Códigos ZIP con más infracciones de la EPA en Nevada

Out of 31 ZIP codes with data in Nevada, these are the highest-ranked areas for recorded epa violations. See also: National ZIP Codes with Most EPA Water Violations | All Nevada Rankings

Statistic	Value
ZIP codes ranked	31
Highest value	103
Median value	4
State	Nevada

Top 31 Worst ZIP Codes

Rank	ZIP Code	City	State	Recorded EPA Violations	Safety Score
1	89423	Minden	NV	103	67/100
2	89448	Zephyr Cove	NV	62	—
3	89449	Stateline	NV	60	50/100
4	89413	Glenbrook	NV	37	—
5	89429	Silver Springs	NV	33	—
6	89048	Pahrump	NV	32	72/100
7	89301	Ely	NV	27	66/100
8	89410	Gardnerville	NV	24	57/100
9	89506	Reno	NV	24	65/100
10	89508	Reno	NV	23	66/100
11	89444	Wellington	NV	19	—
12	89447	Yerington	NV	15	62/100
13	89445	Winnemucca	NV	6	—
14	89801	Elko	NV	5	65/100
15	89451	Incline Village	NV	4	82/100
16	89460	Gardnerville	NV	4	64/100
17	89706	Carson City	NV	4	—
18	89061	Pahrump	NV	3	—
19	89107	Las Vegas	NV	3	91/100
20	89060	Pahrump	NV	2	—
21	89121	Las Vegas	NV	2	91/100
22	89406	Fallon	NV	2	83/100
23	89408	Fernley	NV	2	49/100
24	89436	Sparks	NV	2	66/100
25	89441	Sparks	NV	2	66/100
26	89040	Overton	NV	1	91/100
27	89081	North Las Vegas	NV	1	91/100
28	89115	Las Vegas	NV	1	91/100
29	89521	Reno	NV	1	66/100
30	89701	Carson City	NV	1	—
31	89703	Carson City	NV	1	—

Methodology

Violation counts include all types recorded in the EPA SDWIS database: Maximum Contaminant Level (MCL) violations, treatment technique violations, and monitoring/reporting violations. Both resolved and unresolved violations are counted. Higher counts may reflect longer system histories or larger service areas.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-08-31.

Frequently Asked Questions

What counts as an EPA water violation?

EPA violations include exceeding Maximum Contaminant Levels (MCLs), failing to treat water properly (treatment technique violations), and not testing or reporting on schedule (monitoring violations). Health-based violations are the most serious.

Does a high violation count mean the water is unsafe now?

Not necessarily. Many violations are historical or monitoring-related. However, a pattern of repeated violations indicates systemic issues with water system management or infrastructure.

Códigos ZIP con más infracciones de la EPA en Nevada — 2026