What was found in Las Vegas'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 | 8400 µg/L 84% of the EPA limit 10000 µg/L | 17/23 | SYR4 |
| Nitrate-Nitrite | 7780 µg/L 78% of the EPA limit 10000 µg/L | 17/23 | SYR4 |
| Copper | 1260 µg/L 97% of the EPA limit 1300 µg/L | 17/23 | SYR4 |
| Fluoride | 1100 µg/L 28% of the EPA limit 4000 µg/L | 15/23 | SYR4 |
| Lead | 236 µg/L 1573% of the EPA limit, in the worst sample — 15 µg/L | 13/23 | SYR4 |
| Barium | 130 µg/L 6.5% of the EPA limit 2000 µg/L | 13/23 | SYR4 |
| TTHM | 94 µg/L 118% of the EPA limit, in the worst sample — 80 µg/L | 10/23 | SYR4 |
| Arsenic | 92 µg/L 920% of the EPA limit, in the worst sample — 10 µg/L | 14/23 | SYR4 |
| Lithium | 62.6 µg/L No EPA limit set | 2/23 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 58 µg/L 97% of the EPA limit 60 µg/L | 9/23 | SYR4 |
| Chloroform | 55 µg/L No EPA limit set | 9/23 | SYR4 |
| Dichloroacetic Acid | 35 µg/L No EPA limit set | 4/23 | SYR4 |
| Dibromoacetic Acid | 28.1 µg/L No EPA limit set | 5/23 | SYR4 |
| Bromodichloromethane | 25 µg/L No EPA limit set | 8/23 | SYR4 |
| Dibromochloromethane | 19.5 µg/L No EPA limit set | 7/23 | SYR4 |
| Monochloroacetic Acid | 18 µg/L No EPA limit set | 4/23 | SYR4 |
| Chromium | 17.3 µg/L 17% of the EPA limit 100 µg/L | 4/23 | SYR4 |
| Combined Uranium | 14 µg/L 47% of the EPA limit 30 µg/L | 16/23 | SYR4 |
| Trichloroacetic Acid | 14 µg/L No EPA limit set | 6/23 | SYR4 |
| Bromoform | 13 µg/L No EPA limit set | 10/23 | SYR4 |
| Gross Alpha, Excl. Radon And U | 11 pCi/L 73% of the EPA limit 15 pCi/L | 11/23 | SYR4 |
| Gross Beta Particle Activity | 9.1 pCi/L No EPA limit set | 5/23 | SYR4 |
| Toluene | 6.35 µg/L 0.6% of the EPA limit 1000 µg/L | 1/23 | SYR4 |
| Selenium | 4.1 µg/L 8.2% of the EPA limit 50 µg/L | 7/23 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.9 µg/L 65% of the EPA limit 6 µg/L | 3/23 | SYR4 |
| Di(2-ethylhexyl) Adipate | 3.3 µg/L 0.8% of the EPA limit 400 µg/L | 1/23 | SYR4 |
| Monobromoacetic Acid | 2.8 µg/L No EPA limit set | 3/23 | SYR4 |
| Beryllium, Total | 1.7 µg/L 43% of the EPA limit 4 µg/L | 1/23 | SYR4 |
| Combined Radium (-226 And -228) | 1.46 pCi/L 29% of the EPA limit 5 pCi/L | 11/23 | SYR4 |
| Tetrachloroethylene | 0.5400 µg/L 11% of the EPA limit 5 µg/L | 1/23 | SYR4 |
| Picloram | 0.3500 µg/L 0.1% of the EPA limit 500 µg/L | 1/23 | SYR4 |
| 2,4-D | 0.2300 µg/L 0.3% of the EPA limit 70 µg/L | 1/23 | SYR4 |
| Pfhxa | 0.0056 µg/L No EPA limit set | 1/23 | UCMR-5 |
| Pfpea | 0.0048 µg/L No EPA limit set | 1/23 | UCMR-5 |
| Lead | 0.0040 mg/L 27% of the EPA limit 0.0150 mg/L | 22/23 | LCR |
Water suppliers serving Las Vegas
Frequently asked questions about Las Vegas tap water
Is Las Vegas tap water safe to drink?
EPA testing detected 35 contaminants in the water serving Las Vegas. 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 Las Vegas?
23 public water suppliers report drinking-water monitoring for Las Vegas, Nevada to the EPA. Each is listed above with its population served.
What contaminants are in Las Vegas's water?
The contaminants EPA monitoring detected in Las Vegas include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Lead. 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.