Shoshone County, Idaho
13 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-03
Shoshone County shows moderate water quality across its 13 ZIP codes — some areas carry violations worth monitoring.
How Shoshone County Compares
How Shoshone County Compares
Shoshone County scores 6 points below the Idaho state average (66/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Shoshone County, Idaho
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.6 (asthma 11.3%, diabetes 13.5%)
Estimated additional annual cost per homeowner: $1,494, driven primarily by energy_code_gap
Infrastructure: 0.431% avg pipe failure probability, 69% of ZIPs at high risk
81.2% 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: $1,494
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
7,649 housing units in Shoshone 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 Shoshone County
Remediation costs are relatively manageable for most homeowners in Shoshone 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 Shoshone 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 Shoshone County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Murray Water Assn Inc. | 35 | 7 |
| 2 | Avery Water and Sewer District | 114 | 1 |
| 3 | Rose Lake Water Assn | 300 | 1 |
| 4 | Central Shoshone County Water District | 6,098 | 1 |
| 5 | Sunny Acres | 100 | 1 |
14 total water systems serve Shoshone County.
All ZIP Codes in Shoshone County
13 ZIP codes tracked in Shoshone County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 83808 | Calder | 70 | B | 0 | — |
| 2 | 83850 | Pinehurst | 70 | B | 0 | $262K |
| 3 | 83802 | Avery | 66 | C | 1 | — |
| 4 | 83812 | Clarkia | 66 | C | 0 | $138K |
| 5 | 83873 | Wallace | 65 | C | 0 | $250K |
| 6 | 83810 | Cataldo | 63 | C | 1 | $517K |
| 7 | 83837 | Kellogg | 63 | C | 1 | $215K |
| 8 | 83839 | Kingston | 63 | C | 1 | $336K |
| 9 | 83874 | Murray | 59 | C | 7 | — |
| 10 | 83846 | Mullan | 53 | D | 0 | $171K |
| 11 | 83849 | Osburn | 53 | D | 0 | $192K |
| 12 | 83867 | Silverton | 53 | D | 0 | $282K |
| 13 | 83868 | Smelterville | 40 | D | 0 | $115K |
Recommended Buyer Guides for Shoshone County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 81.2% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Shoshone County, Idaho
Overview
Shoshone County in Idaho covers 13 ZIP codes with an average Home Safety Score of C (60/100).
5 of 13 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Idaho 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.