Jessamine County, KY radon potential

EPA's own radon map rates Jessamine County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Rank it against the rest of the country and Jessamine County lands in the 91st percentile for radon potential.

How Jessamine County compares

Jessamine County, Kentucky is home to about 56,495 people across 172.113 square miles. Averaged across its land area, Jessamine County runs about 328 people per square mile. Within its own EPA zone, Jessamine County is bigger by population than 73% of the counties that share it. Jessamine County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Jessamine County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. Being in Zone 1 raises the odds Jessamine County homes test above the action level, but it does not mean any specific house does — EPA recommends every home be tested, in every zone, because the only way to know is to test.

If Jessamine County tests above the action level

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Kentucky's state radon program

For Jessamine County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Jessamine County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Jessamine County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Jessamine County's numbers. Whatever zone Jessamine County carries, the zone explainer covers what it does and doesn't tell you about any one house.