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Verified Reviews for Radon Detection And Reduction pros in Shasta Lake, CA

*The Angi rating for Radon Detection And Reduction companies in Shasta Lake, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Shasta Lake, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on December 11, 2025

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Avatar for Turtle Clan Global

Turtle Clan Global

No reviews yet

Turtle Clan Global

No reviews yet
24 years of experience

Turtle Clan has been in business since 2001, and is the premier environmental testing and consulting firm in the New York and Connecticut area. Turtle Clan was the first company to offer unbiased 3rd party testing services ONLY, so there wouldn't be any conflicts of interest. The Turtle Clan team brings over 200 years combined intellectual capital to our clients needing the assurance of competent experts who follow the ACGIH, IAQA, ACAC, The Clean Trust, OSHA, EPA, and AIHA recommendations for the assessment of indoor and outdoor environments for toxic and hazardous contamination. Our experience enables us to deliver knowledgeable and price sensitive solutions for many diverse environmental conditions. We are equipped to serve: Federal, State and Municipal governments, Educational Institutions, Realtors, Attorneys, Consulting Engineering Firms, Health Care Facilities, Hotels, Property Managers, Homeowners, and the Insurance Industry.

Turtle Clan has been in business since 2001, and is the premier environmental testing and consulting firm in the New York and Connecticut area. Turtle Clan was the first company to offer unbiased 3rd party testing services ONLY, so there wouldn't be any conflicts of interest. The Turtle Clan team brings over 200 years combined intellectual capital to our clients needing the assurance of competent experts who follow the ACGIH, IAQA, ACAC, The Clean Trust, OSHA, EPA, and AIHA recommendations for the assessment of indoor and outdoor environments for toxic and hazardous contamination. Our experience enables us to deliver knowledgeable and price sensitive solutions for many diverse environmental conditions. We are equipped to serve: Federal, State and Municipal governments, Educational Institutions, Realtors, Attorneys, Consulting Engineering Firms, Health Care Facilities, Hotels, Property Managers, Homeowners, and the Insurance Industry.

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Radon Detection and Reduction questions, answered by experts

Costs for radon detection services typically range from $150 to $250, depending on the testing method and whether a professional assessment is required.

In most states, radon testing companies don’t need to be licensed or certified by the state, but the companies that analyze the test results and develop radon mitigation protocols do. You should choose a radon testing company that suits your needs, but before hiring a mitigation specialist, check our state licensing tool to make sure the company is properly certified.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

The only way to determine if you have a radon problem in your home is to have professional testing done. You can buy DIY radon test kits, but these are sometimes inaccurate in certain temperatures and humidity levels, and they don’t paint the entire picture in terms of your radon exposure. Scheduling testing once every two to five years is best. You can also look out for the following symptoms, which, according to the American Cancer Society, are symptoms of radon exposure:

  • Shortness of breath

  • Cough

  • Tightness in the chest

  • Difficulty swallowing

  • Hoarseness

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

The Shasta Lake, CA homeowners’ guide to radon detection and reduction services

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