZIP 99301. Each is listed above with its population served.
What contaminants are in ZIP 99301's water?
EPA monitoring detected Nitrate, Fluoride, Nitrate-Nitrite, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.