Township, York County

Radon Mitigation in Paradise Township, PA

Updated September 30, 2026

Paradise Township is a township in York County with about 4,019 residents and 1,525 homes, median year built 1982. Swigart's Mill, built in 1794, is on the National Register of Historic Places. 49.2% of PA DEP radon tests in its ZIP codes came back at or above the action level, below the county's 52.5%.

What the PA DEP test records show for Paradise Township

ZIP codes don't follow township lines, so the 3 ZIP codes below also take in some homes just outside Paradise Township.

• ZIP 17364 (about 40% of Paradise Township's land): median 4.1 pCi/L across 436 tests, 8% at 20 or higher, top reading 122. Basement median 4.7, first floor 2.
• ZIP 17301 (about 23% of Paradise Township's land): median 3.4 pCi/L across 109 tests, 3.7% at 20 or higher, top reading 30. Basement median 3.4.
• ZIP 17316 (about 18% of Paradise Township's land): median 3.2 pCi/L across 144 tests, 3.5% at 20 or higher, top reading 22. Basement median 3.6.

The spread inside Paradise Township runs from 44.4% of tests high in 17316 to 51.8% in 17364.

Look past the median to the high end. One test in 16 here came in at 20 pCi/L or more, five times the action level, and the highest reading on record is 122 pCi/L. Neighboring houses can differ by a factor of ten, so none of this tells you what your house is. It tells you the odds are high enough that a $15 to $30 test kit is worth buying.

Tests people chose to run, not a random survey. Details on the York County radon levels page.

Basement readings versus first-floor readings

In ZIP 17364, basement tests have a median of 4.7 pCi/L, while tests taken on the first floor have a median of 2 pCi/L (60 first-floor tests). The basement number runs 2.4 times the first-floor number, which is the usual pattern: radon comes up from the soil, so it is strongest at the lowest level and gets diluted as it moves up through the house.

Housing in Paradise Township and what it means for a system

Census Bureau, American Community Survey 2020 to 2024:

10% of homes in Paradise Township are mobile or manufactured homes, well above the county's 4.1%. Those sit over a crawlspace or skirted pad rather than a basement, and the fix is different: a sealed membrane over the soil with suction under it. See crawlspace radon for what that involves.

85.7% of homes in Paradise Township are single-family detached. A detached house with a basement is the easiest layout to mitigate: one suction point through the slab, a fan outside or in the garage, and a vent above the roof line. It is the standard sub-slab depressurization job covered step by step on our mitigation process page, and it usually lands in the middle of the cost range.

Cost-wise, a basement house here is the standard $800 to $1,500 job, while a mobile home or crawlspace house usually runs $1,500 to $3,000 because of the membrane work. Full ranges on the cost page.

Where we work in Paradise Township

Swigart's Mill, built in 1794, is on the National Register of Historic Places.

Installers must hold a PA DEP radon mitigation certification (how to check), and permit questions go to the township office at www.paradisetwpyorkco.com.

Common questions

Is radon a problem in Paradise Township?

Yes. PA DEP has 689 tests on record from the ZIP codes covering Paradise Township, and 49.2% of them came back at or above the EPA's 4.0 pCi/L action level. 6.4% were at 20 pCi/L or more. The county-wide rate is 52.5%.

What is the average radon level in ZIP 17364?

The median of 436 PA DEP tests in ZIP 17364 is 4.1 pCi/L and the mean is 8 pCi/L. The top reading on record there is 122 pCi/L.

Nearby

Dover Borough 44.2%, Spring Grove 58.6%, Jefferson 58.6%, Dover Township 44.2%, Jackson Township 53.7%. Share of PA DEP tests at or above 4.0 pCi/L, against 49.2% here.