Radon mitigation in Hanover, PA

What radon measures in Hanover

The typical Hanover result is 3.60 pCi/L, which is the median across 11,820 recorded tests and sits under the 4 pCi/L action level. The average is 10.05, and both numbers are correct: radon readings bunch up low with a long tail of extreme results, and Hanover's tail includes a reading of 1,259.7. The average describes the tail, the median describes your neighbors.

The number that decides anything is the share crossing the line. Here it is 47.0 percent, so a Hanover house is a little under even money to need work.

The county as a whole runs at 52.5 percent with a median of 4.30, so Hanover sits meaningfully below it on both. On a sample of 11,820 that gap is real rather than noise. It is also not much comfort: a shade under half is still close to a coin flip, and the only number that settles your own house is the one from your own basement.

The sample behind that average is unusually large. Only the city of York has more recorded tests, which means the Hanover figure is among the most solid town level numbers in the county rather than an average over a few dozen readings.

Hanover against the ground around it

The borough reads noticeably lower than the countryside on its doorstep, which is the opposite of what most people expect from a town surrounded by farmland.

Glenville is a short drive south of Hanover and averages more than double. Spring Grove, east along Route 116, runs at 17.48. Between them sits Hanover at 10.05, and the difference is geology rather than anything about the buildings.

The practical consequence is that a neighbor's result from outside the borough tells you very little. If the house you are comparing against sits toward Glenville or Spring Grove, its reading belongs to different rock.

What mitigation costs in Hanover

Across 133 systems installed in Hanover between 2024 and 2026, the median came to $1,150 and the average to $1,175. That is effectively the same as the county median, so a Hanover quote can be read directly against the county wide distribution.

Nearly all of that work was standard sub-slab ventilation, the same approach used in four out of five York County installations. If a contractor proposes something unusual for an ordinary Hanover basement, it is reasonable to ask which part of the house makes it the exception.

The full breakdown, including what moves a price up or down and why your reading barely affects it, sits on the page about what radon mitigation costs in York County.

Hanover housing and what it means

Hanover's building stock runs from nineteenth century borough housing through post war development into recent construction on the edges, and that range matters less for radon than people assume. Downtown York, the oldest and densest part of the county, has its lowest readings, so age is a poor predictor.

What does predict the job is whether a pipe is already in the ground. Newer Hanover construction may have been built with a passive radon pipe running from under the slab to the roof, and activating one costs roughly 40 percent less than building a system from nothing. Check the basement ceiling and the outside wall before you ask for quotes.

Common questions about radon in Hanover