Idaho Falls, ID: 28 Health Violations — 72/100 (2026)
7 ZIP codes · 8 water systems · Updated 2026-06-03
The water systems supplying Idaho Falls show a track record of above-average compliance with federal standards — consistently among the better performers in ID.
How Idaho Falls Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Idaho Falls, ID
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
How ZIP codes in Idaho Falls score across all safety grades.
What You Should Know About Idaho Falls Water
- Your city's water systems recorded 77 violations in the past 5 years.
- Average lead level: 0.004 mg/L.
- Estimated remediation: $1,686 per household.
- CDC health risk index: 11.42.
Who Supplies Your Water in Idaho Falls
In Idaho Falls, ID, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 8 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
Overview
We track water quality and home safety data for 7 ZIP codes in Idaho Falls, Idaho, covering 8 community water systems serving approximately 122,947 people.
7 of 7 ZIP codes (100%) have recorded EPA violations. 28 health-based violations documented.
Home Safety Score
Average Home Safety Score for Idaho Falls: B (72/100)
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
Idaho Falls water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0040 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): 0 ZIP codes
- Zone 2 (Moderate): 7 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 |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 32 | 7 |
| Total Coliform | Microbiological | 16 | 7 |
| Combined Radium | Radionuclides | 16 | 7 |
| Lead | Inorganic | 8 | 7 |
| Total Organic Carbon | Disinfection Byproducts | 8 | 7 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 83401 | B | 11 | 4 | City of Idaho Falls |
| 83402 | B | 11 | 4 | City of Idaho Falls |
| 83403 | B | 11 | 4 | City of Idaho Falls |
| 83404 | B | 11 | 4 | City of Idaho Falls |
| 83405 | B | 11 | 4 | City of Idaho Falls |
| 83406 | B | 11 | 4 | City of Idaho Falls |
| 83415 | B | 11 | 4 | City of Idaho Falls |
All ZIP Codes in Idaho Falls
- 83401 [B] — 11 violations ⚠
- 83402 [B] — 11 violations ⚠
- 83403 [B] — 11 violations ⚠
- 83404 [B] — 11 violations ⚠
- 83405 [B] — 11 violations ⚠
- 83406 [B] — 11 violations ⚠
- 83415 [B] — 11 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.
Health Outcomes in Idaho Falls
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
Top Contaminants in Idaho Falls Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Idaho Falls Homeowners
In Idaho Falls, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.
Remediation costs in Idaho Falls are relatively low compared to home values. The $757–$3,329 estimated range is a small fraction of median property value. Home values are 5% above the Idaho average.
Lead Exposure Risk for Children in Idaho Falls
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 Idaho Falls 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.
Flood & Climate Risk in Idaho Falls
NFIP records stretching across multiple decades show Idaho Falls accumulating 19 claims and carrying 57% of its ZIP codes inside FEMA flood zones — evidence of meaningful exposure that extends beyond isolated incidents. The mechanisms linking flooding to water quality haven't changed: treatment facilities can be overwhelmed, wells can be infiltrated, and distribution systems can experience backflow. For a community at this exposure level, those mechanisms shift from hypothetical to periodically relevant.
Idaho Falls has a moderate flood history with 19 FEMA claims averaging $2,274 per payout. 57% 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>$1,686</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 Idaho Falls, ID