Radon Air & Water Specialist · NRPP Certified Mitigation Professional · Boston Region
John Spokis is an NRPP Certified Radon Mitigation Specialist at Protect Environmental’s Boston-area team, serving Massachusetts, Rhode Island, and Connecticut. Owner of Cliff Cummings Water Services and Radon Systems LLC (founded 1985, both joined Protect Environmental in March 2025), John specializes in radon-in-air and radon-in-water mitigation with more than 20 years of experience and over 20,000 installed systems.
John Spokis is an NRPP Certified Radon Mitigation Specialist (#104954-RMS) and Radon-Resistant New Construction (RRNC) professional with more than 20 years of hands-on experience protecting families and property owners across the Greater Boston region from environmental toxins in both indoor air and private well water.
Certified by the National Radon Proficiency Program since May 30, 2007, John specializes in comprehensive radon risk reduction strategies, including air mitigation systems and radon-in-water treatment solutions. His expertise bridges residential, real estate, and regulatory environments, ensuring systems are not only effective but compliant and durable.
Since 2008, John has led environmental mitigation efforts throughout Massachusetts and surrounding states, expanding Radon Systems LLC (originally established in 1985) and later acquiring multiple radon and water companies, including Cliff Cummings Water Services, to strengthen capabilities in water quality testing and treatment. In March 2025, John and his team joined Protect Environmental, gaining access to the engineering, design, technical, and analytical laboratory resources of the largest soil gas contractor in the United States.
In New England, where private wells are common and radon-bearing geology runs deep, families can be exposed to radon through two distinct pathways: the air they breathe and the water they use every day. A home can pass an air mitigation test and still expose occupants through aerated water from showers, dishwashers, and laundry. Addressing only one source leaves the other risk unmanaged.
John is one of the few specialists in the region trained and credentialed to mitigate both. By integrating air and water solutions, he delivers a comprehensive environmental health solution rather than a partial fix.
Radon is a naturally occurring radioactive gas and a leading cause of lung cancer among non-smokers, according to the U.S. Environmental Protection Agency. Testing is the only way to determine radon levels in a home.
John’s radon air expertise includes:
His experience across Massachusetts and the surrounding states’ diverse housing stock, including historic homes, finished basements, and properties with high water tables, allows him to tailor mitigation strategies to local building characteristics and soil conditions.
In addition to radon in the air, John specializes in addressing radon in private well water, a critical but often overlooked exposure pathway in New England. Through his ownership of Cliff Cummings Water Services, John has built deep expertise in water testing, filtration, and treatment system design.
His water treatment expertise includes:
By addressing both air and water sources, John ensures clients receive a complete environmental health solution rather than a partial fix.
John holds active credentials through the National Radon Proficiency Program (NRPP), the credentialing division of AARST and the recognized authority for radon professional certification in the United States:
Through Cliff Cummings Water Services, John also holds the regulatory and licensing credentials required for water well services and water treatment installation in Massachusetts.
With decades of experience navigating municipal permitting, state regulations, and inspection requirements across Massachusetts, Rhode Island, and Connecticut, John understands how to manage projects efficiently while meeting strict compliance standards. He works closely with homeowners, real estate professionals, contractors, and local authorities to keep projects on schedule and aligned with environmental safety guidelines.
For real estate transactions, where testing and mitigation are commonly negotiated and timing is tight, John’s combined air and water capabilities allow a single team to address both concerns without coordinating multiple vendors. That speed, backed by NRPP credentials, makes him a trusted partner for closing-driven work.
Joined Protect Environmental in March 2025 along with Radon Systems LLC and Cliff Cummings Water Services, bringing comprehensive radon air and water mitigation capabilities to PE’s national platform. Continues to serve Massachusetts, Rhode Island, Connecticut, and Southern New Hampshire with the engineering, design, and laboratory resources of the largest soil gas contractor in the United States.
Led environmental mitigation efforts throughout Massachusetts and surrounding states, expanding Radon Systems LLC (originally established in 1985) into one of the most established radon mitigation firms in New England. Later acquired Cliff Cummings Water Services to extend capabilities into water quality testing and treatment, building one of the few full-service operations in the region capable of remediating both radon in air and radon in water.
Earned NRPP Certified Radon Mitigation Specialist credential (#104954-RMS) on May 30, 2007. Active certification continuously maintained since.
John provides radon and water treatment services throughout Massachusetts (including Greater Boston, MetroWest, North Shore, South Shore, and Sutton), Rhode Island, Northern Connecticut, and Southern New Hampshire.
📍 Local office: Sutton, MA. Serving the Greater Boston region and surrounding New England states.
Yes. Many counties across Massachusetts, Rhode Island, Connecticut, and New Hampshire have moderate to high radon potential due to the region’s geology. New England’s high prevalence of private wells also creates a secondary exposure pathway through radon in water. Testing both air and water is the only way to know your property’s complete radon risk.
Radon in water occurs when groundwater passes through radon-bearing rock and dissolves the gas, which is then released into the home through showers, dishwashers, and laundry. While radon in air is mitigated using soil depressurization systems, radon in water requires aeration treatment systems or activated carbon filtration. Private well owners in New England are particularly at risk and should test both pathways.
Addressing only one pathway leaves the other risk unmanaged. A home can pass an air mitigation test while still exposing occupants through aerated water during everyday use. John’s team is one of the few in the region credentialed and equipped to design integrated air and water mitigation strategies, ensuring complete risk reduction.
National leader in radon mitigation, vapor intrusion, and indoor air quality. The Boston region team operates from Sutton, MA, serving Massachusetts, Rhode Island, Connecticut, and Southern New Hampshire.
Find Local OfficeIf you’re a Boston homeowner with a private well or live in an area with known radon-bearing geology, you may be exposed through both air and water without knowing it. John and the Protect Environmental Boston team are uniquely equipped to test for and mitigate both pathways with one project, one team, and one verification process.
Schedule a radon air or water test, request a mitigation system installation, or request a quote for whole-house water treatment integrated with radon mitigation. John’s team handles permitting, scheduling, and post-installation verification across MA, RI, CT, and Southern NH.
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