What was found in ZIP 98033
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 | 1900 µg/L 19% of the EPA limit 10000 µg/L | 1/3 | SYR4 |
| Nitrate-Nitrite | 1900 µg/L 19% of the EPA limit 10000 µg/L | 1/3 | SYR4 |
| Fluoride | 830 µg/L 21% of the EPA limit 4000 µg/L | 1/3 | SYR4 |
| TTHM | 72.42 µg/L 91% of the EPA limit 80 µg/L | 3/3 | SYR4 |
| Chloroform | 70.2 µg/L No EPA limit set | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 51.08 µg/L 85% of the EPA limit 60 µg/L | 3/3 | SYR4 |
| Copper | 34 µg/L 2.6% of the EPA limit 1300 µg/L | 1/3 | SYR4 |
| Trichloroacetic Acid | 32.7 µg/L No EPA limit set | 3/3 | SYR4 |
| Dichloroacetic Acid | 23.7 µg/L No EPA limit set | 3/3 | SYR4 |
| Lithium | 13 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Monochloroacetic Acid | 7.6 µg/L No EPA limit set | 3/3 | SYR4 |
| Bromodichloromethane | 7.36 µg/L No EPA limit set | 3/3 | SYR4 |
| Barium | 5 µg/L 0.3% of the EPA limit 2000 µg/L | 1/3 | SYR4 |
| Dibromochloromethane | 4.42 µg/L No EPA limit set | 3/3 | SYR4 |
| Monobromoacetic Acid | 3.44 µg/L No EPA limit set | 1/3 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L | 1/3 | SYR4 |
| Arsenic | 1.8 µg/L 18% of the EPA limit 10 µg/L | 1/3 | SYR4 |
| Gross Beta Particle Activity | 1.6 pCi/L No EPA limit set | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.58 µg/L No EPA limit set | 2/3 | SYR4 |
| Bromoform | 1.43 µg/L No EPA limit set | 1/3 | SYR4 |
| Tetrachloroethylene | 1.1 µg/L 22% of the EPA limit 5 µg/L | 1/3 | SYR4 |
| PFBS | 0.0050 µg/L No EPA limit set | 1/3 | UCMR-5 |
| PFOS | 0.0050 µg/L No EPA limit set | 1/3 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 1/3 | 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 98033
| Supplier | State | Population served |
|---|---|---|
| REDMOND WATER SYSTEM CITY OF | WA | 163,335 |
| KIRKLAND CITY OF | WA | 69,243 |
| WOODINVILLE WATER DISTRICT | WA | 66,699 |
Frequently asked questions about ZIP 98033 tap water
Is the tap water in ZIP 98033 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 98033. 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 98033?
3 public water suppliers report EPA drinking-water monitoring for ZIP 98033. Each is listed above with its population served.
What contaminants are in ZIP 98033's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.