Radon Testing & Mitigation guide • Quincy, MA
Your Radon Number, Explained: What pCi/L Means for Your Home
A radon test hands you a number in pCi/L and no instructions. Here is what that number actually means, in plain bands.
Radon Testing & Mitigation guide • Quincy, MA
A radon test hands you a number in pCi/L and no instructions. Here is what that number actually means, in plain bands.
Radon is a naturally occurring radioactive gas that seeps into homes from the soil. The EPA set its action level at 4 pCi/L. Everything below is context for that line.
This is the range the EPA considers low. No action needed beyond retesting every couple of years, since levels shift with seasons and house changes.
Below the action level, but not low. The EPA suggests homeowners in this range consider mitigation, especially if anyone spends long hours in the lowest level. Retest to confirm before deciding.
This is the EPA action level: fix the home. Mitigation systems reliably bring even high readings down, so a high number is a project, not a crisis.
Readings in the teens or twenties look scary but respond to the same mitigation approach. The system gets sized to the number; the physics does not change.
Radon levels move with weather, seasons, and how the house is ventilated. A single short-term test is a starting point. Confirm borderline results with a second test before spending money.
If you have a test result at or above 4 pCi/L, the next step is a mitigation plan, not worry. Call (857) 754-3949 and tell us the number; we will explain what system your house needs.
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