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

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Last update on January 07, 2026

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Percolation Tests questions, answered by experts

Asbestos was commonly used in cloth wiring, but not all types of cloth wiring contain it. The age, condition, and appearance of the wiring can provide clues as to whether asbestos is present or not, but the only way to know for sure if the wiring has asbestos is to have it tested.

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

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.

If asbestos is found, it is crucial to consult with a professional. They will provide recommendations for appropriate abatement actions, which may include safe removal, containment, sealing, or enclosure. All actions must be planned and executed in accordance with local regulations for handling asbestos.

The Waltham, MA 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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