Broadwater County, Montana
4 ZIP codes · Avg score 51/100 · Grade D · Updated 2026-06-03
Spanning 4 ZIP codes, Broadwater County carries a low water safety grade — health-based violations appear in a significant share of areas.
How Broadwater County Compares
How Broadwater County Compares
Broadwater County scores 4 points below the Montana state average (55/100) and 17 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 12.9 (asthma 10.9%, diabetes 10.4%)
Estimated additional annual cost per homeowner: $375, driven primarily by wildfire
Infrastructure: 0.293% avg pipe failure probability
40.3% 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: $375
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,632 housing units in Broadwater 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 Broadwater County
Remediation costs are relatively manageable for most homeowners in Broadwater 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 Broadwater 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 Broadwater County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | TOWNSEND CITY OF | 2,000 | 2 |
| 2 | Ramshorn View Estates | 185 | 2 |
| 3 | Mountain View Mb Hm Pk | 150 | 2 |
| 4 | Gallatin River Apartments | 40 | 2 |
All ZIP Codes in Broadwater County
4 ZIP codes tracked in Broadwater County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59644 | Townsend | 69 | C | 2 | $308K |
| 2 | 59643 | Toston | 53 | D | 0 | $322K |
| 3 | 59641 | Radersburg | 40 | D | 0 | — |
| 4 | 59647 | Winston | 40 | D | 0 | $311K |
Recommended Buyer Guides for Broadwater 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
Overview
Broadwater County in Montana covers 4 ZIP codes with an average Home Safety Score of D (51/100).
1 of 4 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.
What You Can Do
Broadwater 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
40.3% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.