How does Las Vegas tap water hold up under EPA scrutiny? Above average for NV - documented violations are uncommon and the safety grade reflects a clean overall record.

Data: EPA SDWIS, FEMA NFIP, Census ACS Last verified: 2026-07-19

Water Quality in Las Vegas

We track water quality and home safety data for 77 ZIP codes in Las Vegas, Nevada, covering 8 community water systems serving approximately 1,625,332 people.

77 of 77 ZIP codes (100%) have recorded EPA violations - 308 total, including 77 health-based violations.

Average Home Safety Score: A (91/100)

Water sources: Groundwater, Surface water.

Top Contaminants

Lead Risk

• Average lead level (90th percentile): 0.0021 mg/L
• 29% of housing built before 1986 (when lead solder was banned)
• 1% of housing built before 1950 (when lead pipes were standard)
• Median year built: 1994
• Most common estimated pipe material: Copper
• Lead exposure risk score: 28/100
• Estimated lead service line probability: 9%
• 7 ZIP codes classified as high or very high lead risk

Housing Age Distribution

664,792 total housing units across 77 ZIP codes:

Flood Risk

FEMA National Flood Insurance Program data for Las Vegas:

• 469 flood insurance claims on record
• $7,269,569 total paid out
• $15,500 average claim payout
• Dominant FEMA flood zone: X (Low risk)
• 15 of 77 ZIP codes in high-risk flood zones (A/V)

Radon Risk

Dominant EPA radon zone: Zone 3 (Low Risk)

• Zone 1 (High): 0 ZIP codes
• Zone 2 (Moderate): 0 ZIP codes
• Zone 3 (Low): 77 ZIP codes

Neighborhoods by Safety Score

Safest Areas

Areas Needing Attention

What Las Vegas Residents Can Do

Test Your Water

• Order a certified lab test - home test kits cost $20–50 and cover lead, bacteria, and common contaminants
• Request your utility's CCR (Consumer Confidence Report) - your water provider must publish this annually
• Check your ZIP code - each area in Las Vegas has different water systems and risk levels

Filter Your Water

• NSF-certified pitcher filter removes chlorine taste and some contaminants ($20–40)
• Reverse osmosis system removes 95%+ of contaminants including lead, PFAS, and nitrates ($150–400)

Stay Informed

• Visit your ZIP code report for detailed, address-level data
• Sign up for EPA water quality alerts
• Review the annual water quality report from your local utility

All ZIP Codes in Las Vegas

• 89101 [A] - 4 violations ⚠
• 89102 [A] - 4 violations ⚠
• 89103 [A] - 4 violations ⚠
• 89104 [A] - 4 violations ⚠
• 89105 [A] - 4 violations ⚠
• 89106 [A] - 4 violations ⚠
• 89107 [A] - 4 violations ⚠
• 89108 [A] - 4 violations ⚠
• 89109 [A] - 4 violations ⚠
• 89110 [A] - 4 violations ⚠
• 89111 [A] - 4 violations ⚠
• 89112 [A] - 4 violations ⚠
• 89113 [A] - 4 violations ⚠
• 89114 [A] - 4 violations ⚠
• 89115 [A] - 4 violations ⚠
• 89116 [A] - 4 violations ⚠
• 89117 [A] - 4 violations ⚠
• 89118 [A] - 4 violations ⚠
• 89119 [A] - 4 violations ⚠
• 89120 [A] - 4 violations ⚠
• 89121 [A] - 4 violations ⚠
• 89122 [A] - 4 violations ⚠
• 89123 [A] - 4 violations ⚠
• 89124 [A] - 4 violations ⚠
• 89125 [A] - 4 violations ⚠
• 89126 [A] - 4 violations ⚠
• 89127 [A] - 4 violations ⚠
• 89128 [A] - 4 violations ⚠
• 89129 [A] - 4 violations ⚠
• 89130 [A] - 4 violations ⚠
• 89131 [A] - 4 violations ⚠
• 89132 [A] - 4 violations ⚠
• 89133 [A] - 4 violations ⚠
• 89134 [A] - 4 violations ⚠
• 89135 [A] - 4 violations ⚠
• 89136 [A] - 4 violations ⚠
• 89137 [A] - 4 violations ⚠
• 89138 [A] - 4 violations ⚠
• 89139 [A] - 4 violations ⚠
• 89140 [A] - 4 violations ⚠
• 89141 [A] - 4 violations ⚠
• 89142 [A] - 4 violations ⚠
• 89143 [A] - 4 violations ⚠
• 89144 [A] - 4 violations ⚠
• 89145 [A] - 4 violations ⚠
• 89146 [A] - 4 violations ⚠
• 89147 [A] - 4 violations ⚠
• 89148 [A] - 4 violations ⚠
• 89149 [A] - 4 violations ⚠
• 89150 [A] - 4 violations ⚠
• 89151 [A] - 4 violations ⚠
• 89152 [A] - 4 violations ⚠
• 89153 [A] - 4 violations ⚠
• 89154 [A] - 4 violations ⚠
• 89155 [A] - 4 violations ⚠
• 89156 [A] - 4 violations ⚠
• 89157 [A] - 4 violations ⚠
• 89158 [A] - 4 violations ⚠
• 89159 [A] - 4 violations ⚠
• 89160 [A] - 4 violations ⚠
• 89161 [A] - 4 violations ⚠
• 89162 [A] - 4 violations ⚠
• 89164 [A] - 4 violations ⚠
• 89165 [A] - 4 violations ⚠
• 89166 [A] - 4 violations ⚠
• 89169 [A] - 4 violations ⚠
• 89170 [A] - 4 violations ⚠
• 89173 [A] - 4 violations ⚠
• 89177 [A] - 4 violations ⚠
• 89178 [A] - 4 violations ⚠
• 89179 [A] - 4 violations ⚠
• 89180 [A] - 4 violations ⚠
• 89183 [A] - 4 violations ⚠
• 89185 [A] - 4 violations ⚠
• 89193 [A] - 4 violations ⚠
• 89195 [A] - 4 violations ⚠
• 89199 [A] - 4 violations ⚠

Frequently Asked Questions

Is the tap water safe to drink in Las Vegas, NV?

Las Vegas has an average Home Safety Score of 91/100 (grade A) across 77 ZIP codes. There are 308 recorded EPA violations, 77 of which are health-based. Safety varies by neighborhood - check your specific ZIP code report for details.

Does Las Vegas have lead in the water?

The average 90th-percentile lead level across Las Vegas is 0.0021 mg/L, below the EPA action level of 0.015 mg/L. No ZIP codes currently exceed the EPA lead action level. About 29% of housing was built before 1986, when lead solder was banned.

Is Las Vegas at risk for flooding?

FEMA data shows 469 flood insurance claims in Las Vegas ZIP codes, with an average payout of $15,500. 15 of 77 ZIP codes are in high-risk FEMA flood zones (A or V).

Are there lead pipes in Las Vegas homes?

29% of Las Vegas housing was built before 1986, when lead solder was common in plumbing. 1% was built before 1950, when lead pipes were standard. The most common estimated pipe material is Copper. The estimated probability of lead service lines is 9%. We recommend testing your water if your home was built before 1986.

What contaminants have been found in Las Vegas water?

The most common contaminants by violation count are Total Trihalomethanes (TTHM), Surface Water Treatment Rule, Consumer Confidence Report Rule. Across 77 ZIP codes, 77 have recorded EPA violations. Check your ZIP code report for the specific contaminants in your area.

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Housing age: U.S. Census Bureau American Community Survey
• Flood data: FEMA National Flood Insurance Program
• Lead exposure: Composite risk score based on housing age, water lead levels, and service line estimates
• Radon: EPA Map of Radon Zones

Updated daily.

Housing Age Profile

The year 1986 marks a critical threshold in residential plumbing safety: that's when the federal government banned lead solder from new construction, closing a major pathway for lead entering household drinking water via pipe joints. Las Vegas's median build year of 1994 signals that most of the city's housing was built under the newer standard. The distribution above tells the full story - the post-1986 majority lowers aggregate risk, but the pre-1986 share still deserves scrutiny from anyone living in or purchasing an older home.

1994

Median Year Built

0%

Pre-1986 (Lead Paint Risk)

0%

Pre-1970 (Lead Pipes Risk)

Most homes in Las Vegas were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Protecting Children from Lead in Las Vegas

0.0021

mg/L Avg Lead (Limit: 0.015)

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Lead risk in Las Vegas appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Climate-Related Water Risk for Las Vegas

A moderate NFIP record for Las Vegas - 469 insurance claims paired with 0% of ZIP codes in FEMA flood zones - points to a flood history where water-quality pathways have likely been periodically relevant.

469

Total FEMA Flood Claims

~23

Est. Claims/Year

Las Vegas has a moderate flood history with 469 FEMA claims. Flood events can contaminate drinking water and overwhelm treatment systems.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure.

Residents in flood-prone areas should consider flood insurance even outside FEMA zones - over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.

Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.