RTK Environmental

What They Do

MoldMold TestingAsbestosLead Paint

• Lead Testing
• Water Testing

In Their Own Words

An environmental issue in your home or business — like mold, lead, asbestos, poor indoor air quality, contaminated water, or another hazard — can cause health issues, stress, and disruption. For 30 years, RTK Environmental Group has provided environmental testing services to more than 40,000 commercial and residential customers. We are a trusted leader in unbiased testing of mold, lead, asbestos, indoor air quality and VOCs, water, soil, and radon. Serving southern New York, Connecticut, and northern New Jersey, our professional inspectors are fully certified, licensed, and insured. Because RTK conducts tests and does not remediate, customers are assured there is no conflict of interest.

Written by the business on its public profile. We have not verified these claims.

Before You Call RTK Environmental

1. Where do you think the moisture is coming from, and who fixes it?
2. Will you set up containment and negative air, and how will you protect the rest of the home?
3. Do you also do remediation? If so, who checks your work?
4. How many air samples will you take, and will you take an outdoor control sample?
5. Is your company licensed for asbestos abatement here?

For mold jobs over 10 square feet, New York State requires a licensed mold assessor and a separate licensed remediation contractor. Ask for both license numbers.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
• Call a proMold Testing, When It Is Worth It and How to Read a Lab ReportWhen a mold test is worth paying for, which kind to ask for, why store kits mislead, and how to read spore counts, outdoor controls and a lab report yourself.
• Call a proAsbestos in Older Homes, Where It Hides and What Not to TouchWhere asbestos hides in older homes, why intact material is often safest left alone, how lab testing works, and what never to sand, scrape, drill or break.
• DIY with careLead Paint in Homes Built Before 1978What lead paint means in a home built before 1978. Who is most at risk, how to test, what the EPA RRP rule requires, and which practices are banned.