Water Quality Report · Updated October 07, 2026
LAS VEGAS VALLEY WATER DISTRICT
LAS VEGAS VALLEY WATER DISTRICT delivers tap water graded D (55/100) by TapWaterSafety.org. The utility serves approximately 1,539,277 residents in LAS VEGAS, Nevada using surface water (purchased). The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Arsenic significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 702-862-3776.
Is LAS VEGAS tap water safe to drink?
LAS VEGAS VALLEY WATER DISTRICT delivers tap water that earns a grade of D (55/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including haloacetic acids (haa9) significantly above health guideline.
The utility serves 1,539,277 residents in LAS VEGAS, drawing from surface water (purchased).
Public testing data identifies 17 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Arsenic, Total trihalomethanes (TTHMs), Bromodichloromethane, Haloacetic acids (HAA5), Dibromochloromethane, Dibromoacetic acid, Dichloroacetic acid, Trichloroacetic acid, Chloroform, Bromate*, Nitrate, Nitrate and nitrite, Chromium (hexavalent), Bromoform, Uranium, Radium, combined (-226 and -228). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for LAS VEGAS VALLEY WATER DISTRICT (system ID NV0000090) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for LAS VEGAS residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for LAS VEGAS VALLEY WATER DISTRICT.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 43.2 ppb, 721x above the EWG health guideline of 0.06 ppb.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 1.8 ppb, 451x above the EWG health guideline of 0.004 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 49.4 ppb, 329x above the EWG health guideline of 0.15 ppb.
Contact LAS VEGAS VALLEY WATER DISTRICT
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for LAS VEGAS
Filters matched to the specific contaminants in this water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 55/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
43.2 ppb | 0.06 | — | — | — | — | — | 721× over |
| Arsenic Heavy metal |
1.8 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 451× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
49.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 329× over |
| Bromodichloromethane Disinfection byproduct |
15.3 ppb | 0.06 | — | — | — | — | — | 255× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
24.4 ppb | 0.1 | 60.0 | 60 | — | — | — | 244× over |
| Dibromochloromethane Disinfection byproduct |
12.8 ppb | 0.1 | — | — | — | — | — | 128× over |
| Dibromoacetic acid Disinfection byproduct |
3.68 ppb | 0.03 | — | — | — | — | — | 123× over |
| Dichloroacetic acid Disinfection byproduct |
14.3 ppb | 0.2 | — | — | — | — | — | 71× over |
| Trichloroacetic acid Disinfection byproduct |
5.78 ppb | 0.1 | — | — | — | — | — | 58× over |
| Chloroform Disinfection byproduct |
19.0 ppb | 0.4 | — | — | — | — | — | 47× over |
| Bromate* Disinfection byproduct |
4.04 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 40× over |
| Nitrate Inorganic |
1.77 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 13× over |
| Nitrate and nitrite Inorganic |
1.77 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 13× over |
| Chromium (hexavalent) Heavy metal |
0.204 ppb | 0.02 | — | — | — | — | — | 10× over |
| Bromoform Disinfection byproduct |
2.43 ppb | 0.5 | — | — | — | — | — | 4.9× over |
| Uranium Radiological |
1.38 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 3.2× over |
| Radium, combined (-226 and -228) Radiological |
0.11 pCi/L | 0.05 | 5.0 | — | — | — | — | 2.1× over |
| Perchlorate* Disinfection byproduct |
0.825 ppb | 1.0 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
79.5 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
58.3 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Selenium Heavy metal |
1.33 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Molybdenum Other |
0.726 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.366 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.591 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.08 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.123 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.957 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
0.257 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Di(2-ethylhexyl) adipate Other |
0.0195 ppb | 200.0 | 400.0 | — | — | — | — | Below guideline |
| Bromide Other |
70.2 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.476 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Testosterone Other |
0.011 ppt | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
LAS VEGAS VALLEY WATER DISTRICT service area
This water system serves 1 community in Clark County, Nevada. Click any city for its dedicated tap water quality page.
Find the right filter for LAS VEGAS water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.