Bonner County, Idaho
16 ZIP codes · Avg score 65/100 · Grade C · Updated
ZipCheckup grade for Bonner County: C.
A mixed picture - some signals here are worth your attention.
Water safety in Bonner County is uneven - some of its 16 ZIP codes meet standards cleanly while others carry documented violations.
How Bonner County Compares
How Bonner County Compares
Bonner County scores 7 points below the Idaho state average (72/100) and 8 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Bonner County, Idaho
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.5 (asthma 10.7%, diabetes 11.8%)
Estimated additional annual cost per homeowner: $916, driven primarily by flood
42.4% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Bonner County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 9 violations. Past 5 years: 20 total (20 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
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $916
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
25,229 housing units in Bonner 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 Bonner County
Remediation costs are relatively manageable for most homeowners in Bonner 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 Bonner County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Bonner County
8 community water systems serving Bonner County.
- C
- C
- C
Show all 8 water systems
- C
9 total water systems serve Bonner County.
Systems with the most violations in Bonner County
5 water systems with recorded EPA violations.
- C
- C
- C
- C
All ZIP Codes in Bonner County
16 ZIP codes tracked in Bonner County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 83840 | Kootenai | 66 | C | 1 (1 health) | $287K |
| 2 | 83852 | Ponderay | 66 | C | 1 (1 health) | $381K |
| 3 | 83864 | Sandpoint | 63 | C | 11 (2 health) | $474K |
| 4 | 83804 | Blanchard | — | — | 1 | $282K |
| 5 | 83809 | Careywood | — | — | — | |
| 6 | 83811 | Clark Fork | — | — | $235K | |
| 7 | 83813 | Cocolalla | — | — | $560K | |
| 8 | 83821 | Coolin | — | — | $574K | |
| 9 | 83822 | Oldtown | — | — | 2 | $374K |
| 10 | 83825 | Dover | — | — | 3 (2 health) | $594K |
| 11 | 83836 | Hope | — | — | 6 | $534K |
| 12 | 83841 | Laclede | — | — | 3 (1 health) | $337K |
| 13 | 83848 | Nordman | — | — | $812K | |
| 14 | 83856 | Priest River | — | — | 2 | $374K |
| 15 | 83860 | Sagle | — | — | 0 | $508K |
| 16 | 83865 | Colburn | — | — | — |
Recommended Buyer Guides for Bonner 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 Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Bonner County, Idaho
Overview
Bonner County in Idaho covers 16 tracked ZIP records with an average Home Safety Score of C (65/100) across 3 scored records.
9 of 10 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 2 health-based violations appear in the available health breakdown.
← Back to Idaho Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.