Roosevelt County, Montana
5 ZIP codes · Avg score 58/100 · Grade C · Updated 2026-06-04
Roosevelt County's water quality grade reflects a middle-ground assessment — its 5 ZIP codes range from fully compliant to violation-flagged.
How Roosevelt County Compares
How Roosevelt County Compares
Roosevelt County scores 3 points above the Montana state average (55/100) and 10 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Roosevelt County, Montana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.5 (asthma 14.2%, diabetes 14.1%)
Estimated additional annual cost per homeowner: $814, driven primarily by wildfire
Infrastructure: 0.362% avg pipe failure probability
66.4% 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: $814
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,284 housing units in Roosevelt 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 Roosevelt County
Remediation costs are relatively manageable for most homeowners in Roosevelt 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 Roosevelt County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Roosevelt County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Bainville Town of | 350 | 3 |
| 2 | DRY PRAIRIE RURAL WATER AUTHORITY | 3,005 | 2 |
| 3 | Culbertson Town of | 714 | 2 |
| 4 | Froid Town of | 450 | 0 |
All ZIP Codes in Roosevelt County
5 ZIP codes tracked in Roosevelt County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59218 | Culbertson | 68 | C | 2 | $257K |
| 2 | 59226 | Froid | 66 | C | 0 | $178K |
| 3 | 59212 | Bainville | 65 | C | 3 | $394K |
| 4 | 59255 | Poplar | 53 | D | 0 | $80K |
| 5 | 59213 | Brockton | 40 | D | 0 | $74K |
Recommended Buyer Guides for Roosevelt County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 66.4% of homes built before 1978
- 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 Roosevelt County, Montana
Overview
Roosevelt County in Montana covers 5 ZIP codes with an average Home Safety Score of C (58/100).
2 of 5 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Montana 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.