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Tap water quality report

Henderson, NV

EPA monitoring detected 26 contaminants across the 1 water supplier serving Henderson. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
336,534
people served
26
contaminants found
Nevada rankings Lead in Nevada PFAS in Nevada

What was found in Henderson'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
810 µg/L 20%
of the EPA limit 4000 µg/L
 1/1 SYR4
Nitrate
680 µg/L 6.8%
of the EPA limit 10000 µg/L
 1/1 SYR4
Nitrate-Nitrite
680 µg/L 6.8%
of the EPA limit 10000 µg/L
 1/1 SYR4
Barium
140 µg/L 7%
of the EPA limit 2000 µg/L
 1/1 SYR4
TTHM
103 µg/L 129%
of the EPA limit, in the worst sample — 80 µg/L
 1/1 SYR4
Lithium
57.8 µg/L
No EPA limit set
 1/1 UCMR-5
Chloroform
52.3 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
43 µg/L 72%
of the EPA limit 60 µg/L
 1/1 SYR4
Copper
38.6 µg/L 3%
of the EPA limit 1300 µg/L
 1/1 SYR4
Bromodichloromethane
31 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
29 µg/L
No EPA limit set
 1/1 SYR4
Dibromochloromethane
21 µg/L
No EPA limit set
 1/1 SYR4
Trichloroacetic Acid
13 µg/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
12.8 µg/L
No EPA limit set
 1/1 SYR4
Monobromoacetic Acid
11 µg/L
No EPA limit set
 1/1 SYR4
Monochloroacetic Acid
5.7 µg/L
No EPA limit set
 1/1 SYR4
Glyphosate
5.1 µg/L 0.7%
of the EPA limit 700 µg/L
 1/1 SYR4
Combined Uranium
4.6 µg/L 15%
of the EPA limit 30 µg/L
 1/1 SYR4
Gross Alpha, Excl. Radon And U
4.1 pCi/L 27%
of the EPA limit 15 pCi/L
 1/1 SYR4
Bromoform
3.8 µg/L
No EPA limit set
 1/1 SYR4
Selenium
3 µg/L 6%
of the EPA limit 50 µg/L
 1/1 SYR4
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 1/1 SYR4
Di(2-ethylhexyl) Phthalate
1.5 µg/L 25%
of the EPA limit 6 µg/L
 1/1 SYR4
Combined Radium (-226 And -228)
0.7200 pCi/L 14%
of the EPA limit 5 pCi/L
 1/1 SYR4
Diquat
0.4800 µg/L 2.4%
of the EPA limit 20 µg/L
 1/1 SYR4
Lead
0.0038 mg/L 25%
of the EPA limit 0.0150 mg/L
 1/1 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 Henderson

SupplierPopulation served
HENDERSON CITY OF 336,534

Frequently asked questions about Henderson tap water

Is Henderson tap water safe to drink?

EPA testing detected 26 contaminants in the water serving Henderson. 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 Henderson?

1 public water supplier report drinking-water monitoring for Henderson, Nevada to the EPA. Each is listed above with its population served.

What contaminants are in Henderson's water?

The contaminants EPA monitoring detected in Henderson include Fluoride, Nitrate, Nitrate-Nitrite, Barium, TTHM. 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.