Billings County, North Dakota
2 ZIP codes · Avg score 51/100 · Grade D · Updated 2026-06-04
For households across Billings County's 2 ZIP codes, below-average water safety data and recurring health violations make local monitoring worthwhile — checking the specific system serving an address is the most actionable starting point.
How Billings County Compares
How Billings County Compares
Billings County scores 5 points below the North Dakota state average (56/100) and 17 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 13.7 (asthma 9.4%, diabetes 12.1%)
Estimated additional annual cost per homeowner: $765, driven primarily by wildfire
Infrastructure: 0.32% avg pipe failure probability
48% 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: $765
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
287 housing units in Billings 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 Billings County
Remediation costs are relatively manageable for most homeowners in Billings 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 Billings County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
All ZIP Codes in Billings County
2 ZIP codes tracked in Billings County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 58645 | Medora | 61 | C | 2 | $347K |
| 2 | 58627 | Fairfield | 40 | D | 0 | $285K |
Recommended Buyer Guides for Billings County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- 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
Overview
Billings County in North Dakota covers 2 ZIP codes with an average Home Safety Score of D (51/100).
1 of 2 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.
What You Can Do
Billings County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
48% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.