States › Nevada › Clark County

Clark County, NV Water Quality

Water quality data for 14 public water systems serving Clark County, Nevada — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 14 water systems · 22 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Clark County Earns a A

Clark County: 22 communities across 14 water systems. 100.0% have no open violations.

  • Median lead where detected: 2.08 ppb
  • 20 communities with a lead detection, 1 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 7 with significant inspection deficiencies
  • 100.0% of communities have no open violations
2.08 ppb
Median Lead Level
County-wide, 90th percentile
14
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
  • Moapa Town
    Not reported
    No federal limits exceeded on record
    B
  • Las Vegas
    2.08 ppb
    No federal limits exceeded on record
    A
  • Enterprise
    2.08 ppb
    No federal limits exceeded on record
    A
  • Spring Valley
    2.08 ppb
    No federal limits exceeded on record
    A
  • Paradise
    2.08 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Laughlin
    1.89 ppb
    Copper above the 1,300 ppb action level
    C
  • Henderson
    3.80 ppb
    Copper above the 1,300 ppb action level
    B
  • North Las Vegas
    1.38 ppb
    Copper above the 1,300 ppb action level
    B
  • Nellis AFB
    1.38 ppb
    Copper above the 1,300 ppb action level
    B
  • Mesquite
    Not detected
    4 significant inspection deficiencies
    B
County Lead Level — Median 2.08 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2.08 ppb — 13.9% of the federal action level
Systems by Lead Level
Under 5 ppb
19
5 – 10 ppb
1
No Data
2

All Cities in Clark County

Las Vegas 2.08 ppb A
Henderson 3.80 ppb B
North Las Vegas 1.38 ppb B
Enterprise 2.08 ppb A
Spring Valley 2.08 ppb A
Paradise 2.08 ppb A
Sunrise Manor 2.08 ppb A
Whitney 2.08 ppb A
Winchester 2.08 ppb A
Summerlin South 2.08 ppb A
Mesquite Not detected B
Boulder City 2.41 ppb A
Laughlin 1.89 ppb C
Moapa Valley 2.00 ppb A
Nellis AFB 1.38 ppb B
Indian Springs 0.81 ppb B
Searchlight 0.80 ppb B
Mount Charleston 7.88 ppb B
Blue Diamond 0.10 ppb B
Sandy Valley 0.84 ppb B
Cal-Nev-Ari 1.40 ppb B
Moapa Town Not reported B
Showing 22 cities
No active violations Active violations

About Clark County Drinking Water

Clark County is served by 14 water systems covering 22 communities. No community here has an open violation on record.

Of the communities reporting lead results, 20 recorded a detection, with a median of 2.08 ppb — 14% of the federal action level. 1 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 7 of them.

Frequently Asked Questions

Is Clark County tap water safe to drink?▼
No community in Clark County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Clark County?▼
Among communities with a detection the median is 2.08 ppb, 14% of the 15 ppb action level. 1 reported none detected and 1 reported no result.
How many water systems serve Clark County?▼
14 community water systems serve 22 communities here.
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