Find Radon Testers in Delaware
Certified radon testing and mitigation professionals across Delaware. Browse 8+ listed providers below.
Radon Risk Level
EPA data for this state
Average indoor level2.7 pCi/L
0EPA action level: 4 pCi/L10+
Moderate radon potential statewide.
12% of homesin this state test above the EPA action level (4 pCi/L).
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Radon Providers in Delaware(showing top 8)
Radon Testing in Delaware — FAQ
How often should I test for radon in Delaware?
The EPA recommends testing every two years in Delaware. Always test when moving into a new home, after renovations that affect lower levels, and after installing a mitigation system.
What is the EPA action level for radon?
The EPA recommends taking action to reduce radon if indoor levels reach 4 pCi/L or higher. Even levels between 2–4 pCi/L present risk, and mitigation is recommended where feasible.
Do I need a certified radon tester in Delaware?
For real estate transactions, most states require a certified tester. Look for NRPP or AARST-NRPP certification. Delaware may also have its own state program — check your state radon office for specific requirements.