Mesa County, Colorado
19 ZIP codes · Avg score 59/100 · Grade C · Updated 2026-06-03
Mesa County's water quality grade reflects a middle-ground assessment — its 19 ZIP codes range from fully compliant to violation-flagged.
How Mesa County Compares
How Mesa County Compares
Mesa County scores 1 points below the Colorado state average (60/100) and 9 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Mesa County, Colorado
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.1 (asthma 11.4%, diabetes 9.8%)
Estimated additional annual cost per homeowner: $819, driven primarily by wildfire
Infrastructure: 0.307% avg pipe failure probability, 5% of ZIPs at high risk
44.6% of homes built before 1978 (lead paint era)
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: $819
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
67,773 housing units in Mesa 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 Mesa County
Remediation costs are relatively manageable for most homeowners in Mesa 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 Mesa 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 Mesa County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Ute Wcd | 91,186 | 18 |
| 2 | City of Grand Junction | 26,000 | 14 |
| 3 | Kannah Creek | 435 | 14 |
| 4 | Twin Rivers Mhp, Llc | 67 | 14 |
| 5 | Little Park Water Coop | 51 | 14 |
11 total water systems serve Mesa County.
All ZIP Codes in Mesa County
19 ZIP codes tracked in Mesa County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 81520 | Clifton | 70 | B | 0 | $228K |
| 2 | 81624 | Collbran | 70 | B | 0 | $467K |
| 3 | 81501 | Grand Junction | 69 | C | 2 | $283K |
| 4 | 81503 | Grand Junction | 69 | C | 2 | $308K |
| 5 | 81504 | Grand Junction | 69 | C | 2 | $290K |
| 6 | 81505 | Grand Junction | 69 | C | 2 | $437K |
| 7 | 81506 | Grand Junction | 69 | C | 2 | $428K |
| 8 | 81526 | Palisade | 68 | C | 4 | $449K |
| 9 | 81502 | Grand Junction | 65 | C | 2 | — |
| 10 | 81522 | Gateway | 65 | C | 3 | — |
| 11 | 81507 | Grand Junction | 64 | C | 2 | $491K |
| 12 | 81643 | Mesa | 64 | C | 1 | $582K |
| 13 | 81521 | Fruita | 53 | D | 0 | $385K |
| 14 | 81527 | Whitewater | 53 | D | 0 | $431K |
| 15 | 81523 | Glade Park | 40 | D | 0 | $786K |
| 16 | 81524 | Loma | 40 | D | 0 | $719K |
| 17 | 81525 | Mack | 40 | D | 0 | $442K |
| 18 | 81630 | De Beque | 40 | D | 0 | $276K |
| 19 | 81646 | Molina | 40 | D | 0 | $471K |
Recommended Buyer Guides for Mesa County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Mesa County, Colorado
Overview
Mesa County in Colorado covers 19 ZIP codes with an average Home Safety Score of C (59/100).
10 of 19 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Colorado 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.