Radon Testing & Mitigation in Erie, PA
Moderate radon risk from Appalachian Plateau shale underlain by glacially deposited till. Lake Erie's proximity moderates radon concentrations but glacial till soil creates localized high-entry-point risk.
Moderate Radon Risk Area
Erie sits in EPA Zone 2 — testing is recommended for every home regardless of age or foundation type.
Radon Testing in Erie
In Erie-area ZIP codes, 24% of 27,731 basement tests reported to PA DEP measured 4.0 pCi/L or higher, with a median of 2.0 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
Erie is located in an area with Appalachian Plateau / Glacial Till 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 →
Erie averages over 100 inches of snow annually. Heating seasons extend from October through April. Homes are sealed tight for six to seven months of the year, with indoor temperatures held at 68°F while outdoor temperatures routinely drop below 20°F. The resulting stack effect — the negative basement pressure that draws soil gas through foundation pathways — is more intense and more sustained in Erie than anywhere else in Pennsylvania. Erie's average January temperature is 27°F. The average heating season extends roughly 210 days — from mid-October through mid-May. Lake effect snow events can drop temperatures rapidly and keep them suppressed for extended periods.
Quick Facts
- Median home value: $108,200 · Median year built: 1950
- Population: 94,156
- Foundation types: Basement (predominant in Erie's older housing); Crawlspace (lakefront properties); Slab-on-grade (newer construction)
Erie County Context
Erie is a municipality of Erie County, EPA Zone 2. Zone designation is assigned at the county level, so Erie inherits its classification; countywide aggregate figures live on the county page.
See Erie County radon aggregate data →Measured Radon Data for Erie
13 ZIP codes
16501 (Erie), 16502 (Erie), 16503 (Erie), 16504 (Erie), 16505 (Erie), 16506 (Erie), 16507 (Erie), 16508 (Erie), 16509 (Erie), 16510 (Erie), 16511 (Erie), 16546 (Erie), 16550 (Erie)
These figures cover every test whose ZIP code is listed above. ZIP codes do not follow municipal lines, so the figures describe Erie-area ZIP codes, not the municipal boundary of Erie. 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 Erie
Active sub-slab depressurization (ASD) systems in Erie typically cost $875–$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 (predominant in Erie's older housing)
- Crawlspace (lakefront properties)
- Slab-on-grade (newer construction)
Systems used in the region
- Active sub-slab depressurization
- Sump pit depressurization
- Crawlspace 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 Erie, Erie 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
Is radon a concern in Erie, PA?
Yes. Erie sits on Appalachian Plateau shale with glacially deposited till overburden. While the Zone 2 classification indicates lower average risk than southeast PA, 24% of the 27,731 basement tests reported to PA DEP from Erie-area ZIP codes measured 4.0 pCi/L or higher. DEP recommends testing all PA homes including those in Erie County.
Does the winter stack effect increase radon risk in Erie?
Yes, significantly. Erie's harsh winters create strong negative pressure gradients ('stack effect') inside homes as warm air rises and escapes. This draws radon-laden soil gas upward through foundation cracks and sump pits. Testing during winter months often reveals the highest annual radon concentrations in Erie homes.
What does radon mitigation cost in Erie?
Erie area radon mitigation systems typically cost $875–$2,200. Erie's older housing stock with stone or block foundations may require specialized installation approaches. Sump pit depressurization is common given Erie's high water table near Lake Erie. Request quotes from DEP-certified Erie County contractors.
What share of radon tests in Erie-area ZIP codes are at or above the EPA action level?
24% of the 27,731 basement tests reported to PA DEP from Erie-area ZIP codes measured 4.0 pCi/L or higher, 13 points below the 37% statewide share. The median result is 2.0 pCi/L. Of 2,692 first-floor tests, 12% 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 Erie need to be tested for radon?
Erie County is EPA Zone 2, meaning the county has moderate radon potential and elevated readings are common enough that all Erie 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 Erie?
Active sub-slab depressurization (ASD) systems in the Erie area typically cost $875–$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 Erie?
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 Erie, 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 Erie radon data cover?
The Erie radon dataset on this page covers ZIP codes 16501, 16502, 16503, 16504, 16505, 16506, 16507, 16508, 16509, 16510, 16511, 16546, and 16550. These are the ZCTAs assigned to Erie 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 Erie's municipal boundary.
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