What was found in Jackson'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 | 11200 µg/L 112% of the EPA limit, in the worst sample — 10000 µg/L | 21/24 | SYR4 |
| Nitrate | 8900 µg/L 89% of the EPA limit 10000 µg/L | 3/24 | SYR4 |
| Copper | 2500 µg/L 192% of the EPA limit, in the worst sample — 1300 µg/L | 21/24 | SYR4 |
| Fluoride | 2000 µg/L 50% of the EPA limit 4000 µg/L | 21/24 | SYR4 |
| Barium | 400 µg/L 20% of the EPA limit 2000 µg/L | 7/24 | SYR4 |
| TTHM | 40 µg/L 50% of the EPA limit 80 µg/L | 13/24 | SYR4 |
| Bromoform | 28 µg/L No EPA limit set | 8/24 | SYR4 |
| Dibromochloromethane | 17 µg/L No EPA limit set | 11/24 | SYR4 |
| Total Haloacetic Acids (HAA5) | 17 µg/L 28% of the EPA limit 60 µg/L | 12/24 | SYR4 |
| Arsenic | 15 µg/L 150% of the EPA limit, in the worst sample — 10 µg/L | 16/24 | SYR4 |
| Lead | 13 µg/L 87% of the EPA limit 15 µg/L | 19/24 | SYR4 |
| Chloroform | 11 µg/L No EPA limit set | 9/24 | SYR4 |
| Bromodichloromethane | 10 µg/L No EPA limit set | 11/24 | SYR4 |
| Dichloroacetic Acid | 10 µg/L No EPA limit set | 4/24 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8.1 pCi/L 54% of the EPA limit 15 pCi/L | 18/24 | SYR4 |
| Selenium | 7 µg/L 14% of the EPA limit 50 µg/L | 6/24 | SYR4 |
| Trichloroacetic Acid | 6.4 µg/L No EPA limit set | 1/24 | SYR4 |
| Dibromoacetic Acid | 6.1 µg/L No EPA limit set | 11/24 | SYR4 |
| Combined Radium (-226 And -228) | 5.4 pCi/L 108% of the EPA limit, in the worst sample — 5 pCi/L | 15/24 | SYR4 |
| Gross Beta Particle Activity | 5.3 pCi/L No EPA limit set | 1/24 | SYR4 |
| Thallium, Total | 3.4 µg/L 170% of the EPA limit, in the worst sample — 2 µg/L | 4/24 | SYR4 |
| Combined Uranium | 3 µg/L 10% of the EPA limit 30 µg/L | 16/24 | SYR4 |
| Antimony, Total | 2 µg/L 33% of the EPA limit 6 µg/L | 1/24 | SYR4 |
| Benzene | 1.8 µg/L 36% of the EPA limit 5 µg/L | 1/24 | SYR4 |
| Trichloroethylene | 1.8 µg/L 36% of the EPA limit 5 µg/L | 1/24 | SYR4 |
| cis-1,2-Dichloroethylene | 1.8 µg/L 2.6% of the EPA limit 70 µg/L | 1/24 | SYR4 |
| Tetrachloroethylene | 1.7 µg/L 34% of the EPA limit 5 µg/L | 1/24 | SYR4 |
| Cadmium | 1 µg/L 20% of the EPA limit 5 µg/L | 1/24 | SYR4 |
| Lead | 0.0080 mg/L 53% of the EPA limit 0.0150 mg/L | 24/24 | LCR |
Water suppliers serving Jackson
Frequently asked questions about Jackson tap water
Is Jackson tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Jackson. 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 Jackson?
24 public water suppliers report drinking-water monitoring for Jackson, Wyoming to the EPA. Each is listed above with its population served.
What contaminants are in Jackson's water?
The contaminants EPA monitoring detected in Jackson include Nitrate-Nitrite, Nitrate, Copper, Fluoride, 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.