States › Nevada › Lyon County

Lyon County, NV Water Quality

Water quality data for 6 public water systems serving Lyon County, Nevada — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 6 water systems · 6 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Lyon County Earns a B

Lyon County: 6 communities across 6 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.90 ppb
  • 4 communities with a lead detection, 2 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 4 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.9 ppb
Median Lead Level
County-wide, 90th percentile
6
Water Systems
Active CWS & NTNCWS
100%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Dayton
    0.80 ppb
    No federal limits exceeded on record
    A
  • Silver City
    2.00 ppb
    2 significant inspection deficiencies
    B
  • Stagecoach
    Not detected
    2 significant inspection deficiencies
    B
  • Yerington
    1.80 ppb
    5 significant inspection deficiencies
    C
  • Fernley
    Not detected
    PFAS above the limit at 1 of 1 sampling points
    C
⚠ Needs Attention
  • Fernley
    Not detected
    PFAS above the limit at 1 of 1 sampling points
    C
  • Silver Springs
    8.00 ppb
    3 significant inspection deficiencies
    C
  • Yerington
    1.80 ppb
    5 significant inspection deficiencies
    C
  • Stagecoach
    Not detected
    2 significant inspection deficiencies
    B
  • Silver City
    2.00 ppb
    2 significant inspection deficiencies
    B
County Lead Level — Median 1.9 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.9 ppb — 12.7% of the federal action level
Systems by Lead Level
Under 5 ppb
3
5 – 10 ppb
1
No Data
2

All Cities in Lyon County

Fernley Not detected C
Dayton 0.80 ppb A
Silver Springs 8.00 ppb C
Yerington 1.80 ppb C
Stagecoach Not detected B
Silver City 2.00 ppb B
Showing 6 cities
No active violations Active violations

About Lyon County Drinking Water

Lyon County is served by 6 water systems covering 6 communities. No community here has an open violation on record.

Of the communities reporting lead results, 4 recorded a detection, with a median of 1.90 ppb — 13% of the federal action level. 2 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 6 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 4 of them.

Frequently Asked Questions

Is Lyon County tap water safe to drink?▼
No community in Lyon County has an open violation on record. 1 of 6 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Lyon County?▼
Among communities with a detection the median is 1.90 ppb, 13% of the 15 ppb action level. 2 reported none detected and 0 reported no result.
How many water systems serve Lyon County?▼
6 community water systems serve 6 communities here.
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