--- title: "Certified Radon Mitigation & Testing in Washington County, PA | Radon Roster" description: "7 PA DEP-certified radon firms in Washington County: 34% of basement tests at or above 4 pCi/L. Contacts, DEP cert IDs and local data." canonical: https://radonroster.com/pa/county/washington/ --- [Pennsylvania](https://radonroster.com/)›[Counties](https://radonroster.com/pa/counties/)›Washington # Radon testing & mitigation in Washington County, PA 34% of basement tests here came back at or above 4 pCi/L, a little under the statewide 37%. That means about one in 3 homes tested needs a fix. ## Washington County radon test data Washington**34%** Statewide**37%** Share of basement tests ≥ 4 pCi/L **2.9**median basement pCi/L **38,759**basement tests on record **#54**of 67 PA counties by share ≥ 4 First floor: **21%** of 2,316 tests ≥ 4 pCi/L, median 1.8 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. **7 DEP-certified firms** have a business address in Washington County (1 offer mitigation), with 17 certified individuals between them. [Get free quotes](https://radonroster.com/get-quotes/?county=washington) [Mitigation1](#mitigation)[Testing6](#testing)Labs 0Ordered by town, then name · never by payment ## Radon mitigation (reduction systems) (1 firm) Firms certified to install radon reduction systems. Firms that also test are shown here once. ### Home Radon Pros ✓ PA DEP certifiedMitigationTesting Venetia9 certified people #### Address * 549 Mccombs Rd, Venetia, PA * ✉ [bkail@homeradonpros.com](mailto:bkail@homeradonpros.com) * ✉ [jlanham@homeradonpros.com](mailto:jlanham@homeradonpros.com) * [homeradonpros.com](https://www.homeradonpros.com/) #### Certified individuals * Anesin, Richard (mitigation #7704) * Broomhead, Steven (mitigation #7673) * Kail, Alexander (mitigation #7703) * Kail, William (testing #3238, mitigation #3238) * Kail, William Jr. (mitigation #7674) * Lanham, Joshua (mitigation #7602) * Mcauley, Daniel (mitigation #7600) * Mihalik, Joseph (mitigation #7264) * Moon, Ethan (mitigation #7718) #### DEP cert IDs mitigation #3238 · mitigation #3476 · mitigation #7264 · mitigation #7600 · mitigation #7602 · mitigation #7673 · mitigation #7674 · mitigation #7703 · mitigation #7704 · mitigation #7718 · testing #3238 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/CountyMitigation.pdf) [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=F3238) [**Call** (412) 584-0799](tel:4125840799) ## Radon testing (6 firms) ### Heritage Home Insp ⚠ Name may be cut off in DEP records ✓ PA DEP certifiedTesting Canonsburg1 certified person #### Address * 1148 Meadow Brook Drive, Canonsburg, PA * ✉ [steve@heritagehomeinspectors.com](mailto:steve@heritagehomeinspectors.com) #### Certified individuals * Sobetsky, Cami (testing #9003) #### DEP cert IDs testing #9003 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/WebTestAlpha.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F9003) [**Call** (888) 308-4018](tel:8883084018) ### Heritage Home Inspectors ✓ PA DEP certifiedTesting Canonsburg3 certified people #### Address * 1148 Meadowbrook Dr, Canonsburg, PA * ✉ [steve@heritagehomeinspector.com](mailto:steve@heritagehomeinspector.com) * [heritagehomeinspector.com](https://www.heritagehomeinspector.com/) #### Certified individuals * Clifford, Tyler (testing #9076) * Morris, Stephen (testing #3335) * Morris,Evan (testing #9131) #### DEP cert IDs testing #3335 · testing #3569 · testing #9076 · testing #9131 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=F3335) [**Call** (888) 308-4018](tel:8883084018) ### Jaworski, Mark ✓ PA DEP certifiedTesting Canonsburg1 certified person #### Address * 75 Putorti Ln, Canonsburg, PA * ✉ [mark@jaworskiremodeling.com](mailto:mark@jaworskiremodeling.com) #### Certified individuals * Jaworski, Mark (testing #2935) #### DEP cert IDs testing #2935 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=F2935) [**Call** (412) 583-7962](tel:4125837962) ### Lydic, Joseph ✓ PA DEP certifiedTesting Canonsburg1 certified person #### Address * 3935 Washington Rd., Canonsburg, PA * ✉ [peakinspectorjoe@gmail.com](mailto:peakinspectorjoe@gmail.com) #### Certified individuals * Lydic, Joseph (testing #3397) #### DEP cert IDs testing #3397 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=F3397) [**Call** (412) 912-8686](tel:4129128686) ### Tayzak Inc ✓ PA DEP certifiedTesting Mc Donald1 certified person #### Address * 523 Burnside Rd, Mc Donald, PA * ✉ jim.zaminska@pillartopost,com (as listed (as printed by DEP; may be incomplete) * ✉ may be truncated) (as printed by DEP; may be incomplete) #### Certified individuals * Bellhy, Thomas (testing #8854) #### DEP cert IDs testing #8854 Source: [DEP list](https://files.dep.state.pa.us/RadiationProtection/RadonDivision/RDPortalFiles/2026/10_01/WebTestAlpha.pdf), retrieved 2026-10-11 · [Claim, correct or remove this listing](https://radonroster.com/claim-listing/?firm=F8854) [**Call** (724) 513-0832](tel:7245130832) ### Klein Jr., Robert Scott ✓ PA DEP certifiedTesting Mcmurray1 certified person #### Address * 4017 Washington Rd, Mcmurray, PA * ✉ [scottdhis@gmail.com](mailto:scottdhis@gmail.com) #### Certified individuals * Klein Jr., Robert Scott (testing #2880) #### DEP cert IDs testing #2880 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=F2880) [**Call** (724) 413-5522](tel:7244135522) ## Neighboring counties [Allegheny](https://radonroster.com/pa/county/allegheny/) (44 firms) · [Beaver](https://radonroster.com/pa/county/beaver/) (6 firms) · [Fayette](https://radonroster.com/pa/county/fayette/) (3 firms) · [Greene](https://radonroster.com/pa/county/greene/) (0 firms) · [Westmoreland](https://radonroster.com/pa/county/westmoreland/) (17 firms). Firms often serve across county lines. Adjacency from U.S. Census Bureau county adjacency file. ## City pages & guides [Canonsburg](https://radonroster.com/pa/city/canonsburg-pa/) ([guide](https://radonroster.com/pa/city/canonsburg-pa/radon-guide/)) ## Hiring a radon pro in Washington County: quick guide With 34% of 38,759 basement tests at or above 4 pCi/L (below the 37% statewide share), Washington County has 1 DEP-certified mitigation firm 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 Canonsburg](https://radonroster.com/pa/city/canonsburg-pa/radon-guide/) ## Frequently asked questions **How many certified radon mitigation firms are in Washington County?** 1 DEP-certified firms offering mitigation and 7 certified radon firms in total list a business address in Washington County (PA DEP lists dated 10/01/2026). Firms from neighboring counties may also serve the area. **What share of Washington County radon tests are high?** 34% of 38,759 basement tests in PA DEP's records were at or above EPA's 4 pCi/L action level, with a median of 2.9 pCi/L. **How much does radon mitigation cost in Washington 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 Washington mitigators[Request quotes](https://radonroster.com/get-quotes/?county=washington) Our advice ## Before you hire in Washington 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 Washington. [Request quotes](https://radonroster.com/get-quotes/?county=washington)