Kirwin, KS: High Radon Risk — 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Unlike higher-rated cities in KS, Kirwin carries a fair number of documented violations — the pattern of compliance gaps keeps the city in the middle tier of EPA safety rankings.
How Kirwin Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Kirwin Water
- Average lead level: 0.0017 mg/L.
- Homes built before 1986: 93% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 15.08 — above typical levels.
Who Supplies Your Water in Kirwin
A single utility carries the primary residential water load in Kirwin, KS — the dominant provider across 1 federally tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Kirwin, Kansas, covering 1 community water system serving approximately 212 people.
No EPA violations recorded across any ZIP codes in Kirwin — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Kirwin: C (66/100)
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
Kirwin water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0017 mg/L (EPA action level: 0.015 mg/L)
- 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 |
|---|---|---|---|
| 67644 | C | City of Kirwin, | 132 |
All ZIP Codes in Kirwin
- 67644 [C]
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.
Health Outcomes in Kirwin
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
Housing & Infrastructure in Kirwin
With 93% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
While newer cities carry lower aggregate plumbing risk from lead-era construction, Kirwin sits firmly in the older category. The median build year of 1902 indicates that more than half the housing stock was built before 1986, when lead solder was still legally used in residential copper plumbing — and a substantial portion likely predates 1970, when lead pipes were still commonly installed for service lines. These two thresholds together define the elevated plumbing risk environment that older housing cities carry, independent of what the municipal water supply delivers to the meter.
Over half of homes in Kirwin were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Kirwin Homeowners
In Kirwin, the equity share of documented remediation is meaningful enough to move the household financial perspective from routine maintenance into deliberate budgeting territory — the cost-to-value ratio is moderate, and most homeowners benefit from mapping the full scope against available budgets before committing.
Remediation costs are moderate relative to home values in Kirwin. The estimated $800–$1,500 range is manageable for most homeowners but still worth budgeting for. Home values are 51% below the Kansas average.
Lead Exposure Risk for Children in Kirwin
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.
Although utility-side compliance with federal Lead and Copper requirements remains the system reference, that compliance does not extend down into interior plumbing. With 93% of Kirwin stock built before the solder ban and aggregate readings at or beyond the action mark, a household-level sample becomes the practical way to close that information gap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Kirwin
- 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. With 93% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Kirwin, KS