Radon Testing & Mitigation in Wilkes-Barre, PA
Moderate radon risk significantly amplified by the Wyoming Valley's anthracite coal mining legacy. Wilkes-Barre's dense urban housing stock overlies a complex network of abandoned mine workings in fractured Pennsylvanian shale, creating elevated radon migration risk throughout Luzerne County.
High Radon Risk Area
Wilkes-Barre sits in EPA Zone 1 — testing is recommended for every home regardless of age or foundation type.
Radon Testing in Wilkes-Barre
In Wilkes-Barre-area ZIP codes, 19% of 13,764 basement tests reported to PA DEP measured 4.0 pCi/L or higher, with a median of 1.9 pCi/L. Readings differ from house to house, so each home needs its own test. Start with a short-term test of 48–96 hours on the lowest lived-in level. A long-term test of 90 days or more averages out seasonal swings.
A result at or above EPA's 4.0 pCi/L action level calls for a confirming test or mitigation. Retest after a mitigation system goes in, and at least every two years from then on. Pennsylvania requires DEP certification for anyone who tests as a paid service; you may test your own home with a kit from a DEP-certified laboratory. For a home sale, read the Pennsylvania real estate radon testing guide.
Local Geology & Risk Factors
Wilkes-Barre is located in an area with Wyoming Valley Anthracite Basin / Pennsylvanian Shale geology, which contributes to elevated radon levels. The Pennsylvania DEP identifies this region as having significant radon potential due to uranium-bearing rock formations.
Testing is essential because radon levels can vary significantly between neighboring homes based on construction, soil permeability, and ventilation.
See Pennsylvania radon levels and EPA radon zone classifications →
On June 23, 1972, Tropical Storm Agnes drove the Susquehanna River to a record crest of 40.91 feet at Wilkes-Barre — over 11 feet above flood stage. The Wyoming Valley was devastated. Over 25,000 homes were damaged or destroyed, and the reconstruction effort that followed reshaped the subsurface conditions of entire neighborhoods. Foundation soils were disturbed, rebuilt, and backfilled with material that in many cases differed from the original undisturbed ground. Homes were rebuilt on reworked soil over mine-altered bedrock — creating a layered subsurface that produces radon conditions unlike anywhere else in Pennsylvania. The Knox Mine Disaster of 1959 — when the Susquehanna River broke through into mine workings beneath the river bed near Pittston, flooding the mines and killing 12 miners — effectively ended large-scale deep mining in the Wyoming Valley.
Quick Facts
- Median home value: $108,000 · Median year built: 1943
- Population: 44,217
- Foundation types: Basement (predominant in Wyoming Valley housing); Stone foundation (older hillside neighborhoods); Slab-on-grade (newer suburban development)
Luzerne County Context
Wilkes-Barre is a municipality of Luzerne County, EPA Zone 1. Zone designation is assigned at the county level, so Wilkes-Barre inherits its classification; countywide aggregate figures live on the county page.
See Luzerne County radon aggregate data →Measured Radon Data for Wilkes-Barre
These figures cover every test whose ZIP code is listed above. ZIP codes do not follow municipal lines, so the figures describe Wilkes-Barre-area ZIP codes, not the municipal boundary of Wilkes-Barre. They count tests, not homes.
Source: PA Department of Environmental Protection, Radon Test Results, data.pa.gov. Tests through July 2026. Retrieved September 29, 2026.
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Radon Mitigation Cost in Wilkes-Barre
Active sub-slab depressurization (ASD) systems in Wilkes-Barre typically cost $900–$2,300. Standard basement installs on modern poured concrete fall at the lower end; historic foundations, block-wall depressurization, multi-point suction, and crawlspace encapsulation push costs higher.
Foundations covered locally
- Basement (predominant in Wyoming Valley housing)
- Stone foundation (older hillside neighborhoods)
- Slab-on-grade (newer suburban development)
Systems used in the region
- Active sub-slab depressurization
- Block wall depressurization
- Sump encapsulation
Certification & Compliance
All Pennsylvania radon testing and mitigation professionals must hold active PA DEP certification. Ask any contractor for their certification number and verify it before signing.
Pennsylvania's Real Estate Seller Disclosure Law (68 Pa.C.S. §§ 7301–7315) requires sellers to disclose known material defects to buyers under § 7303; the mandated disclosure form records radon under § 7304(b)(14). Sellers who have never tested are not compelled to test — § 7308 imposes no affirmative duty to investigate — but pre-listing testing is standard practice across most PA markets.
Under 25 Pa. Code § 240 — the Pennsylvania chapter governing radon certification — every radon service provider working in the Commonwealth must hold current DEP certification. Verify the contractor's status via the DEP Radon Services Directory before hiring.
Verify Contractor Certification — PA DEP Official Directory for Wilkes-Barre, Luzerne County
View PA DEP Certified Contractor DirectoryThe PA Department of Environmental Protection maintains the official list of certified radon testers and mitigators, sorted by county and updated monthly. Always verify certification before hiring any contractor.
Directory resource provided by PA DEP Bureau of Radiation Protection, Radon Division.
Frequently Asked Questions
How does Wyoming Valley coal mining history affect radon in Wilkes-Barre?
Wilkes-Barre sits at the center of the Wyoming Valley anthracite coal basin, where deep mine workings left interconnected void networks beneath the city. These abandoned mine voids serve as subsurface radon collection chambers that can concentrate and channel radon from uranium-bearing rock into homes above. The 1972 Agnes Flood reconstruction also disturbed foundation soils across large portions of the city.
What radon mitigation approaches work for Wilkes-Barre's older homes?
Wilkes-Barre's pre-1960 Wyoming Valley housing stock frequently has hollow concrete block or stone foundations requiring block wall depressurization. DEP-certified contractors perform pressure field extension tests before system specification. Properties near documented mine footprints require additional diagnostic assessment before ASD installation.
What does radon mitigation cost in Wilkes-Barre?
Wilkes-Barre radon mitigation systems typically cost $900–$2,300. Block and stone foundation homes cost more than standard poured concrete construction. Mining-influenced subsurface zones may require additional diagnostic testing. Request quotes from at least three DEP-certified Luzerne County contractors.
What share of radon tests in Wilkes-Barre-area ZIP codes are at or above the EPA action level?
19% of the 13,764 basement tests reported to PA DEP from Wilkes-Barre-area ZIP codes measured 4.0 pCi/L or higher, 18 points below the 37% statewide share. The median result is 1.9 pCi/L. Of 1,875 first-floor tests, 6% measured 4.0 pCi/L or higher. The figures cover the ZIP codes listed on this page, not the municipal boundary, and they count tests, not homes.
Do homes in Wilkes-Barre need to be tested for radon?
Luzerne County is EPA Zone 1 — the highest radon-potential classification — so every home in Wilkes-Barre should be tested regardless of age, foundation type, or neighborhood. Short-term charcoal or continuous monitor tests take 48–96 hours and cost $15–$50; long-term alpha-track tests run 90 days and better represent annual averages. If the result meets or exceeds 4.0 pCi/L, mitigation by a DEP-certified professional is recommended.
How much does radon mitigation cost in Wilkes-Barre?
Active sub-slab depressurization (ASD) systems in the Wilkes-Barre area typically cost $900–$2,300. Standard basement installations on modern poured-concrete foundations fall at the lower end; historic foundations, block-wall depressurization, multi-point suction, and crawlspace encapsulation push costs toward the upper end. All work must be performed by a DEP-certified mitigation professional under 25 Pa. Code § 240.
Is radon disclosure required when selling a home in Wilkes-Barre?
Pennsylvania's Real Estate Seller Disclosure Law (68 Pa.C.S. §§ 7301–7315) requires residential sellers to disclose known material defects to buyers (§ 7303). The state-mandated disclosure form covers 'presence of hazardous substances' at § 7304(b)(14) — where any known elevated radon test result or existing mitigation system is recorded. Sellers who have never tested are not required to test: § 7308 imposes no affirmative duty to investigate. In Wilkes-Barre, the practical reality is that most buyers request radon testing during the inspection contingency period. Sellers who test and mitigate before listing eliminate the most common contract contingency and preserve negotiating position.
Which ZIP codes does the Wilkes-Barre radon data cover?
The Wilkes-Barre radon dataset on this page covers ZIP codes 18701, 18702, 18704, and 18705. These are the ZCTAs assigned to Wilkes-Barre in the Census 2020 ZCTA-to-Place relationship file, and the page counts every test in the PA DEP record on data.pa.gov that carries one of them. A ZIP code can reach into a neighboring municipality, so the figures describe these ZIP codes rather than Wilkes-Barre's municipal boundary.
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