Morton County, North Dakota
6 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-03
Monitoring figures for Morton County indicate average water quality overall — some ZIP codes among the 6 tracked have recorded health-based violations, while others operate cleanly, making individual ZIP-level data the most actionable reference point.
How Morton County Compares
How Morton County Compares
Morton County scores 5 points above the North Dakota state average (56/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Morton County, North Dakota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.4 (asthma 10.2%, diabetes 9.6%)
Estimated additional annual cost per homeowner: $1,269, driven primarily by flood
Infrastructure: 0.438% avg pipe failure probability, 83% of ZIPs at high risk
78.5% 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: $1,269
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
15,571 housing units in Morton 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 Morton County
Remediation costs are relatively manageable for most homeowners in Morton 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 Morton 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 Morton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Missouri West Water System | 4,303 | 12 |
| 2 | City of Almont | 122 | 10 |
| 3 | City of Mandan | 21,769 | 1 |
| 4 | Crown Butte Coop | 320 | 1 |
| 5 | Riverview Heights | 200 | 1 |
10 total water systems serve Morton County.
All ZIP Codes in Morton County
6 ZIP codes tracked in Morton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 58535 | Flasher | 70 | B | 0 | $119K |
| 2 | 58563 | New Salem | 70 | B | 0 | $193K |
| 3 | 58631 | Glen Ullin | 62 | C | 0 | $123K |
| 4 | 58638 | Hebron | 62 | C | 1 | $112K |
| 5 | 58554 | Mandan | 60 | C | 1 | $267K |
| 6 | 58520 | Almont | 44 | D | 10 | $106K |
Recommended Buyer Guides for Morton County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 78.5% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Morton County, North Dakota
Overview
Morton County in North Dakota covers 6 ZIP codes with an average Home Safety Score of C (61/100).
3 of 6 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to North Dakota 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.