What was found in ZIP 63090
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 |
|---|---|---|---|
| Copper | 131 µg/L 10% of the EPA limit 1300 µg/L Main supplier: WASHINGTON PWS · 14,068 people · 2018
Highest in the ZIP: 863.25 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2018 | 3/3 | SYR4 |
| Barium | 433.4 µg/L 22% of the EPA limit 2000 µg/L Main supplier: WASHINGTON PWS · 14,068 people · 2017
Highest in the ZIP: 624.65 µg/L — FRANKLIN COUNTY PWSD 1 · 3,500 people · 2017 | 2/3 | SYR4 |
| Nitrate-Nitrite | 170 µg/L 1.7% of the EPA limit 10000 µg/L Main supplier: WASHINGTON PWS · 14,068 people · 2019
Highest in the ZIP: 490 µg/L — FRANKLIN COUNTY PWSD 1 · 3,500 people · 2019 | 2/3 | SYR4 |
| Fluoride | 148 µg/L 3.7% of the EPA limit 4000 µg/L Main supplier: WASHINGTON PWS · 14,068 people · 2017 | 2/3 | SYR4 |
| TTHM | 70.265 µg/L 88% of the EPA limit 80 µg/L Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Chloroform | 1.56 µg/L No EPA limit set Main supplier: WASHINGTON PWS · 14,068 people · 2019
Highest in the ZIP: 59.3 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 54.9 µg/L 91% of the EPA limit 60 µg/L Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 33.435 µg/L No EPA limit set Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 19.76 µg/L No EPA limit set Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Toluene | 17.2 µg/L 1.7% of the EPA limit 1000 µg/L Main supplier: WASHINGTON PWS · 14,068 people · 2019 | 1/3 | SYR4 |
| Lead | 5.5175 µg/L 37% of the EPA limit 15 µg/L Main supplier: WASHINGTON PWS · 14,068 people · 2018
Highest in the ZIP: 15.66 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2018 | 3/3 | SYR4 |
| Bromodichloromethane | 12.865 µg/L No EPA limit set Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 8.661 µg/L No EPA limit set Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 1/3 | SYR4 |
| Chromium | 2.0855 µg/L 2.1% of the EPA limit 100 µg/L Main supplier: WASHINGTON PWS · 14,068 people · 2017
Highest in the ZIP: 4.912 µg/L — FRANKLIN COUNTY PWSD 1 · 3,500 people · 2017 | 2/3 | SYR4 |
| Dibromochloromethane | 2.75 µg/L No EPA limit set Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 2.055 µg/L No EPA limit set Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.1 pCi/L 22% of the EPA limit 5 pCi/L Highest in the ZIP: FRANKLIN COUNTY PWSD 1 · 3,500 people · 2015 | 1/3 | SYR4 |
| Xylenes, Total | 1.02 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: FRANKLIN COUNTY PWSD 1 · 3,500 people · 2017 | 1/3 | SYR4 |
| Pfba | 0.0093 µg/L No EPA limit set Highest in the ZIP: THOMAS HILL PWSD 1 · 11,250 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0026 mg/L 17% of the EPA limit 0.0150 mg/L Main supplier: WASHINGTON PWS · 14,068 people · 2024
Highest in the ZIP: 0.0041 mg/L — FRANKLIN COUNTY PWSD 1 · 3,500 people · 2025 | 3/3 | 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 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 63090
| Supplier | State | Population served |
|---|---|---|
| WASHINGTON PWS | MO | 14,068 |
| THOMAS HILL PWSD 1 | MO | 11,250 |
| FRANKLIN COUNTY PWSD 1 | MO | 3,500 |
Frequently asked questions about ZIP 63090 tap water
Is the tap water in ZIP 63090 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 63090. 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 63090?
3 public water suppliers report EPA drinking-water monitoring for ZIP 63090. Each is listed above with its population served.
What contaminants are in ZIP 63090's water?
EPA monitoring detected Copper, Barium, Nitrate-Nitrite, Fluoride, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.