What was found in ZIP 99336
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 | 5000 µg/L 50% of the EPA limit 10000 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 3780 µg/L 38% of the EPA limit 10000 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2015 | 1/1 | SYR4 |
| Fluoride | 713.9 µg/L 18% of the EPA limit 4000 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2014 | 1/1 | SYR4 |
| Barium | 60.92 µg/L 3% of the EPA limit 2000 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2014 | 1/1 | SYR4 |
| TTHM | 58.1035 µg/L 73% of the EPA limit 80 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Chloroform | 44.175 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Copper | 40.58 µg/L 3.1% of the EPA limit 1300 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2014 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24.675 µg/L 41% of the EPA limit 60 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 17.37 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 15.8 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 14.365 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 11.57 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 10.3165 pCi/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2014 | 1/1 | SYR4 |
| Lithium | 9.38 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2023 | 1/1 | UCMR-5 |
| Bromoform | 8.4765 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Arsenic | 4.74 µg/L 47% of the EPA limit 10 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2014 | 1/1 | SYR4 |
| Dibromoacetic Acid | 4.686 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.1 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Lead | 1.61 µg/L 11% of the EPA limit 15 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2014 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.55 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.414 µg/L 1.4% of the EPA limit 100 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2014 | 1/1 | SYR4 |
| Dichloromethane | 0.8300 µg/L 17% of the EPA limit 5 µg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0115 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2024 | 1/1 | UCMR-5 |
| PFHXS | 0.0106 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0075 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0065 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0064 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2024 | 1/1 | UCMR-5 |
| PFOA | 0.0046 µg/L No EPA limit set Main supplier: KENNEWICK CITY OF · 118,164 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: KENNEWICK CITY OF · 118,164 people · 2025 | 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 99336
| Supplier | State | Population served |
|---|---|---|
| KENNEWICK CITY OF | WA | 118,164 |
Frequently asked questions about ZIP 99336 tap water
Is the tap water in ZIP 99336 safe to drink?
EPA testing detected 29 contaminants across the water suppliers serving ZIP 99336. 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 99336?
1 public water supplier report EPA drinking-water monitoring for ZIP 99336. Each is listed above with its population served.
What contaminants are in ZIP 99336'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.