What was found in Las Vegas's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 4810 µg/L 48% of the EPA limit 10000 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 8225 µg/L — BERMUDA PALMS MANAGEMENT LLC · 60 people · 2019 | 17/23 | SYR4 |
| Nitrate-Nitrite | 5100 µg/L 51% of the EPA limit 10000 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 7255 µg/L — BERMUDA PALMS MANAGEMENT LLC · 60 people · 2019 | 17/23 | SYR4 |
| Copper | 10.22 µg/L 0.8% of the EPA limit 1300 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 1224.4 µg/L — SIGNATURE TOWERS · 2,356 people · 2019 | 17/23 | SYR4 |
| Fluoride | 728 µg/L 18% of the EPA limit 4000 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 1080 µg/L — PRIMM VALLEY CASINO RESORTS · 7,000 people · 2019 | 15/23 | SYR4 |
| Lead | 2.68 µg/L 18% of the EPA limit 15 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 196.46 µg/L — SIGNATURE TOWERS · 2,356 people · 2019 | 13/23 | SYR4 |
| Barium | 84.93 µg/L 4.2% of the EPA limit 2000 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 130 µg/L — RAINBOW GARDENS WATER USERS · 45 people · 2017 | 13/23 | SYR4 |
| TTHM | 74 µg/L 93% of the EPA limit 80 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 10/23 | SYR4 |
| Lithium | 43.3 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2025
Highest in the city: 62.6 µg/L — PRIMM VALLEY CASINO RESORTS · 7,000 people · 2025 | 2/23 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 42.91 µg/L 72% of the EPA limit 60 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 9/23 | SYR4 |
| Arsenic | 3.3 µg/L 33% of the EPA limit 10 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 40.2 µg/L — ROARK ESTATES WATER ASSOC · 60 people · 2019 | 14/23 | SYR4 |
| Chloroform | 36 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 38.5 µg/L — SIGNATURE TOWERS · 2,356 people · 2019 | 9/23 | SYR4 |
| Dichloroacetic Acid | 24.64 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 4/23 | SYR4 |
| Bromodichloromethane | 22 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 8/23 | SYR4 |
| Chromium | 5.5 µg/L 5.5% of the EPA limit 100 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 16.533 µg/L — SOUTHERN DESERT CORRECTIONAL CTR NDOC · 6,200 people · 2018 | 4/23 | SYR4 |
| Dibromochloromethane | 16 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 7/23 | SYR4 |
| Monochloroacetic Acid | 3.6 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 15.765 µg/L — SPRING MOUNTAIN YOUTH CAMP · 120 people · 2019 | 4/23 | SYR4 |
| Combined Uranium | 2.9 µg/L 9.7% of the EPA limit 30 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 13.7 µg/L — PRIMM VALLEY CASINO RESORTS · 7,000 people · 2017 | 16/23 | SYR4 |
| Bromoform | 3.4 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 12.5 µg/L — PRIMM VALLEY CASINO RESORTS · 7,000 people · 2019 | 10/23 | SYR4 |
| Trichloroacetic Acid | 11 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 6/23 | SYR4 |
| Gross Beta Particle Activity | 9.1 pCi/L No EPA limit set Highest in the city: ROARK ESTATES WATER ASSOC · 60 people · 2012 | 5/23 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8 pCi/L 53% of the EPA limit 15 pCi/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 9 pCi/L — PRIMM VALLEY CASINO RESORTS · 7,000 people · 2015 | 11/23 | SYR4 |
| Toluene | 6.1925 µg/L 0.6% of the EPA limit 1000 µg/L Highest in the city: HILLCREST MANOR WATER USERS ASSOCIATION · 450 people · 2019 | 1/23 | SYR4 |
| Dibromoacetic Acid | 4.4 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 5.68 µg/L — SIGNATURE TOWERS · 2,356 people · 2019 | 5/23 | SYR4 |
| Selenium | 2.51 µg/L 5% of the EPA limit 50 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 4.1 µg/L — TROUT CANYON LAND AND WATER USERS ASSOC · 45 people · 2013 | 7/23 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.6 µg/L 60% of the EPA limit 6 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 3/23 | SYR4 |
| Di(2-ethylhexyl) Adipate | 3.3 µg/L 0.8% of the EPA limit 400 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 1/23 | SYR4 |
| Monobromoacetic Acid | 1.6 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 2.8 µg/L — PRIMM VALLEY CASINO RESORTS · 7,000 people · 2019 | 3/23 | SYR4 |
| Beryllium, Total | 1.7 µg/L 43% of the EPA limit 4 µg/L Highest in the city: TORREY PINES TINA LN WTR ASSOC · 70 people · 2014 | 1/23 | SYR4 |
| Combined Radium (-226 And -228) | 1.232 pCi/L 25% of the EPA limit 5 pCi/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019
Highest in the city: 1.2728 pCi/L — SOUTHERN DESERT CORRECTIONAL CTR NDOC · 6,200 people · 2016 | 11/23 | SYR4 |
| Tetrachloroethylene | 0.5400 µg/L 11% of the EPA limit 5 µg/L Highest in the city: HILLCREST MANOR WATER USERS ASSOCIATION · 450 people · 2019 | 1/23 | SYR4 |
| Picloram | 0.3460 µg/L 0.1% of the EPA limit 500 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 1/23 | SYR4 |
| 2,4-D | 0.2300 µg/L 0.3% of the EPA limit 70 µg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2019 | 1/23 | SYR4 |
| Pfhxa | 0.0056 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2025 | 1/23 | UCMR-5 |
| Pfpea | 0.0048 µg/L No EPA limit set Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2025 | 1/23 | UCMR-5 |
| Lead | 0.0021 mg/L 14% of the EPA limit 0.0150 mg/L Main supplier: LAS VEGAS VALLEY WATER DISTRICT · 1,539,277 people · 2025
Highest in the city: 0.0040 mg/L — RAINBOW GARDENS WATER USERS · 45 people · 2018 | 22/23 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
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 level at the main supplier 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.