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Q: What level of radon is considered safe or dangerous?

• <div><p>No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.</p></div>

Q: How long does radon mitigation take?

• <div><p>Installation typically takes 1-2 days, depending on the system and property layout.</p></div>

Q: Can I use my sump pit for radon mitigation?

• <div><p>If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.</p></div>

Q: Can I install my own radon mitigation system?

• <div><p>A <a href="https://www.angi.com/articles/can-homeowners-install-radon-mitigation-systems.htm">homeowner can install a radon mitigation system</a> on their own. But it&rsquo;s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.</p></div>

Q: How often should radon levels be tested to ensure safety?

• <div><p>Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Castroville, CA

*The Angi rating for Radon Detection And Reduction companies in Castroville, 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 Castroville, 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 09, 2025

Reviewed in December 2025
The electricians who came by went above and beyond to diagnose issues beyond what I was looking to fix/replace. They explained their process and findings in easy-to-understand terms and completed the job on the same day.
Lecce Electric
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Reviewed in July 2025
I reached out to Monterey Vista Termite Control to get an estimate on fumigation, and though I reached out on a Saturday over a holiday weekend, Andy got back to me immediately on that same day, answered all our questions, and immediately provided us with an estimate that was lower than the...
Monterey Vista Termite Control
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Reviewed in February 2025
Trejos landscaping and gardening has completed several projects for us and provide regular maintenance. They have installed a new sprinkler system, and redesigned our side yard, installing some edging and wood chips and mulch around our rose bushes. They have transformed our front yard and we...
Trejo's Landscaping & Gardening, LLC
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Reviewed in May 2023
Exemplary Service and Impeccable Results: A Stellar Experience with Clear Water Source I recently had the pleasure of working with Clear Water Source,, for the installation of a water softener system and reverse osmosis in my home, and I am thrilled to say that my experience was nothing short...
Clear Source Water Treatment
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Reviewed in May 2023
Gil Tree Service did an excellent job removing 3 Palm Trees in one day. He showed up on time and everything was handled professionally and at a reasonable cost. Joel and crew left the site cleaned up perfectly on a windy day. I recommend his services and will hire him again in the future.
Gil Tree Service
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Reviewed in April 2023
The job had special requirements as our household has someone who is terribly allergic to most cleaning products. I had a cigarette smoke saturated room and bath that needed to be cleaned after the heavy smoker who lived there left, but we couldn't use regular cleaning products. They came...
Ernesto's Cleaning Services
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Reviewed in November 2022
Gabriel was efficient and diagnosed my problem quickly. We talked about how to approach fixing it and he was obviously experienced and professional.
GN Central Coast Plumbing, Inc.
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Reviewed in August 2022
They gave me options and executed the scope of work I wanted. They mulched the tree and removed branches from the trimmed treed. At my request the put that material in a weedy side yard. Now that yard looks and smells great. The super shaggy Palm looks many ft taller now that it's all trimmed...
La Sirenita Tree Service
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Reviewed in May 2022
AAC did a fantastic job- the best I've ever had by a window cleaner. Not just the window glass is crystal clear, but also the screens, tracks and seals are spotless. The screens look brand new. In addition to the windows, they cleaned the gutters and repaired several leaking corners. I liked...
All About Cleaning Windows and Gutters
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Reviewed in February 2022
Emil called me and set an appointment for the next day. He was on time and very professional. He explained the entire process and showed me his equipment and how it works. He delivered the results on time and answered all my questions. I was very impressed with Emil and Green Home Solutions and...
Green Home Solutions
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Find Radon detection and reduction specialists in Castroville

Standish Inspections

4.8(

)

Serving Castroville, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"They were very thorough and professional. I was very pleased with them."

Recommended by100%of homeowners

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Radon Detection and Reduction questions, answered by experts

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

Installation typically takes 1-2 days, depending on the system and property layout.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

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

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

Mitchell Grant
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Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
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Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
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How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
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•
Apr 8, 2026Apr 8, 2026
How Long Does a Radon Mitigation System Last?
How long does a radon mitigation system last? A properly installed and maintained system can last 20 years or more, but various issues can reduce the life span.
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Apr 9, 2026Apr 9, 2026
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Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.