McKinley County, New Mexico
25 ZIP codes · Avg score 64/100 · Grade C · Updated 2026-06-04
The systems supplying McKinley County's 25 ZIP codes vary in performance — most meet minimum standards, but violations in select areas are on record.
How McKinley County Compares
How McKinley County Compares
McKinley County scores 2 points above the New Mexico state average (62/100) and 4 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: McKinley County, New Mexico
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.8 (asthma 13.9%, diabetes 18.6%)
Estimated additional annual cost per homeowner: $520, driven primarily by energy_code_gap
Infrastructure: 0.31% avg pipe failure probability, 4% of ZIPs at high risk
46.6% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across McKinley County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 21 violations. Past 5 years: 23 total (23 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $520
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
27,344 housing units in McKinley County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in McKinley County
Remediation costs are relatively manageable for most homeowners in McKinley County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for McKinley County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in McKinley County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Gallup Water System | 20,880 | 70 |
| 2 | Block a Well Company-op | 92 | 65 |
| 3 | Coal Basin Dwua | 116 | 57 |
| 4 | White Cliffs Mdwua | 323 | 54 |
| 5 | D & S Trailer Ranch | 109 | 54 |
16 total water systems serve McKinley County.
All ZIP Codes in McKinley County
25 ZIP codes tracked in McKinley County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 87321 | Ramah | 82 | B | 2 | $160K |
| 2 | 87347 | Jamestown | 82 | B | 2 | $117K |
| 3 | 87375 | Yatahey | 82 | B | 3 | $37K |
| 4 | 87045 | Prewitt | 81 | B | 2 (1 health) | $57K |
| 5 | 87323 | Thoreau | 81 | B | 9 (2 health) | $103K |
| 6 | 87302 | Gallup | 76 | B | 18 (3 health) | — |
| 7 | 87305 | Gallup | 76 | B | 18 (3 health) | $50K |
| 8 | 87312 | Continental Divide | 76 | B | 8 (3 health) | — |
| 9 | 87319 | Mentmore | 76 | B | 11 (3 health) | $30K |
| 10 | 87301 | Gallup | 72 | B | 18 (3 health) | $135K |
| 11 | 87317 | Gamerco | 71 | B | 2 | — |
| 12 | 87310 | Brimhall | 53 | D | 0 | $67K |
| 13 | 87311 | Church Rock | 53 | D | 0 | $39K |
| 14 | 87313 | Crownpoint | 53 | D | 0 | $64K |
| 15 | 87315 | Fence Lake | 53 | D | 0 | — |
| 16 | 87316 | Fort Wingate | 53 | D | 0 | $77K |
| 17 | 87320 | Mexican Springs | 53 | D | 0 | $39K |
| 18 | 87322 | Rehoboth | 53 | D | 0 | $55K |
| 19 | 87325 | Tohatchi | 53 | D | 0 | $64K |
| 20 | 87326 | Vanderwagen | 53 | D | 0 | $51K |
| 21 | 87327 | Zuni | 53 | D | 0 | $79K |
| 22 | 87328 | Navajo | 53 | D | 0 | $61K |
| 23 | 87357 | Pinehill | 53 | D | 0 | $78K |
| 24 | 87364 | Sheep Springs | 53 | D | 0 | $81K |
| 25 | 87365 | Smith Lake | 53 | D | 0 | — |
Recommended Buyer Guides for McKinley County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for McKinley County, New Mexico
Overview
McKinley County in New Mexico covers 25 ZIP codes with an average Home Safety Score of C (64/100).
11 of 25 ZIP codes have recorded EPA violations. 18 health-based violations have been documented.
← Back to New Mexico water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.