Rexburg, ID: 3 Health Violations — 82/100 (2026)
3 ZIP codes · 6 water systems · Updated 2026-06-03
How does Rexburg tap water hold up under EPA scrutiny? Above average for ID — documented violations are uncommon and the safety grade reflects a clean overall record.
How Rexburg Compares
Data: EPA SDWIS Last verified: 2026-06-03
Rexburg Water: The Quick Version
- Your city's water systems recorded 39 violations in the past 5 years.
- Average lead level: 0.002 mg/L.
- Estimated remediation: $1,900 per household.
- CDC health risk index: 8.31.
Water Systems Serving Rexburg
In Rexburg, ID, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 6 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 3 ZIP codes in Rexburg, Idaho, covering 6 community water systems serving approximately 50,704 people.
3 of 3 ZIP codes (100%) have recorded EPA violations. 3 health-based violations documented.
Home Safety Score
Average Home Safety Score for Rexburg: B (82/100)
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
Rexburg water systems draw from: Groundwater.
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): 0 ZIP codes
- Zone 2 (Moderate): 3 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 |
|---|---|---|---|
| Total Coliform | Microbiological | 16 | 3 |
| Consumer Confidence Report Rule | Reporting | 16 | 3 |
| Lead | Inorganic | 4 | 3 |
| Combined Radium | Radionuclides | 4 | 3 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 83440 | B | 13 | 1 | City of Rexburg |
| 83441 | B | 13 | 1 | City of Rexburg |
| 83460 | B | 13 | 1 | City of Rexburg |
All ZIP Codes in Rexburg
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 Rexburg
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 Rexburg
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Rexburg: Remediation Cost in Perspective
Placing remediation in the context of Rexburg's property market, the equity share is low — most homeowners here are weighing a financial commitment that fits comfortably within routine property planning, far from the threshold where remediation becomes a material equity decision rather than a standard upkeep consideration.
Remediation costs in Rexburg are relatively low compared to home values. The $1,217–$2,700 estimated range is a small fraction of median property value. Home values are 12% above the Idaho average.
Protecting Children from Lead in Rexburg
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 Rexburg 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 Rexburg
NFIP records stretching across multiple decades show Rexburg accumulating 8 claims and carrying 33% 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.
Rexburg has a moderate flood history with 8 FEMA claims averaging $2,063 per payout. 33% 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>$1,900</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 Rexburg, ID