Radon Mitigation in Uniontown
Very high radon potential. The Chestnut Ridge Anticline brings uranium-bearing Pennsylvanian formations close to the surface, producing some of southwestern PA's highest indoor radon readings.
Moderate Radon Risk Area
Uniontown sits in EPA Zone 2 — testing is recommended for every home regardless of age or foundation type.
Local Geology & Risk Factors
Uniontown is located in an area with Appalachian Plateau / Chestnut Ridge Anticline 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 →
Quick Facts
- Median home value: $87,600 · Median year built: 1938
- Population: 9,819
- Foundation types: Basement (most common); Crawlspace (moderate); Slab-on-grade (varies)
Fayette County Context
Uniontown is a municipality of Fayette County, EPA Zone 2. Zone designation is assigned at the county level, so Uniontown inherits its classification; countywide aggregate figures live on the county page.
See Fayette County radon aggregate data →Measured Radon Data for Uniontown
Source: PA DEP RadonZip Tool, January 1990 – December 2025 · Updated 2026-05-20
Radon Mitigation Cost in Uniontown
Active sub-slab depressurization (ASD) systems in Uniontown typically cost $900–$2,200. 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 (most common)
- Crawlspace (moderate)
- Slab-on-grade (varies)
Systems used in the region
- Active sub-slab depressurization
- Sump pit depressurization
- Passive soil depressurization
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 Uniontown, Fayette 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
Why does Uniontown have such high radon levels?
Uniontown sits at the western foot of the Chestnut Ridge Anticline, where uplift has brought uranium-bearing Pennsylvanian sandstone and shale near the surface. This concentrated radium-226 source produces consistently elevated soil-gas radon — about 50% of tested Fayette County homes exceed 4.0 pCi/L.
What does radon mitigation cost in Uniontown, PA?
Most Uniontown mitigation systems run $900–$2,200 installed. The high baseline radon means systems often require larger fans (Fantech RP-265 or equivalent) to achieve sub-action-level indoor concentrations. DEP-certified contractors provide quotes that account for the elevated source.
Are homes near the Chestnut Ridge at higher risk?
Yes. Properties along the western slope of Chestnut Ridge — including parts of South Union, North Union, and Hopwood — sit directly over the anticline's uranium-enriched formations. Test results in these neighborhoods commonly exceed 8–12 pCi/L before mitigation.
What's the average radon level in Uniontown?
Uniontown's DEP-recorded basement average is 4.15 pCi/L across 1,033 tests. The EPA action level for mitigation is 4.0 pCi/L, so a sizable share of Uniontown homes exceed the threshold. The highest single result in the local dataset is 46.2 pCi/L.
Do homes in Uniontown need to be tested for radon?
Fayette County is EPA Zone 2, meaning the county has moderate radon potential and elevated readings are common enough that all Uniontown homes should be tested. 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 Uniontown?
Active sub-slab depressurization (ASD) systems in the Uniontown area typically cost $900–$2,200. 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 Uniontown?
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 Uniontown, 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 Uniontown radon data cover?
The Uniontown radon dataset on this page covers ZIP code 15401. These are the ZCTAs assigned to Uniontown in the Census 2020 ZCTA-to-Place relationship file and used for the PA DEP RadonZip Tool aggregation. Neighboring ZIP codes belong to adjacent municipalities and appear on their own PA Radon Hub pages.
Are Uniontown Area School District buildings subject to SB 760?
Fayette County is in EPA Zone 2 and is served by 8 school districts, including Uniontown Area School District. Pennsylvania Senate Bill 760, if enacted as drafted, would apply to all public school buildings in Fayette County regardless of which district operates them. The bill remains in committee. Buildings in Zone 2 counties like Fayette County would be included in the proposed framework. If SB 760 is enacted, mitigation timelines, thresholds, and qualifying buildings would be set by the final bill text and any subsequent DEP implementing regulations. PA Radon Hub tracks this legislation; specific deadlines remain pending.
Connect with a DEP-Certified Radon Pro in Uniontown
Submit your request and we will connect you with a DEP-certified professional serving Fayette County.
(717) 461-2427Connect with a DEP-certified radon pro