Shawnee Mission, KS: High Radon Risk — 40/100 (2026)
2 ZIP codes · 1 water system · Updated 2026-06-03
For households across Shawnee Mission, below-average water safety data and recurring compliance violations documented by KS EPA records make it worthwhile to verify the specific system serving your address — system-level detail is the most actionable reference point available.
How Shawnee Mission Compares
Data: EPA SDWIS Last verified: 2026-06-03
Shawnee Mission Water: The Quick Version
- Estimated remediation: $1,200 per household.
- CDC health risk index: 10.83.
Water Systems Serving Shawnee Mission
Federal records track 1 water system in Shawnee Mission, KS, and a single provider handles the dominant share of residential connections while carrying primary responsibility for EPA compliance.
Overview
We track water quality and home safety data for 2 ZIP codes in Shawnee Mission, Kansas, covering 1 community water system serving approximately 143,014 people.
No EPA violations recorded across any ZIP codes in Shawnee Mission — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Shawnee Mission: 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
Shawnee Mission water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Shawnee Mission
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 2 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 66250 | D | OLATHE, CITY OF | 143,014 |
| 66276 | D | OLATHE, CITY OF | 143,014 |
All ZIP Codes in Shawnee Mission
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 Shawnee Mission
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 Shawnee Mission
- 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 Shawnee Mission, KS