Radon Mitigation by Town in York County, PA
Every one of the 18 York County towns on this site has a basement radon average above 4 pCi/L, the level where EPA says to fix your home. Averages range from 7.0 pCi/L in Manchester to 23.0 pCi/L in Wrightsville. Pick your town to see the certified companies that serve it.
Radon Levels and Companies by York County Town
Each town page lists the PA DEP-certified companies that serve it and what DEP's tests show there.
Radon mitigation in Dallastown
16.7 pCi/L basement average15 companies serve it · 1,542 basement testsRadon mitigation in Delta
11.6 pCi/L basement average15 companies serve it · 593 basement testsRadon mitigation in Dover
7.4 pCi/L basement average15 companies serve it · 2,250 basement testsRadon mitigation in Glen Rock
17.4 pCi/L basement average15 companies serve it · 1,083 basement testsRadon mitigation in Hanover
11.0 pCi/L basement average15 companies serve it · 7,900 basement testsRadon mitigation in Hellam
15.2 pCi/L basement average15 companies serve it · 3,580 basement testsRadon mitigation in Jacobus
16.8 pCi/L basement average15 companies serve it · 415 basement testsRadon mitigation in Manchester
7.0 pCi/L basement average15 companies serve it · 664 basement testsRadon mitigation in New Freedom
9.4 pCi/L basement average15 companies serve it · 1,612 basement testsRadon mitigation in Red Lion
16.3 pCi/L basement average15 companies serve it · 2,835 basement testsRadon mitigation in Shrewsbury
9.0 pCi/L basement average15 companies serve it · 1,144 basement testsRadon mitigation in Spring Grove
21.0 pCi/L basement average15 companies serve it · 1,742 basement testsRadon mitigation in Springettsbury
12.2 pCi/L basement average15 companies serve it · 8,522 basement testsRadon mitigation in Stewartstown
15.1 pCi/L basement average15 companies serve it · 1,834 basement testsRadon mitigation in Windsor
17.9 pCi/L basement average15 companies serve it · 493 basement testsRadon mitigation in Wrightsville
23.0 pCi/L basement average15 companies serve it · 657 basement testsRadon mitigation in York
9.9 pCi/L basement average15 companies serve it · 10,382 basement testsRadon mitigation in York Township
13.2 pCi/L basement average15 companies serve it · 15,806 basement testsWhat Do Town Radon Averages Tell You?
How common high radon is in your area, not your own home's level.
Your home can be different
A town average isn't your home's level. Only a test tells you that. See how to test for radon and what your radon number means.
How town figures are worked out
From PA DEP's basement test results by ZIP code, January 1990 to December 2025. Towns covering more than one ZIP code are combined, weighted by the number of tests, so some ZIP codes count toward more than one town.
Keep Reading About Radon in York County
Sources
- PA DEP radon test results by ZIP code
- US Census Bureau: 2020 ZCTA to county subdivision relationship file
- US EPA: Map of Radon Zones and action levels
- PA DEP: Pennsylvania Home Buyer's and Seller's Guide to Radon
Page last updated Oct 2026.