States › New Mexico › McKinley County

McKinley County, NM Water Quality

Water quality data for 12 public water systems serving McKinley County, New Mexico — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 12 water systems · 16 cities
⚠️
Caution Advised — Some Systems Need Attention

Some systems have elevated lead levels or active violations. Check your specific city below.

C

McKinley County Earns a C

McKinley County: 16 communities across 12 water systems. 68.8% have no open violations.

  • Median lead where detected: 3.60 ppb
  • 12 communities with a lead detection, 4 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 14 with significant inspection deficiencies
  • 68.8% of communities have no open violations
3.6 ppb
Median Lead Level
County-wide, 90th percentile
12
Water Systems
Active CWS & NTNCWS
68%
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
  • Zuni Pueblo
    1.90 ppb
    1 significant inspection deficiency
    A
  • Black Rock
    1.90 ppb
    1 significant inspection deficiency
    A
  • Ramah
    1.50 ppb
    4 health-based violations since 2015
    B
  • Gamerco
    8.30 ppb
    7 health-based violations since 2015
    B
  • Thoreau
    4.30 ppb
    2 significant inspection deficiencies
    C
⚠ Needs Attention
County Lead Level — Median 3.6 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3.6 ppb — 24% of the federal action level
Systems by Lead Level
Under 5 ppb
8
5 – 10 ppb
3
10 – 15 ppb
1
No Data
4

All Cities in McKinley County

Gallup Not detected F
Zuni Pueblo 1.90 ppb A
Gamerco 8.30 ppb B
Thoreau 4.30 ppb C
Black Rock 1.90 ppb A
Ramah 1.50 ppb B
Yah-ta-hey 4.20 ppb C
White Cliffs 2.00 ppb C
Jamestown 13.00 ppb C
Continental Divide 1.00 ppb F
Williams Acres 9.00 ppb D
Homer C Jones 5.30 ppb C
Sundance Not detected F
Purty Rock 3.00 ppb C
Church Rock Not detected F
Catalpa Canyon Not detected F
Showing 16 cities
No active violations Active violations

About McKinley County Drinking Water

McKinley County is served by 12 water systems covering 16 communities. 69% have no open violations.

Of the communities reporting lead results, 12 recorded a detection, with a median of 3.60 ppb — 24% of the federal action level. 4 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 14 of them.

Frequently Asked Questions

Is McKinley County tap water safe to drink?▼
69% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in McKinley County?▼
Among communities with a detection the median is 3.60 ppb, 24% of the 15 ppb action level. 4 reported none detected and 0 reported no result.
How many water systems serve McKinley County?▼
12 community water systems serve 16 communities here.
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