Mascoutah, IL: 2 Violations — 79/100 (2026)
2 ZIP codes · 8 water systems · Updated 2026-06-03
Tap water in Mascoutah, IL scores well — low violation counts, above-average safety grade.
How Mascoutah Compares
Data: EPA SDWIS Last verified: 2026-06-03
Mascoutah Water: The Quick Version
- Your city's water systems recorded 2 violations in the past 5 years.
- Average lead level: 0.0046 mg/L.
- Estimated remediation: $1,300 per household.
- CDC health risk index: 13.66 — above typical levels.
Water Systems Serving Mascoutah
Water supply in Mascoutah, IL follows a divided structure: 3 utilities account for the largest share of residential service out of 8 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
Overview
We track water quality and home safety data for 2 ZIP codes in Mascoutah, Illinois (population ~10,292), covering 8 community water systems serving approximately 202,463 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Mascoutah: B (79/100)
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
Mascoutah water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0046 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 |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 3 | 2 |
Areas with Most Violations
All ZIP Codes in Mascoutah
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 Mascoutah
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 Mascoutah
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Mascoutah: Remediation Cost in Perspective
Within the Mascoutah market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Mascoutah are relatively low compared to home values. The $600–$2,100 estimated range is a small fraction of median property value. Home values are 25% above the Illinois average.
Protecting Children from Lead in Mascoutah
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 Mascoutah 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 Mascoutah
Although Mascoutah's flood history doesn't reach high-severity thresholds, NFIP data documents 15 claims and FEMA maps place 50% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Mascoutah has a moderate flood history with 15 FEMA claims averaging $5,664 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>$1,300</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 Mascoutah, IL