Bonneville County, Idaho
13 ZIP codes · Avg score 71/100 · Grade B · Updated 2026-06-04
Unlike many counties its size, Bonneville County keeps violation rates low — all 13 ZIP codes score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Bonneville County Compares
How Bonneville County Compares
Bonneville County scores 5 points above the Idaho state average (66/100) and 3 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Bonneville County, Idaho
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.4 (asthma 10.6%, diabetes 9.4%)
Estimated additional annual cost per homeowner: $809, driven primarily by wildfire
Infrastructure: 0.351% avg pipe failure probability, 15% of ZIPs at high risk
55.8% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across Bonneville County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 8 violations. Past 5 years: 13 total (13 health-based). Health-based violations are declining versus the prior 2-year window.
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: $809
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
46,439 housing units in Bonneville 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 Bonneville County
Remediation costs are relatively manageable for most homeowners in Bonneville 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 Bonneville 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 Bonneville County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Falls Water Company Inc. | 22,650 | 84 |
| 2 | City of Idaho Falls | 69,450 | 77 |
| 3 | Comore Loma | 1,500 | 77 |
| 4 | Taylor Mountain Water and Sewer District | 600 | 77 |
| 5 | Morning View Water Company | 459 | 77 |
14 total water systems serve Bonneville County.
All ZIP Codes in Bonneville County
13 ZIP codes tracked in Bonneville County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 83454 | Ucon | 82 | B | 5 (1 health) | $307K |
| 2 | 83449 | Swan Valley | 75 | B | 7 | $551K |
| 3 | 83443 | Ririe | 74 | B | 1 | $154K |
| 4 | 83401 | Idaho Falls | 73 | B | 11 (4 health) | $308K |
| 5 | 83402 | Idaho Falls | 73 | B | 11 (4 health) | $301K |
| 6 | 83404 | Idaho Falls | 73 | B | 11 (4 health) | $355K |
| 7 | 83406 | Idaho Falls | 73 | B | 11 (4 health) | $351K |
| 8 | 83427 | Iona | 72 | B | 7 (3 health) | $368K |
| 9 | 83403 | Idaho Falls | 71 | B | 11 (4 health) | — |
| 10 | 83405 | Idaho Falls | 71 | B | 11 (4 health) | — |
| 11 | 83415 | Idaho Falls | 71 | B | 11 (4 health) | — |
| 12 | 83434 | Menan | 63 | C | 0 | $240K |
| 13 | 83428 | Irwin | 53 | D | 0 | $540K |
Recommended Buyer Guides for Bonneville County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Lead Paint Test Kits — 55.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Bonneville County, Idaho
Overview
Bonneville County in Idaho covers 13 ZIP codes with an average Home Safety Score of B (71/100).
11 of 13 ZIP codes have recorded EPA violations. 32 health-based violations have been documented.
← 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.