What was found in ZIP 63379
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-Nitrite | 62 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 6779 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 4/4 | SYR4 |
| Fluoride | 2318 µg/L 58% of the EPA limit 4000 µg/L Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 4100 µg/L — LINCOLN COUNTY PWSD 1 · 14,000 people · 2019 | 4/4 | SYR4 |
| Copper | 161.6 µg/L 12% of the EPA limit 1300 µg/L Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 642.4 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2017 | 4/4 | SYR4 |
| Lithium | 251 µg/L No EPA limit set Main supplier: TROY PWS · 15,000 people · 2024 | 3/4 | UCMR-5 |
| Barium | 27.7 µg/L 1.4% of the EPA limit 2000 µg/L Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 54.07 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2017 | 4/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 18.14 pCi/L 121% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: TROY PWS · 15,000 people · 2017 | 1/4 | SYR4 |
| Selenium | 10.206 µg/L 20% of the EPA limit 50 µg/L Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 12.2285 µg/L — LINCOLN COUNTY PWSD 1 · 14,000 people · 2019 | 2/4 | SYR4 |
| TTHM | 6.66 µg/L 8.3% of the EPA limit 80 µg/L Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 9.848 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 3/4 | SYR4 |
| Lead | 4.715 µg/L 31% of the EPA limit 15 µg/L Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 8.727 µg/L — LINCOLN COUNTY PWSD 1 · 14,000 people · 2019 | 4/4 | SYR4 |
| Chromium | 7.5255 µg/L 7.5% of the EPA limit 100 µg/L Main supplier: TROY PWS · 15,000 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 4.7095 µg/L No EPA limit set Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 1/4 | SYR4 |
| Arsenic | 4.6915 µg/L 47% of the EPA limit 10 µg/L Main supplier: TROY PWS · 15,000 people · 2019 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 4.4 pCi/L 88% of the EPA limit 5 pCi/L Main supplier: TROY PWS · 15,000 people · 2019 | 3/4 | SYR4 |
| Bromoform | 3.757 µg/L No EPA limit set Main supplier: TROY PWS · 15,000 people · 2019 | 3/4 | SYR4 |
| Cadmium | 3.4 µg/L 68% of the EPA limit 5 µg/L Main supplier: TROY PWS · 15,000 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 2.778 µg/L No EPA limit set Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 3.266 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 3/4 | SYR4 |
| Bromodichloromethane | 1.515 µg/L No EPA limit set Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 3.244 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 3/4 | SYR4 |
| Dichloroacetic Acid | 1.09 µg/L No EPA limit set Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 2.9175 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 2/4 | SYR4 |
| Trichloroacetic Acid | 2.774 µg/L No EPA limit set Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 1/4 | SYR4 |
| Chloroform | 0.5100 µg/L No EPA limit set Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 2.5 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 2/4 | SYR4 |
| Combined Uranium | 1.788 µg/L 6% of the EPA limit 30 µg/L Main supplier: TROY PWS · 15,000 people · 2017 | 1/4 | SYR4 |
| Dibromoacetic Acid | 1.31 µg/L No EPA limit set Main supplier: TROY PWS · 15,000 people · 2019
Highest in the ZIP: 1.364 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.31 µg/L 2.2% of the EPA limit 60 µg/L Main supplier: TROY PWS · 15,000 people · 2019 | 2/4 | SYR4 |
| Lead | 0.0016 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: TROY PWS · 15,000 people · 2025
Highest in the ZIP: 0.0035 mg/L — LINCOLN COUNTY PWSD 1 · 14,000 people · 2024 | 4/4 | 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 63379
| Supplier | State | Population served |
|---|---|---|
| TROY PWS | MO | 15,000 |
| LINCOLN COUNTY PWSD 1 | MO | 14,000 |
| CLARK COUNTY CONS PWSD 1 | MO | 7,140 |
| WESTMIER SUBDIVISION | MO | 90 |
Frequently asked questions about ZIP 63379 tap water
Is the tap water in ZIP 63379 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 63379. 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 63379?
4 public water suppliers report EPA drinking-water monitoring for ZIP 63379. Each is listed above with its population served.
What contaminants are in ZIP 63379's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, Lithium, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.