General Manager, New Jersey Operations · Radon, Well Water & Mold · New Jersey, Eastern Pennsylvania & Southern New York
John Cowell is General Manager of Protect Environmental’s New Jersey operation, working under the RAdata brand in Flanders, NJ. He leads the team that provides radon testing and mitigation, well water testing and treatment, and mold inspection and remediation across New Jersey and parts of eastern Pennsylvania and southern New York. John holds NJDEP radon license #10538, NRPP certification #112140 and Pennsylvania radon certification #3725.
John Cowell is the General Manager of Protect Environmental’s New Jersey operation, which serve homeowners under the RAdata brand. Founded in 1984, RAdata was the first licensed radon business in New Jersey. John joined RAdata in 1992 and has been part of the team for more than three decades.
Over his career, John has built deep expertise in radon measurement and mitigation, private well testing and water treatment. He is licensed by the New Jersey Department of Environmental Protection (NJDEP) for radon mitigation and measurement, certified through the National Radon Proficiency Program (NRPP) and certified for radon work in Pennsylvania. That combination lets his team handle testing, system design, installation and follow-up service under one roof, delivering the quality customers count on. The New Jersey team now provides mold inspection and remediation as well.
Today, John oversees RAdata’s radon, water and mold services, including its testing, mitigation, treatment and service departments, along with its on-site radon and drinking water laboratories in Flanders. His team serves homeowners, home buyers and sellers, real estate professionals, home inspectors and property managers throughout New Jersey and nearby communities in Pennsylvania and New York.
John believes every project should deliver three things: accurate results, a system installed the right way, and peace of mind for the customer. His team handles every step in-house, from the first test to the lab report to the installed system and its service. His areas of focus include:
Radon is a naturally occurring radioactive gas that has no color or odor, so testing is the only way to know a home’s level. Much of northern and western New Jersey sits on geology known for elevated radon, but homes of any age anywhere in the state can be affected. Many of the same homes rely on private wells, which New Jersey requires to be tested before most home sales. Mold is the third concern: basements, crawlspaces and areas with past water problems can support growth that affects indoor air quality. John’s mission is to give New Jersey families clear answers on all three, and lasting results when treatment is needed.
John and the New Jersey team, operating as RAdata, work with homeowners and partners throughout the state:
Whether a buyer needs radon and well water results before closing, a family wants safer air and water at home, or a damp basement needs mold remediation, John’s team brings licensed expertise, in-house lab support and RAdata’s more than 40 years in business to every job.
In New Jersey, radon tests and PWTA well water tests are a routine part of buying and selling a home, and deadlines are tight. John’s team typically schedules tests within 3 to 5 business days. Radon test kits received at the Flanders lab before noon on a weekday are analyzed and reported the same day. When results call for treatment, the same team designs and installs the system so the closing stays on track.
RAdata’s water lab analyzes each sample before a system is recommended, so treatment is sized to what is actually in the water. All water treatment is installed by RAdata Water Treatment LLC under master plumber Drew Lovasi (NJ Plumbing Lic. #12830), part of John’s New Jersey team.
John’s team inspects for visible mold, hidden moisture and the conditions that let mold grow. Remediation removes affected materials and corrects the moisture source so growth does not return. Mold work is backed by RAdata’s Certified Mold Remediator credential and Protect Environmental’s national indoor air quality resources.
John holds state radon licenses in New Jersey and Pennsylvania, plus national certification through the National Radon Proficiency Program. These credentials mean every radon test and mitigation system his team delivers meets state standards across the areas RAdata serves.
NJDEP Radon Mitigation Specialist / Measurement Technician (MIS/MET) | #10538 |
National Radon Proficiency Program (NRPP), RMT | #112140 |
Pennsylvania DEP Radon Certification | #3725 |
Leads the Flanders-based RAdata team serving New Jersey, eastern Pennsylvania and southern New York for radon testing and mitigation, well water testing and treatment, and mold inspection and remediation. Oversees field teams, the on-site radon and drinking water laboratories, project quality and the customer experience.
Started as a field technician and worked his way up to supervisor of installations and service and estimator. Managed a staff of 15, overseeing scheduling, inventory and material orders.
NJDEP Radon Mitigation Specialist / Measurement Technician #10538 · NRPP RMT #112140 · Pennsylvania DEP Radon Certification #3725.
John and the Protect Environmental New Jersey team, operating as RAdata, serve homeowners and businesses throughout New Jersey, with coverage extending into nearby communities in eastern Pennsylvania and southern New York:
📍 Local office: 27 Ironia Road, Unit 2, Flanders, NJ 07836. Protect Environmental New Jersey (RAdata) · Full town list on RAdata.com
Yes. Large parts of northern and western New Jersey have high radon potential, and elevated levels are found in homes across the state. NJDEP certifies radon testing and mitigation professionals to make sure results are accurate and systems work. Testing is the only way to know the level in a specific home.
New Jersey requires anyone who tests for or reduces radon to be certified by NJDEP. A certified mitigation specialist designs and oversees radon reduction systems that meet state standards. John holds NJDEP license #10538, and RAdata holds NJDEP radon measurement and mitigation business license #90001.
The PWTA requires a standard set of water tests on private wells for most New Jersey home sales. RAdata’s technicians collect PWTA samples and its certified lab in Flanders analyzes them, so results come back quickly for closings.
Consider an inspection if you see or smell mold, have had a leak or flood, or notice ongoing dampness in a basement or crawlspace. John’s team finds the moisture source as well as the growth, so remediation fixes the cause and not only the symptoms.
Yes. John’s New Jersey team tests, treats and services all three, with in-house labs for radon and water. That means one point of contact for homeowners and one vendor to coordinate with on real estate deadlines.
National leader in radon mitigation, vapor intrusion, and indoor air quality. Led by General Manager John Cowell, the New Jersey team operates as RAdata from Flanders, NJ, providing radon, water, and mold services across New Jersey and parts of Pennsylvania and New York.
New Jersey Local OfficeWhether you’re buying a home in Morristown, on a private well in Sussex County, drying out a basement in Bergen County, or managing a commercial building anywhere in the state, John and the Protect Environmental New Jersey team bring more than 30 years of RAdata experience and certified in-house labs to every project.
Schedule a radon test, request well water testing or treatment, book a mold inspection, or request a quote for a mitigation system.
All Water Treatment performed by RAdata Water Treatment LLC: D. Lovasi, 27 Ironia Road, Unit 2, Flanders, NJ 07836, Plumbing Lic. # 12830
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