Company lists · Data refreshed November 2026

Top 25 Radon testing laboratories based in the United States

RevenueBase identified 248 company matches for radon testing laboratories associated with the United States as of November 2026 and tracks 998 professional contacts across them, including 250 with verified work emails. Denver is the largest hub.

This list covers company matches for radon testing laboratories associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
248Companies
998Contacts tracked
250Verified emails
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The 25 largest radon testing laboratories based in the United States

Ranked by team size
Top 25 of 248 company matches for radon testing laboratories based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMilwaukee, WI, United StatesHQ recorded Nov 6, 202651-200100 contacts →

Exact match

“SWAT Environmental is the largest, most experienced radon mitigation services company in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWard Hill, MA, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Spruce was founded in 1989 with the purpose of making indoor air safer by removing a major health hazard: Radon.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“Axium, Inc.| Axium Inspections is Colorado's the largest and most referred Colorado home inspection company with over 5-Star Reviews.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchTowson, MD, United StatesHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Independent testing, inspections, lab analysis and consulting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 20261-1019 contacts →

Exact match

“Ecosense is a Silicon Valley based company providing and supporting a family of high accuracy, real-time radon detectors for professional home inspectors, radon mitigators, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchFlanders, NJ, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“RAdata Analytical Lab is proud to have been serving our New Jersey communities since 1984!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMedway, MA, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCoon Rapids, MN, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Home Inspection Team Radon Sewer 🦠 Mold Chimney Water Assessments Much more!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWard Hill, MA, United StatesHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“RadonAway is dedicated to delivering high-quality products, tools, and services designed to detect and mitigate radon and other harmful soil gases.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWeston, FL, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“PRO-LAB® is the world-leading business in environmental testing for over 20 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchFreeport, ME, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Air & Water Quality was established in 1989 to help homeowners resolve water and radon issues and improve their home environments and their lives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchPortland, OR, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Cascade Radon is the Northwest leader in radon testing and mitigation system design, with over 25 years of expertise in the field.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBillerica, MA, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Durridge is a leading provider of professional radon detection equipment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCanton, GA, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Our team of highly trained inspectors provide a full line of inspection services including, home inspections, commercial inspections, new construction inspections, radon testing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDraper, UT, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Utah Radon Services is the leading radon company in Utah offering free radon test and free radon mitigation bids.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDelafield, WI, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Boasting unprecedented industry experience, competitive pricing and exceptional customer care, Lifetime Radon Solutions, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMelbourne, FL, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“SunRADON strives to advance innovation of affordable, reliable, and robust indoor air quality monitors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBroomfield, CO, United StatesHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Before 1986, RDS was known as MINCO, and had provided radon testing for mines and uranium exploration during the 1960′s and 1970′s.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchKingston Springs, TN, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Radon is a naturally occurring, cancer-causing radioactive gas that you can't see, smell or taste.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLivonia, MI, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“At Trademark Inspection Services, we are committed to providing comprehensive inspection solutions for homeowners, businesses, buyers, and sellers throughout Michigan.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSterling, VA, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“NextDay Inspect® | Professional Property Inspections | DC, MD, VA, WV & PA Why Choose Us | Trusted since 2008 with over inspections completed, delivering excellence through…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchOmaha, NE, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“National Radon Defense is North America's leading radon testing and mitigation service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Alpine Building Performance was born from the belief that health, comfort and energy efficiency should not be a luxury, but a standard.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchFranklin, TN, United StatesHQ recorded Nov 6, 20261-107 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLa Vergne, TN, United StatesHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Premier Home Inspection, LLC provides professional home inspections and environmental testing services to Middle Tennessee residents.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 248 radon testing laboratories based in the United States

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Radon testing laboratories based in the United States at a glance

As of Nov 6, 2026
25.1%Verified-email coverage
4.0Average contacts per company
1-10Median size (employees)
2.8%Largest-city concentration · Denver
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
181
11-50
58
51-200
9

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 248 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “radon testing laboratories” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 250 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “radon testing laboratories”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many radon testing laboratories are there based in the United States?

RevenueBase identified 248 company matches for radon testing laboratories associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Swat Environmental tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most radon testing laboratories?

Denver leads with 7 company records, followed by Colorado Springs (4) and Kansas City (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 250 professional contacts with verified work emails tracked across these 248 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 248 radon testing laboratories based in the United States. Start with a free account, no credit card.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.