STATE REPORT NV 122 HEALTH VIOLATIONS

Nevada Water Quality: 691 Violations in 254 ZIP Codes

254 ZIP codes · 123 water systems · IPC/UPC plumbing code · Updated 2026-06-03

Data: EPA SDWIS, NWS, State plumbing boards, Rewiring America Last verified: 2026-06-03

254
ZIP Codes
123
Water Systems
190
ZIPs with Violations
IPC/UPC
Plumbing Code
B · 81
Avg Safety Score
15%
High Radon Risk (Zone 1)
#4
of 51 States
77%
ZIPs Rated A or B
75%
ZIPs with Violations
B
Nevada average: 81/100 — ranked #4 of 51 states. 14 points above the national average (67). 77% of ZIP codes scored A or B.

If statewide compliance data is your starting point, Nevada offers a solid baseline — monitoring records across utility districts show strong adherence to federal standards, with health-based violations limited to a small share of the state's water systems.

Score Distribution

How Nevada's 254 ZIP codes are distributed across safety grades.

122
A
74
B
33
C
25
D
0
F
85-10070-8455-6940-540-39

Home Safety Scores by State

Loading map…
F (0-49) D (50-64) C (65-74) B (75-84) A (85+)

Data: EPA SDWIS, FEMA NFIP, EPA Radon, USGS Earthquake Hazards, NIFC Wildfire • 2026-06-03

Top 10 Safest ZIP Codes in Nevada

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 89019 JeanClark 99 A
2 89026 JeanClark 99 A
3 89028 LaughlinClark 99 A
4 89031 North Las VegasClark 99 A
5 89032 North Las VegasClark 99 A
6 89033 North Las VegasClark 99 A
7 89036 North Las VegasClark 99 A
8 89046 SearchlightClark 99 A
9 89085 North Las VegasClark 99 A
10 89086 North Las VegasClark 99 A

10 Lowest-Scoring ZIP Codes in Nevada

#ZIP CodeCityCountyScoreGradeViolations
1 89821 Crescent ValleyLander 40 D 0
2 89427 SchurzLyon 40 D 0
3 89422 MinaMineral 40 D 0
4 89420 LuningMineral 40 D 0
5 89318 Mc GillWhite Pine 40 D 0
6 89317 LundWhite Pine 40 D 0
7 89314 DuckwaterWhite Pine 40 D 0
8 89017 HikoLincoln 40 D 0
9 89704 Washoe ValleyDouglas 45 D 0
10 89411 GenoaDouglas 45 D 0

County Rankings

Water quality breakdown by county. 17 counties with data in Nevada.

Loading county map…
F (0-49) D (50-64) C (65-74) B (75-84) A (85+)

County-level aggregation of ZIP code safety scores • EPA SDWIS, FEMA NFIP, EPA Radon, USGS, NIFC

CountyAvg ScoreGradeZIPsBest ZIPWorst ZIP
Clark 91 A 125 89019 (99) 89163 (66)
Lincoln 57 C 5 89042 (66) 89017 (40)
Nye 76 B 10 89003 (83) 89020 (53)
Esmeralda 62 C 3 89013 (79) 89047 (53)
White Pine 53 D 7 89301 (67) 89318 (40)
Lander 52 D 3 89820 (61) 89821 (40)
Eureka 69 C 1 89316 (69) 89316 (69)
Washoe 78 B 38 89433 (83) 89424 (53)
Lyon 60 C 6 89403 (70) 89427 (40)
Humboldt 70 B 8 89414 (83) 89426 (53)
Churchill 81 B 3 89406 (81) 89496 (81)
Douglas 59 C 11 89444 (68) 89704 (45)
Mineral 49 D 3 89415 (66) 89422 (40)
Pershing 68 C 2 89419 (70) 89418 (66)
Storey 74 B 3 89440 (82) 89428 (63)
Carson 86 A 9 89702 (88) 89701 (77)
Elko 74 B 17 89815 (83) 89834 (53)

Most Common Contaminants in Nevada

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Consumer Confidence Report Rule Reporting 125 146 Yes
Surface Water Treatment Rule Treatment Technique 103 119 No
Total Trihalomethanes (TTHM) Disinfection Byproducts 94 100 No
Contaminant 0700 Other 80 81 Yes
Lead Inorganic 73 89 No
Stage 1 DBP Rule Treatment Technique 13 23 No
Revised Total Coliform Rule Microbiological 13 62 No
Barium Inorganic 10 16 Yes

Overview

We track water quality, weather alerts, plumbing regulations, and energy rebates for 254 ZIP codes across Nevada, covering 123 community water systems that serve approximately 3,043,482 people.

190 of 254 ZIP codes (75%) have recorded EPA violations. 122 health-based violations have been documented.

Plumbing Regulations

Nevada follows the Mixed — county-level adoption (Varies edition).

  • Plumbing code: IPC/UPC (Varies)
  • Homeowner DIY: Licensed plumber required
  • Water heater permit: Required
  • Annual backflow test: Required
  • Seismic strapping: Required

Full Nevada regulations →

Areas with Most Violations

ZIP Code City Safety Score Violations Health-Based System
89412 Gerlach C 24 0 Empire Mining Company
89405 Empire B 22 0 Empire Mining Company
89820 Battle Mountain C 19 3 Lander Company Sewer and Water District 1 Bm
89310 Austin C 17 2 Lander Company Sewer and Water District 2 Austin
89013 Goldfield B 14 1 Goldfield Town Water
89448 Zephyr Cove C 13 4 Zephyr Cove Water Utility Distr
89005 Boulder City A 11 0 Boulder City
89006 Boulder City A 11 0 Boulder City
89447 Yerington C 11 1 City of Yerington
89001 Alamo C 8 0 Alamo Sewer and Water Gid

Areas with No Violations

ZIP Code City Safety Score System Population
88901 The Lakes C NELLIS AIR FORCE BASE 19,081
88905 The Lakes C BOULDER CITY 15,000
89004 Blue Diamond A Blue Diamond Water Company 527
89007 Bunkerville B VIRGIN VALLEY WATER DISTRICT 26,000
89010 Dyer D GOLDFIELD TOWN WATER 350
89017 Hiko D ALAMO SEWER AND WATER GID 900
89019 Jean A Jean Utility Services Inc. 560
89020 Amargosa Valley D BEATTY WATER AND SANITATION DISTRICT 1,024
89021 Logandale B MOAPA VALLEY WATER DISTRICT 8,500
89022 Manhattan B Manhattan Town Water 40

Home Safety Score

Average Home Safety Score for Nevada: B (81/100)

Lead & Copper

  • Average lead level (90th percentile): 0.0021 mg/L (EPA action level: 0.015 mg/L)
  • 0 ZIP codes exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 38 ZIP codes (15%)
  • Moderate risk (Zone 2): 82 ZIP codes
  • Low risk (Zone 3): 125 ZIP codes

ZIP Code Reports for Nevada

Largest Communities

ZIP Code City Population Safety Grade Violations
89115 Las Vegas 1,959,429 A 4
89101 Las Vegas 1,940,348 A 4
89106 Las Vegas 1,940,348 A 4
89108 Las Vegas 1,940,348 A 4
89110 Las Vegas 1,940,348 A 4
89130 Las Vegas 1,940,348 A 4
89131 Las Vegas 1,940,348 A 4
89156 Las Vegas 1,940,348 A 4
89030 North Las Vegas 1,915,792 A 0
89032 North Las Vegas 1,915,792 A 0
89120 Las Vegas 1,900,367 A 4
89122 Las Vegas 1,900,367 A 4
89123 Las Vegas 1,900,367 A 4
89183 Las Vegas 1,900,367 A 4
89011 Henderson 1,876,180 A 1
89014 Henderson 1,876,180 A 1
89052 Henderson 1,876,180 A 1
89074 Henderson 1,876,180 A 1
89054 Sloan 1,875,871 A 5
89102 Las Vegas 1,563,833 A 4

Lowest Safety Scores

ZIP Code City Score Grade Violations
89017 Hiko 40 D 0
89314 Duckwater 40 D 0
89317 Lund 40 D 0
89318 Mc Gill 40 D 0
89420 Luning 40 D 0

Highest Safety Scores

ZIP Code City Score Grade Violations
89019 Jean 99 A 0
89026 Jean 99 A 0
89028 Laughlin 99 A 0
89031 North Las Vegas 99 A 0
89032 North Las Vegas 99 A 0

All 254 ZIP Codes in Nevada

Data Sources

Updated daily.

Frequently Asked Questions

Is the water safe to drink in Nevada?

Nevada has 123 community water systems serving 3,043,482 people across 254 ZIP codes. There are 691 recorded violations, including 122 health-based. 190 of 254 ZIP codes have at least one violation.

What plumbing code does Nevada follow?

Nevada follows the IPC/UPC plumbing code. A licensed plumber is generally required for plumbing work.

What is the radon risk in Nevada?

15% of ZIP codes in Nevada fall in EPA Radon Zone 1 (highest risk).

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