Waterborne Radon Removal in Connecticut


Connecticut Basement Systems Radon Inc (CBSR) was the first Connecticut based company to offer waterborne radon removal in Connecticut.

The two most common methods or technologies used for waterborne radon mitigation technologies are granular activated carbon (GAC) filtration and water aeration.

AI Raider system          Bubble-Up Aeration

The Process of Water Aeration

Water aeration is as old as time itself. Prime examples of aeration taking place in nature are water cascading over waterfalls or water coursing down a rocky river bed. Water aeration can also strip volatile organic compounds  (VOC) from the water. High removal efficiencies, no radioactive buildup, & better water pressure continue to make aeration the best available technology (BAT) for waterborne radon removal.

Because of the high-removal efficiencies, and no radioactive buildup and/or exposure issues, water aeration services continue to be recognized as the best available technology by the EPA for waterborne radon removal. Contact us at (800) 319-8867 for a free evaluation for installation of an aeration system.

Granular Activated Charcoal Filtration

Granular Activated Carbon (GAC) filtration removes radon and VOCs (Volatile Organic Compounds) by the process of "adsorption." This is a process where a gas or compound adheres to the surface of an adsorbent. In this case, the adsorbent is carbon.tank GAC with clear Big Blue sediment filters w Atlantic UV MP 36C UV system

Carbon is "activated" by being superheated in an oxygen-free environment. A multitude of pore space is created on each grain of carbon by this process. It is the immense network of pores in a bed of activated carbon is what gives GAC its superior filtration capabilities.

As radon-contaminated water runs through a bed of carbon, the carbon "adsorbs" the radon out of the water, onto the pore space. Caution should be exercised when choosing to use GAC filtration as a waterborne radon mitigation strategy, probably the most important aspect to consider is the range of fluctuation of the radon levels in the well under consideration for mitigation. Worst case scenario should always be considered as well as the general overall water quality. GAC can become quickly "loaded" or fouled if installed in a home with a well that has other organic compounds present in excessive amounts. If in fluent radon levels are too high, a sufficient reduction of the waterborne radon concentration may not be achieved for the duration of the service cycle.

While EPA does not regulate what system should be used at what level, the state of Connecticut currently suggests that GAC can be considered for use to mitigate levels up to 10,000 pCi/L of waterborne radon. When concentrations exceed 10,000 pCi/L, aeration is the ideal technology to use.

Contact us if you’d like more information about our waterborne radon removal process. Based in Stratford, we serve clients throughout Connecticut as well as portions of New York.