Boise, ID: 96 Health Violations — 71/100 (2026)
32 ZIP codes · 8 water systems · Updated 2026-06-03
Water utilities in Boise have maintained a consistent compliance record over recent monitoring periods — the city's above-average grade in ID reflects low violation rates and no systemic health concerns flagged in current data.
How Boise Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Boise, ID
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Boise.
Boise Water: The Quick Version
- Your city's water systems recorded 544 violations in the past 5 years.
- Average lead level: 0.002 mg/L.
- Estimated remediation: $1,981 per household.
- CDC health risk index: 10.96.
Water Systems Serving Boise
Across Boise, ID, residential water comes from 3 primary utilities rather than a single consolidated provider. Each system operates independently — managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 8 water systems in the area, with these top providers accounting for the majority of residential connections.
Overview
We track water quality and home safety data for 32 ZIP codes in Boise, Idaho (population ~265,704), covering 8 community water systems serving approximately 441,256 people region-wide.
32 of 32 ZIP codes (100%) have recorded EPA violations. 96 health-based violations documented.
Home Safety Score
Average Home Safety Score for Boise: B (71/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Boise water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 1 ZIP code
- Zone 2 (Moderate): 31 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Combined Radium | Radionuclides | 165 | 32 |
| Stage 1 DBP Rule | Treatment Technique | 66 | 32 |
| Stage 2 DBP Rule | Treatment Technique | 66 | 32 |
| Lead and Copper Rule | Treatment Technique | 66 | 32 |
| Consumer Confidence Report Rule | Reporting | 66 | 32 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 83701 | B | 17 | 3 | Veolia Water Idaho |
| 83702 | C | 17 | 3 | Veolia Water Idaho |
| 83703 | B | 17 | 3 | Veolia Water Idaho |
| 83704 | B | 17 | 3 | Veolia Water Idaho |
| 83705 | B | 17 | 3 | Veolia Water Idaho |
| 83706 | C | 17 | 3 | Veolia Water Idaho |
| 83707 | B | 17 | 3 | Veolia Water Idaho |
| 83708 | B | 17 | 3 | Veolia Water Idaho |
| 83709 | B | 17 | 3 | Veolia Water Idaho |
| 83711 | B | 17 | 3 | Veolia Water Idaho |
All ZIP Codes in Boise
- 83701 [B] — 17 violations ⚠
- 83702 [C] — 17 violations ⚠
- 83703 [B] — 17 violations ⚠
- 83704 [B] — 17 violations ⚠
- 83705 [B] — 17 violations ⚠
- 83706 [C] — 17 violations ⚠
- 83707 [B] — 17 violations ⚠
- 83708 [B] — 17 violations ⚠
- 83709 [B] — 17 violations ⚠
- 83711 [B] — 17 violations ⚠
- 83712 [B] — 17 violations ⚠
- 83713 [B] — 17 violations ⚠
- 83715 [B] — 17 violations ⚠
- 83716 [C] — 17 violations ⚠
- 83717 [B] — 17 violations ⚠
- 83719 [B] — 17 violations ⚠
- 83720 [B] — 17 violations ⚠
- 83721 [B] — 17 violations ⚠
- 83722 [B] — 17 violations ⚠
- 83724 [B] — 17 violations ⚠
- 83725 [B] — 17 violations ⚠
- 83726 [B] — 17 violations ⚠
- 83727 [B] — 17 violations ⚠
- 83728 [B] — 17 violations ⚠
- 83729 [B] — 17 violations ⚠
- 83730 [B] — 17 violations ⚠
- 83731 [B] — 17 violations ⚠
- 83732 [B] — 17 violations ⚠
- 83735 [B] — 17 violations ⚠
- 83756 [B] — 17 violations ⚠
- 83757 [B] — 17 violations ⚠
- 83799 [B] — 17 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Boise
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Boise
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Boise: Remediation Cost in Perspective
Given current Boise valuations, the remediation-to-property-value ratio is low — most homeowners are looking at a proportionally modest share that fits within routine financial planning.
Remediation costs in Boise are relatively low compared to home values. The $1,213–$3,284 estimated range is a small fraction of median property value. Home values are 43% above the Idaho average.
Protecting Children from Lead in Boise
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Boise appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Boise
The NFIP claim record for Boise — 72 filed incidents — reflects genuine, recurring flood exposure rather than an isolated event or two. When a community accumulates flood claims at this volume and carries 16% of its ZIP codes inside FEMA-designated zones, flood history starts to factor into water quality planning in ways it doesn't for lower-exposure areas. Flooding introduces specific contamination pathways — runoff overwhelming treatment facility intake, surface water infiltrating private wells, and pressure disruptions in distribution systems allowing backflow — all of which become more relevant as flood frequency increases.
Boise has a moderate flood history with 72 FEMA claims averaging $1,765 per payout. 16% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,981</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Boise, ID