What was found in ZIP 99353
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 | 3400 µg/L 34% of the EPA limit 10000 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Fluoride | 3190.5 µg/L 80% of the EPA limit 4000 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 3012 µg/L 30% of the EPA limit 10000 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Barium | 77.355 µg/L 3.9% of the EPA limit 2000 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| TTHM | 71.97 µg/L 90% of the EPA limit 80 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Chloroform | 64.2 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 47.5 µg/L 79% of the EPA limit 60 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Lithium | 31.9 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2024 | 1/1 | UCMR-5 |
| Trichloroacetic Acid | 28.845 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 21.05 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 11.65 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 8.8 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Bromoform | 7.29 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 6.4 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Arsenic | 3.9 µg/L 39% of the EPA limit 10 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.29 µg/L No EPA limit set Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Copper | 1.71 µg/L 0.1% of the EPA limit 1300 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.019 µg/L 1% of the EPA limit 100 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Antimony, Total | 0.0500 µg/L 0.8% of the EPA limit 6 µg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: WEST RICHLAND CITY OF · 21,231 people · 2024 | 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 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 99353
| Supplier | State | Population served |
|---|---|---|
| WEST RICHLAND CITY OF | WA | 21,231 |
Frequently asked questions about ZIP 99353 tap water
Is the tap water in ZIP 99353 safe to drink?
EPA testing detected 21 contaminants across the water suppliers serving ZIP 99353. 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 99353?
1 public water supplier report EPA drinking-water monitoring for ZIP 99353. Each is listed above with its population served.
What contaminants are in ZIP 99353's water?
EPA monitoring detected Nitrate, Fluoride, Nitrate-Nitrite, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.