--- title: "Certified Radon Mitigation & Testing in Warren County, PA | Radon Roster" description: "1 PA DEP-certified radon firms in Warren County: 47% of basement tests at or above 4 pCi/L. Contacts, DEP cert IDs and local data." canonical: https://radonroster.com/pa/county/warren/ --- [Pennsylvania](https://radonroster.com/)›[Counties](https://radonroster.com/pa/counties/)›Warren # Radon testing & mitigation in Warren County, PA 47% of basement tests here came back at or above 4 pCi/L, well above the statewide 37%. That means about one in 2 homes tested needs a fix. ## Warren County radon test data Warren**47%** Statewide**37%** Share of basement tests ≥ 4 pCi/L **3.7**median basement pCi/L **3,863**basement tests on record **#30**of 67 PA counties by share ≥ 4 First floor: **26%** of 613 tests ≥ 4 pCi/L, median 1.9 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. **1 DEP-certified firms** have a business address in Warren County (1 offer mitigation), with 1 certified individuals between them. [Get free quotes](https://radonroster.com/get-quotes/?county=warren) [Mitigation1](#mitigation)Testing 0Labs 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. ### Shaw, Matthew ✓ PA DEP certifiedMitigationTesting Pittsfield1 certified person #### Address * 7735 Davey Hill Rd, Pittsfield, PA * ✉ [eagleeyeinspection74@gmail.com](mailto:eagleeyeinspection74@gmail.com) #### Certified individuals * Shaw, Matthew (testing #3193, mitigation #3193) #### DEP cert IDs mitigation #3193 · testing #3193 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=F3193) [**Call** (814) 516-6368](tel:8145166368) ## Neighboring counties [Crawford](https://radonroster.com/pa/county/crawford/) (3 firms) · [Elk](https://radonroster.com/pa/county/elk/) (1 firms) · [Erie](https://radonroster.com/pa/county/erie/) (6 firms) · [Forest](https://radonroster.com/pa/county/forest/) (0 firms) · [McKean](https://radonroster.com/pa/county/mckean/) (0 firms) · [Venango](https://radonroster.com/pa/county/venango/) (2 firms). Firms often serve across county lines. Adjacency from U.S. Census Bureau county adjacency file. ## Hiring a radon pro in Warren County: quick guide With 47% of 3,863 basement tests at or above 4 pCi/L (above the 37% statewide share), Warren 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)). ## Frequently asked questions **How many certified radon mitigation firms are in Warren County?** 1 DEP-certified firms offering mitigation and 1 certified radon firms in total list a business address in Warren County (PA DEP lists dated 10/01/2026). Firms from neighboring counties may also serve the area. **What share of Warren County radon tests are high?** 47% of 3,863 basement tests in PA DEP's records were at or above EPA's 4 pCi/L action level, with a median of 3.7 pCi/L. **How much does radon mitigation cost in Warren 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 Warren mitigators[Request quotes](https://radonroster.com/get-quotes/?county=warren) Our advice ## Before you hire in Warren 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 Warren. [Request quotes](https://radonroster.com/get-quotes/?county=warren)