What was found in Shell Knob's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 570 µg/L 5.7% of the EPA limit 10000 µg/L | 11/14 | SYR4 |
| Copper | 472 µg/L 36% of the EPA limit 1300 µg/L | 14/14 | SYR4 |
| Fluoride | 130 µg/L 3.3% of the EPA limit 4000 µg/L | 4/14 | SYR4 |
| Nitrate | 130 µg/L 1.3% of the EPA limit 10000 µg/L | 3/14 | SYR4 |
| Barium | 41.7 µg/L 2.1% of the EPA limit 2000 µg/L | 11/14 | SYR4 |
| Lead | 35.5 µg/L 237% of the EPA limit, in the worst sample — 15 µg/L | 14/14 | SYR4 |
| TTHM | 22.9 µg/L 29% of the EPA limit 80 µg/L | 6/14 | SYR4 |
| Chloroform | 18.8 µg/L No EPA limit set | 10/14 | SYR4 |
| Bromodichloromethane | 10.5 µg/L No EPA limit set | 6/14 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.3 pCi/L 49% of the EPA limit 15 pCi/L | 1/14 | SYR4 |
| Chromium | 6.81 µg/L 6.8% of the EPA limit 100 µg/L | 11/14 | SYR4 |
| Cyanide | 6 µg/L 3% of the EPA limit 200 µg/L | 1/14 | SYR4 |
| Xylenes, Total | 5.51 µg/L 0.1% of the EPA limit 10000 µg/L | 5/14 | SYR4 |
| Dichloroacetic Acid | 4.24 µg/L No EPA limit set | 6/14 | SYR4 |
| Combined Uranium | 1.81 µg/L 6% of the EPA limit 30 µg/L | 1/14 | SYR4 |
| Combined Radium (-226 And -228) | 1.8 pCi/L 36% of the EPA limit 5 pCi/L | 4/14 | SYR4 |
| Dibromochloromethane | 1.55 µg/L No EPA limit set | 5/14 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.5 µg/L 2.5% of the EPA limit 60 µg/L | 1/14 | SYR4 |
| Monobromoacetic Acid | 1.3 µg/L No EPA limit set | 1/14 | SYR4 |
| Arsenic | 1.18 µg/L 12% of the EPA limit 10 µg/L | 2/14 | SYR4 |
| Trichloroacetic Acid | 1.14 µg/L No EPA limit set | 1/14 | SYR4 |
| Ethylbenzene | 1.1 µg/L 0.2% of the EPA limit 700 µg/L | 2/14 | SYR4 |
| Styrene | 0.6300 µg/L 0.6% of the EPA limit 100 µg/L | 2/14 | SYR4 |
| Lead | 0.0070 mg/L 47% of the EPA limit 0.0150 mg/L | 14/14 | LCR |
Water suppliers serving Shell Knob
| Supplier | Population served |
|---|---|
| MO AMERICAN OZARK MTN WATER COMPANY 2 | 583 |
| MO AMERICAN OZARK MTN WATER COMPANY 1 | 350 |
| KNOB HILL ACRES | 125 |
| FOX WOODS SUBDIVISION | 125 |
| GREEN SHORES SUBD | 120 |
| OZARK VILLAS AT SHELL KNOB | 110 |
| TWIN RIVERS SUBD | 72 |
| SYCAMORE LANDING ASSN | 70 |
| KINGS RIVER BEACH WATER ASSOCIATION INC | 50 |
| MO AMERICAN LAKEWOOD MANOR SUBD | 50 |
| SHELL ROCK UTILITIES | 45 |
| BARRY COUNTY PWSD 2 | 34 |
| CENTRAL CROSSING ACRES II | 25 |
| GREEN WOODS | 25 |
Frequently asked questions about Shell Knob tap water
Is Shell Knob tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Shell Knob. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Shell Knob?
14 public water suppliers report drinking-water monitoring for Shell Knob, Missouri to the EPA. Each is listed above with its population served.
What contaminants are in Shell Knob's water?
The contaminants EPA monitoring detected in Shell Knob include Nitrate-Nitrite, Copper, Fluoride, Nitrate, Barium. The full list, with the highest level found and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.