Edwardsville, IL: 2 Health Violations — 77/100 (2026)
2 ZIP codes · 12 water systems · Updated 2026-06-03
EPA compliance records for Edwardsville tell a largely clear story: violation rates are low, health-based exceedances are uncommon, and the city's grade puts it well above average within IL.
How Edwardsville Compares
Data: EPA SDWIS Last verified: 2026-06-03
Edwardsville Water: The Quick Version
- Your city's water systems recorded 4 violations in the past 5 years.
- Average lead level: 0.0045 mg/L.
- Estimated remediation: $1,850 per household.
- CDC health risk index: 13.16 — above typical levels.
Water Systems Serving Edwardsville
With 3 utilities splitting service in Edwardsville, IL, water accountability is distributed across 12 systems on the federal record.
Overview
We track water quality and home safety data for 2 ZIP codes in Edwardsville, Illinois (population ~37,138), covering 12 community water systems serving approximately 77,805 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Edwardsville: B (77/100)
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
Edwardsville water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0045 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): 2 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 |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 3 | 2 |
| Surface Water Treatment Rule | Treatment Technique | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 62025 | B | 2 | 1 | Edwardsville |
| 62026 | B | 2 | 1 | Edwardsville |
All ZIP Codes in Edwardsville
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 Edwardsville
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 Edwardsville
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Edwardsville: Remediation Cost in Perspective
Across Edwardsville, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Edwardsville are relatively low compared to home values. The $900–$3,100 estimated range is a small fraction of median property value. Home values are 61% above the Illinois average.
Protecting Children from Lead in Edwardsville
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 Edwardsville 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 Edwardsville
64 FEMA flood insurance claims are on file for Edwardsville, and 50% of local ZIP codes fall within federally designated flood zones — enough to put flood exposure on the planning radar, though short of the concentrated-risk threshold where treatment-system vulnerability becomes a primary consideration.
Edwardsville has a moderate flood history with 64 FEMA claims averaging $7,768 per payout. 50% 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>$1,850</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 Edwardsville, IL