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TRUSTED BY PIEDMONT, CA HOMEOWNERS

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Verified Reviews for Percolation Testing pros in Piedmont, CA

*The Angi rating for Percolation Testing companies in Piedmont, 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 Piedmont, 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 April 20, 2026

Reviewed in April 2026
Efficient, communicative, knowledgeable and fixed the problem. Would definitely use Albert Nahman by plumbing again and recommend them to friends
Albert Nahman Plumbing, Heating and Cooling
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Reviewed in November 2021
Their work is outstanding! They showed up on time, however, just in case of slight lateness in arrival, they would reach me by text. Which is something I would really appreciate. There Very professional. I will call on them again in the future. As for anyone needing reliable and professional...
Supreme Plumbing and Heating, Inc.
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Reviewed in January 2020
Great service--Dan thoroughly inspected the house for signs of mold, tested the air in carefully chosen spots, and even rigged a way to test the inside of a sealed box containing books that we were suspicious of, all after patiently listening to our history to determine where he should test. The...
Mold Spotters
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Reviewed in June 2019
A1 Certified was professional and courteous for starters. They were on time, and shared valuable information about mold/mold abatement. Testing results were needed prior to the time frame and the gentleman that did our testing, called the lab and rushed the results.
A1 Certified Environmental
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Reviewed in June 2017
The test was simple and I was impressed with how quickly I received the results. Would recommend.
Tap Score, Powered by SimpleWater
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Reviewed in December 2015
A Call to the office on 12/28 was initially thought to be for an estimate. The scheduler gave us a 12:00-2:00 window. When 1:30 came and we hadn't heard from them, a quick call back to the company resulted in assurances they were headed our way. They arrived within the next 15 minutes, with...
Superior Plumbing & Drain Cleaning Services
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Reviewed in July 2015
My regular plumber wasn't available so I called Toto's a half hour before they opened to schedule a sewer line cleanout. Expected to leave a message to get someone out later in the day but Raul promptly answered and said he'd send someone right out! Wow! Another Raul (not the owner) and Israel...
Toto's Plumbing
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Reviewed in March 2015
He took 2 mold samples to be tested in a PROFESSIONAL manner.
Curtis Roberts Mold Inspection
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Reviewed in June 2014
They were thorough and professional. Unfortunately, they were not able to take infared photos of the house as they often do to show the range in temperatures but had another way to complete the testing. I have hired them to do the suggested upgrades and will write a review on that portion of the...
Advanced Home Energy
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Reviewed in December 2013
Clean and test the system. These folks are A1!
Atlas Heating & Air Conditioning Co
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Percolation Tests questions, answered by experts

Costs depend on test type, home size, number of testing locations, and whether follow-up testing is required.

Often found in old insulation, tiles, and roofing materials in pre-1980s buildings.

Costs depend on property size, test types, and additional services like mold sampling.

While it's possible to cover asbestos tile with carpet, it's not recommended. Encapsulating tile beneath carpet doesn't eliminate the health risks. Over time, the asbestos tiles could degrade, releasing fibers into the air and potentially contaminating the carpet. Disturbance during carpet installation or removal might also release fibers.

Older textures may contain asbestos, requiring careful handling and professional inspection before work begins to ensure safety compliance.

The Piedmont, CA homeowners’ guide to percolation testing services

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

See all articles

Alison Kasch
•
Jul 10, 2026Jul 10, 2026
How Much Does a Perc Test Cost? [2026 Data]
Most building projects and septic installations require soil testing to ensure proper drainage. Learn how much a perc test costs and what affects costs.
Dan Simms
•
Jul 9, 2026Jul 9, 2026
How Much Does Soil Testing Cost? [2026 Data]
Find out how much a soil test costs and what you get for your money with our expert guide. Know what to budget for different types of soil tests.
Mitchell Grant
•
Jul 9, 2026Jul 9, 2026
What Is a Perc Test for Septic Systems and Why Is It Necessary?
A perc test for septic analyzes the absorption rate of the soil where a tank is going to be installed. Learn more about the test, cost, and passing grades.
Kate Fann
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Jul 9, 2026Jul 9, 2026
How to Test a Septic Drain Field’s Effectiveness
Learn how to test a septic drain field to ensure it’s functioning properly before encountering costly issues.
Dan Simms
•
Jul 9, 2026Jul 9, 2026
When Is the Best Time to Do a Perc Test?
Not sure about the best time to do a perc test? Learn about factors that affect results and test costs to choose the ideal timing for your project.
Dan Simms
•
Jul 9, 2026Jul 9, 2026
Soil Test vs. Perc Test: Which Do You Need?
Not sure what kind of testing you need for your land? Learn about the differences between a soil test vs. a perc test and when to order each of them.