Enviroquest

Mitigation and testing certifications

8 entries registered in Harrisburg, Dauphin County, dated 1 September 2026: 2 for the business and 6 for named individuals. A list that long is a rough measure of crew size, and it makes the question of who is actually on your roof a fair one to ask.

Named towns rather than a radius

Most firms describe a service area as a distance from their base. Enviroquest lists the towns, and the towns it lists are the ones this guide has pages for, including Hanover and Dover.

That is a small signal and a useful one. A firm that names the place usually knows what the housing there looks like, and York County housing varies enough between the Hanover boroughs and the river towns that the difference shows up in the job.

Both registers, with the firm number in each

Number 1725 appears in the mitigation register and in the testing register, which is the cleanest version of a dual certification: one firm number covering both activities rather than a mitigation firm with one certified tester attached.

The same caution applies as anywhere else. If Enviroquest both installs the system and runs the test that confirms it worked, ask whether an independent clearance test is available instead, and what it costs.

How that compares

Of the 21 mitigation certifications held by the eight firms in this guide, 5 belong to this one, or 24 percent. 5 of the eight hold any mitigation certification at all. It is also one of 4 firms here carrying testing certifications, with 3 of the 14 in that register.

Verify it before you book

A long list ages faster than a short one, because every individual certification renews on its own cycle. Start with the firm number 1725, then ask which certified individual is assigned to your job. The Radon Division confirms either on 800-237-2366, and our certification page explains why the distinction matters.

Common questions about Enviroquest