What was found in ZIP 65256
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 |
|---|---|---|---|
| Fluoride | 1515 µg/L 38% of the EPA limit 4000 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018
Highest in the ZIP: 1619 µg/L — BOONE COUNTY PWSD 10 · 4,963 people · 2018 | 2/3 | SYR4 |
| Copper | 144.2 µg/L 11% of the EPA limit 1300 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018
Highest in the ZIP: 863.25 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2018 | 3/3 | SYR4 |
| Barium | 187.7 µg/L 9.4% of the EPA limit 2000 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018 | 2/3 | SYR4 |
| Lithium | 68.8 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2024
Highest in the ZIP: 79.9 µg/L — BOONE COUNTY PWSD 10 · 4,963 people · 2025 | 2/3 | UCMR-5 |
| TTHM | 39.84 µg/L 50% of the EPA limit 80 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019
Highest in the ZIP: 70.265 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Chloroform | 4.582 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019
Highest in the ZIP: 59.3 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | 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 | 1/3 | SYR4 |
| Dichloroacetic Acid | 2.32 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019
Highest in the ZIP: 33.435 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 20.05 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 1.15 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019
Highest in the ZIP: 19.76 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 17 pCi/L 113% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018 | 1/3 | SYR4 |
| Lead | 9.224 µg/L 61% of the EPA limit 15 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018
Highest in the ZIP: 15.66 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2018 | 3/3 | SYR4 |
| Bromodichloromethane | 10.475 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019
Highest in the ZIP: 12.865 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 10.3 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 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 | 6.236 µg/L 6.2% of the EPA limit 100 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 3.44 pCi/L 69% of the EPA limit 5 pCi/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018 | 2/3 | SYR4 |
| Bromoform | 3.366 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.639 µg/L No EPA limit set Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2019
Highest in the ZIP: 2.055 µg/L — THOMAS HILL PWSD 1 · 11,250 people · 2019 | 2/3 | SYR4 |
| Combined Uranium | 1.1 µg/L 3.7% of the EPA limit 30 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018 | 1/3 | SYR4 |
| Dichloromethane | 0.6200 µg/L 12% of the EPA limit 5 µg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2018 | 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 | 0.0035 mg/L 23% of the EPA limit 0.0150 mg/L Main supplier: BOONE COUNTY CONS PWSD 1 · 24,700 people · 2024 | 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 65256
| Supplier | State | Population served |
|---|---|---|
| BOONE COUNTY CONS PWSD 1 | MO | 24,700 |
| THOMAS HILL PWSD 1 | MO | 11,250 |
| BOONE COUNTY PWSD 10 | MO | 4,963 |
Frequently asked questions about ZIP 65256 tap water
Is the tap water in ZIP 65256 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 65256. 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 65256?
3 public water suppliers report EPA drinking-water monitoring for ZIP 65256. Each is listed above with its population served.
What contaminants are in ZIP 65256's water?
EPA monitoring detected Fluoride, Copper, Barium, Lithium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.