Radon Mitigation in Fawn Grove, PA
Updated
PA DEP has 460 home radon tests on record from the ZIP code that cover Fawn Grove (17321). 64.8% came back at or above the EPA's 4.0 pCi/L action level, against 52.5% for York County as a whole. That puts Fawn Grove clearly above the county as a whole. A standard system here typically costs $800 to $1,500. The only way to know about one house is to test it.
Fawn Grove is a borough in York County with about 460 residents and 184 homes, median year built 1961. It is surrounded on three sides by Fawn Township. The borough was incorporated in 1881. 64.8% of PA DEP radon tests in its ZIP codes came back at or above the action level, above the county's 52.5%.
What the PA DEP test records show for Fawn Grove
ZIP 17321 covers essentially all of Fawn Grove, so these numbers are about as local as public radon data gets.
| ZIP | Tests | Median pCi/L | 4+ pCi/L | 10+ | 20+ |
|---|---|---|---|---|---|
| 17321 | 460 | 6.8 | 64.8% | 39.8% | 20.4% |
| York County | 98,845 | 4.3 | 52.5% | 26.8% | 13.1% |
Half of the story is the median. The other half is the tail: 39.8% of tests here were 10 pCi/L or higher and 20.4% were 20 or higher. The top reading on record in these ZIP codes is 196 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 17321, basement tests have a median of 7.1 pCi/L, while tests taken on the first floor have a median of 5.1 pCi/L (39 first-floor tests). The gap is smaller than in most of the county, which means readings upstairs here are not much of a relief from the basement number.
It also explains why two neighbors can get very different results. One tested a finished basement, the other tested a first-floor bedroom. For a decision about mitigation, the test that counts is the one from the lowest level anyone spends time in.
Housing in Fawn Grove and what it means for a system
Census Bureau, American Community Survey 2020 to 2024:
| Fawn Grove | York County | |
|---|---|---|
| Homes (housing units) | 184 | 189,857 |
| Median year built | 1961 | 1976 |
| Built before 1940 | 41.3% | 18.3% |
| Built before 1980 | 64.1% | 54.8% |
| Built 2000 or later | 13% | 20.6% |
| Single-family detached | 83.2% | 64.3% |
| Attached (rowhome, townhouse) | 10.9% | 17.1% |
| Mobile homes | 0.5% | 4.1% |
| Owner-occupied | 83.8% | 76.3% |
41.3% of the homes in Fawn Grove were built before 1940, against 18.3% county-wide. Houses that old usually sit on stone or early block foundations with no vapor barrier and plenty of joints, which gives soil gas more ways in. They are still very fixable. The installer just spends more time sealing, and sometimes needs a second suction point, which is why these jobs tend to land toward the upper end of the cost range.
83.2% of homes in Fawn Grove 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, expect older houses in Fawn Grove to land in the $1,200 to $2,500 part of the range once sealing and a possible second suction point are counted. Newer houses are usually the standard $800 to $1,500 job. Full ranges on the cost page.
Where we work in Fawn Grove
Public schools here are part of South Eastern School District. The borough was incorporated in 1881.
Installers must hold a PA DEP radon mitigation certification (how to check), and permit questions go to the borough office at fawngroveborough.org.
Common questions
Is radon a problem in Fawn Grove?
Yes. PA DEP has 460 tests on record from the ZIP code covering Fawn Grove, and 64.8% of them came back at or above the EPA's 4.0 pCi/L action level. 20.4% were at 20 pCi/L or more. The county-wide rate is 52.5%.
What is the average radon level in ZIP 17321?
The median of 460 PA DEP tests in ZIP 17321 is 6.8 pCi/L and the mean is 14.4 pCi/L. A mean that far above the median means a long tail of very high readings, topping out at 196 pCi/L.
Nearby
Fawn Township 65.2%. Share of PA DEP tests at or above 4.0 pCi/L, against 64.8% here.
Have a test result from Fawn Grove?
Send us the number and the foundation type, or call and read it out.
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