Teton County, Montana
7 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-04
In recent monitoring cycles, Teton County's 7 ZIP codes show a split record — several have documented water safety violations.
How Teton County Compares
How Teton County Compares
Teton County scores 5 points above the Montana state average (55/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Teton County, Montana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.6 (asthma 11.3%, diabetes 11.4%)
Estimated additional annual cost per homeowner: $944, driven primarily by energy_code_gap
Infrastructure: 0.48% avg pipe failure probability, 100% of ZIPs at high risk
85% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Teton County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 1 violation. Past 5 years: 2 total (2 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $944
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,998 housing units in Teton 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 Teton County
Remediation costs are relatively manageable for most homeowners in Teton 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 Teton 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 Teton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Dutton Town of | 338 | 7 |
| 2 | Tri County Water District | 470 | 7 |
| 3 | Bynum - Teton Company W & S District | 100 | 6 |
| 4 | Homestead Acres County Water and Sewer | 500 | 4 |
| 5 | Power Teton County Water District | 205 | 4 |
11 total water systems serve Teton County.
All ZIP Codes in Teton County
7 ZIP codes tracked in Teton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 59422 | Choteau | 69 | C | 3 | $224K |
| 2 | 59433 | Dutton | 65 | C | 7 (1 health) | $141K |
| 3 | 59436 | Fairfield | 65 | C | 3 | $272K |
| 4 | 59468 | Power | 64 | C | 4 | $236K |
| 5 | 59419 | Bynum | 62 | C | 6 | — |
| 6 | 59467 | Pendroy | 55 | C | 0 | — |
| 7 | 59432 | Dupuyer | 40 | D | 0 | $234K |
Recommended Buyer Guides for Teton County
Editorial-only picks, screened against the EPA detections on file.
- Best Lead Paint Test Kits — 85% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Teton County, Montana
Overview
Teton County in Montana covers 7 ZIP codes with an average Home Safety Score of C (60/100).
5 of 7 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← 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.