Local radon data · Lincoln, Nebraska
Use the map for context—and a test for the house.
County averages and risk zones show why testing matters around Lincoln. They cannot tell you the radon level behind a specific front door.
Nebraska’s current county map
Lancaster County sits in the higher of two published ranges.
Nebraska DHHS compares average pre-mitigation radon measurements reported from October 1, 2018 to September 30, 2023. On that map, Lancaster County appears in the category 2.7 pCi/L or higher.
The map does not publish a precise Lincoln city average, and the category is not a result for every home. DHHS also notes that homes with elevated levels were found in every Nebraska county that had testing results.
- 01
Read the date range
The current DHHS county comparison summarizes reported measurements over a five-year period, not a live reading.
- 02
Read the population
The measurements are pre-mitigation results reported to the state program; they are not a random sample of every property.
- 03
Keep the unit straight
Radon in air is reported in picocuries per liter, abbreviated pCi/L.
EPA Zone 1
A risk zone supports testing. It does not replace testing.
EPA classifies Lancaster County as Zone 1, the category for counties with the highest potential for elevated indoor radon. EPA created the map to help governments and organizations target risk-reduction resources.
EPA says the zone map should not be used to determine if individual homes need to be tested. Homes with elevated and lower readings can sit in the same county, neighborhood, or block.
The address-level decision
A local map cannot answer the homeowner’s question.
No county average, zone, ZIP code, or nearby result can predict the radon level in a specific home. Foundation openings, soil pathways, pressure differences, weather, ventilation, and test conditions can all affect a measurement.
Use a properly placed test to establish the property’s own result. EPA recommends fixing at 4 pCi/L or higher and considering action between 2 and 4 pCi/L.
Turn context into a decision
- Choose a test that fits the decision and timing.
- Follow the device or professional placement protocol.
- Keep the result, dates, location, and test conditions.
- Compare an elevated result with the appropriate confirmation or mitigation path.
Compare Lincoln home-testing options or review what happens after an elevated result.
Official sources
Check the map, its limits, and the action guidance.
- Nebraska DHHS: Radon Data
- EPA: Map of Radon Zones and map limitations
- EPA: Radon action level
- Lincoln-Lancaster County Health Department: indoor-air guidance
Source review: July 20, 2026. This page is general data interpretation, not a property test, risk diagnosis, or represented contractor service.
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