What was found in ZIP 99003
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 3136.5 µg/L 31% of the EPA limit 10000 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 2690 µg/L 27% of the EPA limit 10000 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019 | 2/2 | SYR4 |
| Fluoride | 325.85 µg/L 8.1% of the EPA limit 4000 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019 | 2/2 | SYR4 |
| Barium | 75.04 µg/L 3.8% of the EPA limit 2000 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019
Highest in the ZIP: 213 µg/L — STEVENS CO PUD - VALLEY · 550 people · 2019 | 2/2 | SYR4 |
| TTHM | 4.5905 µg/L 5.7% of the EPA limit 80 µg/L Highest in the ZIP: STEVENS CO PUD - VALLEY · 550 people · 2016 | 1/2 | SYR4 |
| Arsenic | 3.878 µg/L 39% of the EPA limit 10 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019 | 2/2 | SYR4 |
| Copper | 3.357 µg/L 0.3% of the EPA limit 1300 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 1.7855 µg/L No EPA limit set Highest in the ZIP: STEVENS CO PUD - VALLEY · 550 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 1.317 µg/L No EPA limit set Highest in the ZIP: STEVENS CO PUD - VALLEY · 550 people · 2019 | 1/2 | SYR4 |
| Chromium | 1.2 µg/L 1.2% of the EPA limit 100 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019 | 1/2 | SYR4 |
| Bromoform | 0.8270 µg/L No EPA limit set Highest in the ZIP: STEVENS CO PUD - VALLEY · 550 people · 2019 | 1/2 | SYR4 |
| Chloroform | 0.7870 µg/L No EPA limit set Highest in the ZIP: STEVENS CO PUD - VALLEY · 550 people · 2019 | 1/2 | SYR4 |
| Trichloroethylene | 0.6980 µg/L 14% of the EPA limit 5 µg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2019 | 1/2 | SYR4 |
| PFBS | 0.0052 µg/L No EPA limit set Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2024 | 1/2 | UCMR-5 |
| PFOS | 0.0046 µg/L No EPA limit set Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0035 µg/L No EPA limit set Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0031 µg/L No EPA limit set Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L Main supplier: WHITWORTH WATER DISTRICT 2 · 26,883 people · 2024 | 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 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 99003
| Supplier | State | Population served |
|---|---|---|
| WHITWORTH WATER DISTRICT 2 | WA | 26,883 |
| STEVENS CO PUD - VALLEY | WA | 550 |
Frequently asked questions about ZIP 99003 tap water
Is the tap water in ZIP 99003 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 99003. 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 99003?
2 public water suppliers report EPA drinking-water monitoring for ZIP 99003. Each is listed above with its population served.
What contaminants are in ZIP 99003's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.