What was found in ZIP 98031
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 | 1500 µg/L 15% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Nitrate-Nitrite | 1500 µg/L 15% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L | 1/2 | SYR4 |
| Nitrite | 150 µg/L 15% of the EPA limit 1000 µg/L | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 66.3 µg/L 111% of the EPA limit, in the worst sample — 60 µg/L | 2/2 | SYR4 |
| TTHM | 58.09 µg/L 73% of the EPA limit 80 µg/L | 2/2 | SYR4 |
| Chloroform | 55.6 µg/L No EPA limit set | 2/2 | SYR4 |
| Trichloroacetic Acid | 39.2 µg/L No EPA limit set | 2/2 | SYR4 |
| Dichloroacetic Acid | 28.9 µg/L No EPA limit set | 2/2 | SYR4 |
| Bromodichloromethane | 9.1 µg/L No EPA limit set | 2/2 | SYR4 |
| Monochloroacetic Acid | 5.2 µg/L No EPA limit set | 1/2 | SYR4 |
| Dibromochloromethane | 4.7 µg/L No EPA limit set | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.75 µg/L No EPA limit set | 1/2 | SYR4 |
| Arsenic | 2.5 µg/L 25% of the EPA limit 10 µg/L | 1/2 | SYR4 |
| Monobromoacetic Acid | 2.17 µg/L No EPA limit set | 1/2 | SYR4 |
| Bromoform | 1.65 µg/L No EPA limit set | 1/2 | SYR4 |
| PFBS | 0.0034 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 1/2 | 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 98031
| Supplier | State | Population served |
|---|---|---|
| KENT WATER DEPARTMENT | WA | 166,421 |
| SOOS CREEK WATER & SEWER DISTRICT | WA | 74,172 |
Frequently asked questions about ZIP 98031 tap water
Is the tap water in ZIP 98031 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 98031. 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 98031?
2 public water suppliers report EPA drinking-water monitoring for ZIP 98031. Each is listed above with its population served.
What contaminants are in ZIP 98031's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Nitrite, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.