Tap WaterIndex

← California

Tap water quality report

Death Valley, CA

EPA monitoring detected 14 contaminants across the 3 water suppliers serving Death Valley. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

3
water suppliers
413
people served
14
contaminants found
California rankings Lead in California PFAS in California

What was found in Death Valley's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
5400 µg/L 135%
of the EPA limit, in the worst sample — 4000 µg/L
 3/3 SYR4
TTHM
39.3 µg/L 49%
of the EPA limit 80 µg/L
 3/3 SYR4
Arsenic
33 µg/L 330%
of the EPA limit, in the worst sample — 10 µg/L
 2/3 SYR4
Bromoform
21.3 µg/L
No EPA limit set
 3/3 SYR4
Dibromochloromethane
16.1 µg/L
No EPA limit set
 3/3 SYR4
Total Haloacetic Acids (HAA5)
11.7 µg/L 19%
of the EPA limit 60 µg/L
 3/3 SYR4
Bromodichloromethane
9.9 µg/L
No EPA limit set
 3/3 SYR4
Dibromoacetic Acid
8.9 µg/L
No EPA limit set
 3/3 SYR4
Combined Uranium
6.407 µg/L 21%
of the EPA limit 30 µg/L
 2/3 SYR4
Chloroform
5.8 µg/L
No EPA limit set
 3/3 SYR4
Dichloroacetic Acid
4.9 µg/L
No EPA limit set
 3/3 SYR4
Monobromoacetic Acid
1 µg/L
No EPA limit set
 1/3 SYR4
Toluene
0.6000 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/3 SYR4
Lead
0.4830 mg/L 3220%
above the EPA limit of 0.0150 mg/L
 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 single worst sample on record — 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 Death Valley

SupplierPopulation served
NPS - DEATH VALLEY, STOVEPIPE WELLS 175
NPS - DEATH VALLEY, FURNACE CREEK 150
NPS - DEATH VALLEY, COW CREEK/NEVARES 88

Frequently asked questions about Death Valley tap water

Is Death Valley tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Death Valley. 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 Death Valley?

3 public water suppliers report drinking-water monitoring for Death Valley, California to the EPA. Each is listed above with its population served.

What contaminants are in Death Valley's water?

The contaminants EPA monitoring detected in Death Valley include Fluoride, TTHM, Arsenic, Bromoform, Dibromochloromethane. 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.