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*The Angi rating for Lead Testing And Removal companies in Ontario, WI 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 August 21, 2026

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Avatar for Red Diamond Mold Remediation and Lead Abatement, LLC
Red Diamond Mold Remediation and Lead Abatement, LLC
4.6(
70
)
Toxic Lead - Abatement

Serving Ontario, WI and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"As soon as we sent out the need for testing, they had called right away on a Sunday, and the owner was able to book an appointment for the next day for testing! He tested every floor, and expedited the testing for us to ensure we knew the results right away. We are really grateful for how quick this process was and how accommodating their team is. Also, the price is very reasonable! 10/10 would book through Red Diamond Mold again!"
Response time4 hrs
Response rate100%
20 neighbors recently requested a quote
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Lead Testing and Removal questions, answered by experts

Determining if your water main contains lead involves a few steps. First, check the age of your property, as homes built before the 1980s might have lead pipes. Contact your water utility company for information on your service line material. Then, you can hire a professional plumber to conduct an inspection or use a lead testing kit to analyze water from the main line.

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.

While not all homes built before 1978 contain lead paint, enough do, so you’ll still want to test to be on the safe side. The federal government banned lead-based paint for homes in 1978, but your state may have banned lead before that time. Around 24% of homes built between 1960 and 1977 contained lead-based paint, while 87% of homes built before 1940 contained lead-based paint.

Lead toxicity comes from inhaling lead or consuming it. Before the 1980s, when the government banned lead from consumer use, it could be found in paint, plumbing, pipes, ceramics, and even gasoline. Lead paint is toxic for the same reason lead itself is toxic, which is why lead poisoning from paint presents the same as lead poisoning from water or food sources, with a slight increase in respiratory symptoms vs. digestive symptoms. Lead paint is most dangerous when it’s old and peeling, cracking, or otherwise disturbed. This increases the concentration in the air and, therefore, in breathable air. 

Lead exposure poses significant health risks, including neurological, developmental, and behavioral disorders, especially critical in young children and fetuses.

The Ontario, WI homeowners’ guide to lead testing and removal services

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

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