Winterthur, DE Radon Levels
Check local Winterthur radon levels and find certified testing and mitigation professionals to keep your home safe
Winterthur, DE Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
New Castle County, DE
Zip Code
19735
This small community in northern New Castle County is part of the greater Philadelphia Metro area, situated on Piedmont clay soils over crystalline bedrock formations. Housing consists primarily of suburban developments and estate properties, many featuring full basements common to the mid-Atlantic region's construction traditions. While specific radon testing data for zip code 19735 is limited, homeowners should pursue testing given the area's geological characteristics and regional radon potential.
Winterthur, DE Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Winterthur?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed New Castle County Pros
Radon FAQ for Winterthur, DE
What EPA Radon Zone is Winterthur in?
Winterthur and the 19735 zip code are in New Castle County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Winterthur?
Radon mitigation in Winterthur typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Winterthur?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.
Most Active Radon Markets in Delaware
Cities in Delaware with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Middletown | 7.43 pCi/L | 7 |
| Wilmington | 5.50 pCi/L | 4 |
| Lewes | 6.00 pCi/L | 1 |
| New Castle | 4.00 pCi/L | 1 |
| Newark | No submissions | 0 |