Earth City, MO: High Radon Risk — 40/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Water systems serving Earth City record elevated violation rates against MO benchmarks — residents in affected areas may want to check their local system's current compliance status.
How Earth City Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Earth City Residents
- Estimated remediation: $1,700 per household.
- CDC health risk index: 12.49 — above typical levels.
Earth City's Water Providers
A single dominant system supplies most of Earth City, MO. That utility controls infrastructure decisions, rate structures, and EPA compliance reporting for most residential addresses served across those 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Earth City, Missouri, covering 1 community water system serving approximately 1,111,000 people.
No EPA violations recorded across any ZIP codes in Earth City — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Earth City: D (40/100)
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
Earth City water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Earth City
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 63045 | D | MO AMERICAN ST LOUIS ST CHARLES COUNTIES | 1,111,000 |
All ZIP Codes in Earth City
- 63045 [D]
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.
Earth City Community Health Snapshot
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
What You Can Do in Earth City
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Earth City, MO