--- title: "Certified Radon Mitigation & Testing in Philadelphia County, PA | Radon Roster" description: "10 PA DEP-certified radon firms in Philadelphia County: 12% of basement tests at or above 4 pCi/L. Contacts, DEP cert IDs and local data." canonical: https://radonroster.com/pa/county/philadelphia/ --- [Pennsylvania](https://radonroster.com/)›[Counties](https://radonroster.com/pa/counties/)›Philadelphia # Radon testing & mitigation in Philadelphia County, PA 12% of basement tests here came back at or above 4 pCi/L, well below the statewide 37%. Neighboring houses can still test very differently, so every home should be tested. ## Philadelphia County radon test data Philadelphia**12%** Statewide**37%** Share of basement tests ≥ 4 pCi/L **1.7**median basement pCi/L **155,445**basement tests on record **#67**of 67 PA counties by share ≥ 4 First floor: **5%** of 20,065 tests ≥ 4 pCi/L, median 1.0 Source: computed 2026-10-11 from PA DEP's [Radon Test Results, Sept 1986 - Current](https://data.pa.gov/Energy-and-the-Environment/Radon-Test-Results-September-1986-Current-Annual-C/vkjb-sx3k) (data.pa.gov, public domain). Counts tests, not homes: repeat and post-mitigation tests are included. Only a test tells you your home's level. **10 DEP-certified firms** have a business address in Philadelphia County (2 offer mitigation), with 17 certified individuals between them. [Get free quotes](https://radonroster.com/get-quotes/?county=philadelphia) [Mitigation2](#mitigation)[Testing8](#testing)Labs 0Ordered by town, then name · never by payment ## Radon mitigation (reduction systems) (2 firms) Firms certified to install radon reduction systems. Firms that also test are shown here once. ### Rvs Radon Mitigation ⚠ Name may be cut off in DEP records ✓ PA DEP certifiedMitigation Philadelphia1 certified person #### Address * 294 E Cheltenham Ave, Philadelphia, PA #### Certified individuals * Tabora, Bryann (mitigation #7735) #### DEP cert IDs mitigation #7735 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyMitigation.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F7735) [**Call** (267) 269-5573](tel:2672695573) ### Rvs Radon Mitigation, LLC. ✓ PA DEP certifiedMitigation Philadelphia3 certified people #### Address * 294 E Cheltenham Ave, Philadelphia, PA * ✉ [tony@rvsradon.com](mailto:tony@rvsradon.com) * [rvsradon.com](https://www.rvsradon.com/) #### Certified individuals * Bastidas, Juan D. (mitigation #7697) * Gonzalez, Juan Antonio (mitigation #3458) * Tituana, Ivan (mitigation #7725) #### DEP cert IDs mitigation #3458 · mitigation #3594 · mitigation #7697 · mitigation #7725 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyMitigation.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F3458) [**Call** (267) 269-5573](tel:2672695573) ## Radon testing (8 firms) ### Borkowski, Patrick ✓ PA DEP certifiedTesting Philadelphia1 certified person #### Address * Po Box 63827, Philadelphia, PA * ✉ [info@apexinspections.net](mailto:info@apexinspections.net) * [apexinspections.net](https://apexinspections.net/) #### Certified individuals * Borkowski, Patrick (testing #2497) #### DEP cert IDs testing #2497 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F2497) [**Call** (888) 927-3944](tel:8889273944) ### Dunn, Jr., William ✓ PA DEP certifiedTesting Philadelphia1 certified person #### Address * 3111 S 19Th St, Philadelphia, PA * ✉ [willdunn430@gmail.com](mailto:willdunn430@gmail.com) #### Certified individuals * Dunn, Jr., William (testing #3374) #### DEP cert IDs testing #3374 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F3374) [**Call** (215) 284-1737](tel:2152841737) ### Geo Environmental ✓ PA DEP certifiedTesting Philadelphia1 certified person #### Address * Po Box 33450, Philadelphia, PA * ✉ [geotristate@gmail.com](mailto:geotristate@gmail.com) #### Certified individuals * Lerro, Joseph (testing #8701) #### DEP cert IDs testing #8701 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F8701) [**Call** (215) 778-7118](tel:2157787118) ### Lampe, Bruce D. ✓ PA DEP certifiedTesting Philadelphia1 certified person #### Address * 9615 Berea St, Philadelphia, PA * ✉ [medhomeinsp@aol.com](mailto:medhomeinsp@aol.com) #### Certified individuals * Lampe, Bruce D. (testing #2188) #### DEP cert IDs testing #2188 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F2188) [**Call** (215) 632-4220](tel:2156324220) ### Mazzio, Michael ✓ PA DEP certifiedTesting Philadelphia1 certified person #### Address * 8203 Dorcas St, Philadelphia, PA * ✉ [absoluteenvirotesting@gmail.co](mailto:absoluteenvirotesting@gmail.co) #### Certified individuals * Mazzio, Michael (testing #3677) #### DEP cert IDs testing #3677 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F3677) [**Call** (215) 280-5473](tel:2152805473) ### Serrano, Moises ✓ PA DEP certifiedTesting Philadelphia1 certified person #### Address * 3446 Reach Street, Philadelphia, PA * ✉ [moises@libertyradondiagnostics.com](mailto:moises@libertyradondiagnostics.com) #### Certified individuals * Serrano, Moises (testing #3746) #### DEP cert IDs testing #3746 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F3746) [**Call** (215) 800-9528](tel:2158009528) ### Valueguard Usa, Inc. ✓ PA DEP certifiedTesting Philadelphia6 certified people #### Address * 100 E Penn Sq Ste 400, Philadelphia, PA * ✉ [chase@valueguardusa.com](mailto:chase@valueguardusa.com) * ✉ [team@valueguardusa.com](mailto:team@valueguardusa.com) #### Certified individuals * Baltrush, Michael (testing #9053) * Gilger, Tyler (testing #9030) * Maralado, Matt (testing #8788) * Millard, Chase (testing #2740) * Royer, James (testing #9031) * Shalaway, Cory (testing #9016) #### DEP cert IDs testing #1910 · testing #2740 · testing #8788 · testing #9016 · testing #9030 · testing #9031 · testing #9053 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F1910) [**Call** (215) 860-3150](tel:2158603150) ### Yeager, Joseph ✓ PA DEP certifiedTesting Philadelphia1 certified person #### Address * 185 Levering Street, Philadelphia, PA * ✉ [joseph.s.yeager@gmail.com](mailto:joseph.s.yeager@gmail.com) #### Certified individuals * Yeager, Joseph (testing #3503) #### DEP cert IDs testing #3503 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyTest.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F3503) [**Call** (215) 205-4453](tel:2152054453) ## Neighboring counties [Bucks](https://radonroster.com/pa/county/bucks/) (19 firms) · [Delaware](https://radonroster.com/pa/county/delaware/) (12 firms) · [Montgomery](https://radonroster.com/pa/county/montgomery/) (29 firms). Firms often serve across county lines. Adjacency from U.S. Census Bureau county adjacency file. ## City pages & guides [Philadelphia](https://radonroster.com/pa/city/philadelphia-pa/) ([guide](https://radonroster.com/pa/city/philadelphia-pa/radon-guide/)) ## Hiring a radon pro in Philadelphia County: quick guide With 12% of 155,445 basement tests at or above 4 pCi/L (below the 37% statewide share), Philadelphia County has 2 DEP-certified mitigation firms based locally. * **Verify:** check the firm in the [PA DEP Radon Services Directory](https://www.pa.gov/agencies/dep/programs-and-services/radiation-protection/radon-division/radon-services-directory), ask for the DEP ID ([25 Pa. Code Chapter 240](https://files.dep.state.pa.us/RadiationProtection/BureauOfRadiationProtection/BRPPortalFiles/Chapter_240_2015-04-23.pdf)), or call 800-237-2366. * **Typical cost:** $786-$1,274 for a mitigation system, national range from the [HomeAdvisor cost guide](https://www.homeadvisor.com/cost/environmental-safety/remove-radon-gas/). * **Selling or buying:** PA's seller disclosure form asks about known radon and past tests ([49 Pa. Code § 35.335a](https://www.pacodeandbulletin.gov/secure/pacode/data/049/chapter35/s35.335a.html)). Detailed local guides: [How to find a radon expert in Philadelphia](https://radonroster.com/pa/city/philadelphia-pa/radon-guide/) ## Frequently asked questions **How many certified radon mitigation firms are in Philadelphia County?** 2 DEP-certified firms offering mitigation and 10 certified radon firms in total list a business address in Philadelphia County (PA DEP lists dated 10/01/2026). Firms from neighboring counties may also serve the area. **What share of Philadelphia County radon tests are high?** 12% of 155,445 basement tests in PA DEP's records were at or above EPA's 4 pCi/L action level, with a median of 1.7 pCi/L. **How much does radon mitigation cost in Philadelphia County?** We don't have county-specific price data. A national cost guide reports typical installs at $786-$1,274. Get written quotes from DEP-certified mitigators. **Want firms to contact you?**One request to Philadelphia mitigators[Request quotes](https://radonroster.com/get-quotes/?county=philadelphia) Our advice ## Before you hire in Philadelphia 1. Ask for the DEP cert ID and match it to the listing. 2. Get at least two written quotes for mitigation. 3. Retest after the system is installed. PA Radon Hotline **800-237-2366** Typical mitigation cost $786–$1,274 National range (HomeAdvisor). No local price data; quotes vary by foundation type. [Estimate your cost →](https://radonroster.com/radon-mitigation-cost/) ## Want firms to contact you? Send one request to certified mitigators who serve Philadelphia. [Request quotes](https://radonroster.com/get-quotes/?county=philadelphia)