Top 10 Best Percolation testing pros in Sunland, CA

Q: What pollutants are commonly tested for?

• <div><p>Mold, VOCs, radon, carbon monoxide, and particulate matter are typically measured.</p></div>

Q: Does knob and tube wiring have asbestos?

• <div><p>Knob and tube wiring is an older type of electrical wiring that's no longer used and <a href="https://www.angi.com/articles/knob-and-tube-electrical-wiring-safe.htm">generally not considered safe</a>. However, some homes still have it, or may have a knob and tube wiring system that was incorrectly modified or rigged to work with a modern electrical system. Knob and tube wiring may contain asbestos insulation, but the only way to know is to have the material professionally tested.</p></div>

Q: When was asbestos banned from pipe insulation?

• <div><p>The Environmental Protection Agency (EPA) banned the use of asbestos pipe insulation in certain applications in 1975. It released further bans in 1989 and 2019. While asbestos pipe insulation was common from the 1930s to 1970s, its use fell off after the 1970s due to public concern and the EPA's actions.</p></div>

Q: How is asbestos testing conducted?

• <div><p>Asbestos testing is conducted by collecting samples from materials suspected to contain asbestos and analyzing them in laboratories for confirmed presence.</p></div>

Q: How do I locate where the smell is coming from?

• <div><p>While a professional can always help, there are some common plumbing culprits you can check yourself to see if you can find the sewer gas smell. For example, you should check your water traps, sometimes called P-traps and S-traps, which are located under sink, shower, and laundry drains. The wax ring beneath the base of your toilet, which creates a watertight seal with the plumbing, could also have gone bad.</p></div>

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Sunland homeowners rate percolation testing pros in our network

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(867 reviews)

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Verified Reviews for Percolation Testing pros in Sunland, CA

*The Angi rating for Percolation Testing companies in Sunland, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Percolation Testing needs.

*The HomeAdvisor rating for Percolation Testing companies in Sunland, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Percolation Testing needs.

Last update on September 03, 2025

Reviewed in September 2025
I had a great experience with John Mold Test Providers. They were very nice, professional, and easy to work with from start to finish. They explained everything clearly, answered all my questions, and made the whole process stress-free. I really appreciated their professionalism and how...
John Mold Testing, Inc.
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Reviewed in August 2024
Kayla was very helpful and professional throughout the enitre process. Mold related issues can be stressful but Kayla made the whole experience positive. She was very thorough in explaining the testing process and the results. Not only was she knowledgeable, but she was very kind and went above...
911 Certified Mold Testing LLC
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Reviewed in May 2021
I hired Geoffrey to test if there was asbestos in my home. He was quick, professional, and very fairly priced. I got my results earlier than expected and would recommend him to anyone.
Mereson Environmental Services
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Reviewed in May 2020
We are an environmental testing company and have referred and tested behind Mold Solutionz. They pass our clearances and do good quality work. I recommend them.
Mold Solutionz 24/7
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Reviewed in March 2019
Tomas was very prompt and professional. He first came to my place and provided an estimate. I shopped around and ended up getting in touch with him. He showed up on time and performed the job efficiently. Before leaving, he tested everything and ensured there were no leaks and that everything...
Tomas Solorio, Jr.
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Reviewed in March 2018
The Kibuk team had a few challenges with my bathroom tile job -- installing warm wire, preparing the shower for the no-leak test, installing extra large tiles in the shower surround, and some uncertainty on my part in re: design details. They offered expert advice in how to treat the edges, and...
Kibuk Construction, LLC
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Reviewed in February 2018
I hired First Source Restoration for a mold test. They were fast, gave great discounts and were very helpful answering all questions patiently.
First Source Restoration, Inc.
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Reviewed in August 2017
Friendly, showed up on time, and did the work well. It was an old tub drain pipe that had a hole in it under the house. They replaced the pipes at the intersection and tested it afterwards. I inspected the work and it was done well.
H2O Plumbing
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Reviewed in July 2015
He ran test before he started the job and gave you an estimate first very anust and fast and very clean just a little on the high side but so far all good
Antex Electric, Inc.
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Reviewed in June 2015
He was thorough; but there may be a slow leak in the lines inside the walls. We didn't want to run a full test at that point; as it took 5 years for the coolant to leak out. We'll test again in 6 months. <br />
All Four Seasons AC & Heating
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Percolation Tests questions, answered by experts

Mold, VOCs, radon, carbon monoxide, and particulate matter are typically measured.

Knob and tube wiring is an older type of electrical wiring that's no longer used and generally not considered safe. However, some homes still have it, or may have a knob and tube wiring system that was incorrectly modified or rigged to work with a modern electrical system. Knob and tube wiring may contain asbestos insulation, but the only way to know is to have the material professionally tested.

The Environmental Protection Agency (EPA) banned the use of asbestos pipe insulation in certain applications in 1975. It released further bans in 1989 and 2019. While asbestos pipe insulation was common from the 1930s to 1970s, its use fell off after the 1970s due to public concern and the EPA's actions.

Asbestos testing is conducted by collecting samples from materials suspected to contain asbestos and analyzing them in laboratories for confirmed presence.

While a professional can always help, there are some common plumbing culprits you can check yourself to see if you can find the sewer gas smell. For example, you should check your water traps, sometimes called P-traps and S-traps, which are located under sink, shower, and laundry drains. The wax ring beneath the base of your toilet, which creates a watertight seal with the plumbing, could also have gone bad.

The Sunland, CA homeowners’ guide to percolation testing services

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

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