Radon Answers for Pennsylvania Homeowners
Plain-English guides on testing, mitigation, home sales, and radon risk — grounded in PA DEP standards.
Radon in Western Pennsylvania: What a DEP-Certified Contractor Actually Finds | PA Radon Hub
DEP-certified radon professional Alex Micco on what drives radon risk in western Pennsylvania — uranium in the underlying rock, soil permeability, gravel sub-slab in newer homes, and coal mine voids — and what mitigation costs, how ASD works, and what sellers get wrong on disclosure.
Read the interviewConsumer Digital Radon Monitors vs. Certified Test Kits: What Pennsylvania Homeowners Must Know
CRCPD Publication 25-4 warns that consumer digital radon monitors (CDRMs) have not been verified by an independent third-party and must not be used in real estate transactions or mitigation decisions. Here is what that means for Pennsylvania homeowners.
Post-Mitigation Radon Testing Requirements in Pennsylvania: What the Law Requires and What It Doesn't Tell You
Pennsylvania Radon Mitigation Standards (294-2309-002) require a post-mitigation radon test no sooner than 24 hours and no later than 30 days after system activation. This guide covers the full protocol: device requirements, closed-house conditions, placement, what the manometer does and doesn't tell you, and when to retest.
Sub-Slab Communication Testing for Radon Mitigation in Pennsylvania: What It Is and Why It Determines System Design
Sub-slab communication testing is the diagnostic procedure that determines whether one suction pit can cover your entire foundation or multiple pits are required. Pennsylvania Radon Mitigation Standards § 11.4 recommend it before any SSD system installation. This guide covers the procedure, interpretation, and what happens when contractors skip it.
Radon in Well Water in Pennsylvania: Testing, Health Risks, and Treatment Options
Pennsylvania homes served by private wells or small community groundwater systems may have radon in water in addition to radon in air. This guide covers the 10,000:1 conversion rule, aeration vs. GAC treatment, testing costs, and when to test water vs. air first.
Radon Mitigation in Pennsylvania Crawl Spaces: Sub-Membrane Depressurization, Ventilation, and DEP Standards
Crawl space homes in Pennsylvania require different radon mitigation approaches than basement or slab-on-grade construction. This guide covers sub-membrane depressurization (SMD), crawl space ventilation, membrane sealing requirements under PA Code § 240.308, and why SMD outperforms ventilation in Pennsylvania's climate.
Radon in New Construction Pennsylvania: Passive Systems, Code Requirements, and When to Activate
Pennsylvania's Uniform Construction Code requires passive radon-resistant rough-ins in new homes in EPA Zone 1 counties. This guide covers what passive systems include, why they are not enough in high-radon geology, when to activate with a fan, and what ANSI-AARST CC-1000 requires for new school construction under SB 760.
How to Hire a DEP-Certified Radon Mitigation Contractor in Pennsylvania: The Complete Checklist
Pennsylvania law requires radon mitigation contractors to hold active DEP certification under PA Code § 240. This checklist covers contractor verification, pre-installation diagnostics, contract requirements, and post-mitigation testing — drawn from Pennsylvania Radon Mitigation Standards document 294-2309-002.
Radon Myths and Facts: 15 Misconceptions Pennsylvania Homeowners Get Wrong
Pennsylvania DEP, EPA, and CRCPD sources debunk the most common radon myths — from 'my neighbor tested fine so I'm fine' to 'digital monitors are accurate enough.' Covers testing, mitigation, real estate disclosure, and SB 760 misconceptions specific to Pennsylvania.
Radon Testing in Pennsylvania Real Estate Transactions: Disclosure Law, Testing Protocol, and Buyer Protection
Pennsylvania's Real Estate Seller Disclosure Law requires sellers to disclose known radon results but does not mandate testing. This guide covers 68 Pa.C.S. § 7301 et seq., ANSI/AARST MALB testing protocol, what to do when results exceed 4 pCi/L, and how SB 760 is changing the 2026 market.
The Reading Prong: Why Northeastern Pennsylvania Is America's Radon Epicenter
The Reading Prong is a 1.1-billion-year-old metamorphic rock formation running beneath Northampton, Lehigh, Berks, Bucks, and Montgomery counties. It contains among the highest uranium-238 concentrations of any residential geology in the United States — and it is the primary driver of Pennsylvania's radon crisis.
Radon and Ovarian Cancer Risk: What a 2026 JAMA Study Means for Pennsylvania Homeowners
A 2026 JAMA Network Open study of 127,547 women found that living in high-radon areas (above 4 pCi/L) was associated with a hazard ratio of 1.31 for ovarian cancer. Pennsylvania’s Reading Prong counties are USGS Zone 1.
Active vs. Passive Radon Mitigation: Which System Is Right for Your Pennsylvania Home
Pennsylvania's climate and geology make active sub-slab depressurization the standard mitigation method. Learn the engineering difference between ASD and passive systems, fan selection, and what post-installation testing confirms.
How to Hire a DEP-Certified Radon Contractor in Pennsylvania: The Complete Verification Guide
PA Code Title 25, Chapter 240 requires DEP certification for any paid radon mitigation work. Learn how to verify a contractor's active certification, what a pre-installation diagnostic must include, and the five questions that identify unqualified contractors.
Active Sub-Slab Depressurization (ASD): Engineering Standards for Pennsylvania Homeowners
How ASD radon mitigation systems work at the engineering level: pressure field extension, fan selection, pipe routing, PA DEP certification, and post-mitigation testing. Statewide cost: $843–$2,529.
Pennsylvania Radon Geology: Reading Prong, Karst Limestone, Marcellus Shale
How five Pennsylvania bedrock systems — Reading Prong granite, Ordovician karst, Marcellus Shale, Great Valley carbonates, and coal basins — shape indoor radon risk, with formation-level data and county exceedance rates.