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*The Angi rating for Lead Testing And Removal companies in Derry, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Lead Testing And Removal needs.

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Last update on February 20, 2026

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Avatar for Kingswood Masonry and Roofing
Kingswood Masonry and Roofing
5.0(
2
)

Serving Derry, NH and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Kingswood was very professional and quickly responded. They did a great job for a fair price. I will be using them again and would recommend their services."
Recommended by100%of homeowners
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Lead Testing and Removal questions, answered by experts

Lead testing in residential properties involves collecting samples from paint, dust, soil, or plumbing and analyzing them in certified laboratories to accurately identify lead levels.

Several different measurements may be used to determine the amount of lead in water. The most common unit of measurement is micrograms per liter (µg/L), which is the same as parts per billion. Another measurement is milligrams per liter (mg/L), which is the same as parts per million.

Some causes of brown well water—like excess tannins or dissolved iron—don’t pose a health risk. In other cases, harmful bacteria might be the culprit. If your well water has suddenly turned brown, it’s a good idea to use a home water test kit to get a better sense of what’s going on with your water. Consider calling a professional for an expert opinion before drinking the water and hoping for the best.

Lead exposure poses serious health risks, particularly for children, and can be present in paint, pipes, and soil.

Results from professional lead testing are typically available within a few days to a week (2-7 days), depending on factors like laboratory processing times and the volume of samples being analyzed. Expedited services may also be available for urgent situations.

The Derry, NH homeowners’ guide to lead testing and removal services

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