Your laboratory report for radon in your household water will list a concentration measured in picocuries per liter (pCi/L). This number reflects the amount of radon-222 gas dissolved in your water sample, a naturally occurring radioactive element found in some groundwater sources.
If you know how radon enters groundwater in Allegany County
Radon-222 in Allegany County’s aquifer 321CNMG comes from the decay of uranium in rocks and soils underground. This regional geology allows radon to dissolve into water drawn from deep wells, typically hundreds of feet below the surface. Government sampling of three wells in this aquifer found radon present in every tested well with a median concentration of 89.0 pCi/L and levels ranging from 14.0 to 300.0 pCi/L. These wells were sampled at depths between 200 and 404 feet, reflecting typical groundwater conditions for the area.
If you wonder how treated water changes once radon filtration is applied
When a household’s existing radon-removal equipment no longer keeps pace with demand, treated water can still deliver significantly lower radon concentrations at the tap. The C-Series Radon in Water Filter is designed to reduce radon levels effectively after the water leaves the well and before it reaches household fixtures. It ships ready to configure with your system to handle the household’s water usage volume, providing an added layer of protection and peace of mind.
If you want to understand why aesthetic and health-based standards for radon differ
Radon has no aesthetic secondary standard because it has no taste, odor, or color related to its presence. Instead, regulatory focus lies in health-based action levels informed by federal guidelines. The sampled radon levels in Allegany County’s aquifer were below any federal threshold for waterborne radon, which means they do not exceed regulatory safety limits. While detection indicates radon presence, it is not a violation and does not necessarily pose an immediate health risk. Understanding this distinction helps homeowners assess the urgency and type of treatment needed.
If you consider the reliability of data from three wells sampled
The government’s report is based on three samples collected from separate wells within the aquifer in summer 2015. Although this small number of samples provides a snapshot rather than a comprehensive survey, it reliably confirms that radon is consistently present in groundwater across Allegany County’s aquifer 321CNMG. However, individual well radon concentrations can vary over time and with depth, so homeowners should test their specific water to determine actual levels precisely.
If you compare Allegany County's radon data with nearby counties cautiously
While neighboring counties may show different radon levels, differences often reflect geology and sampling methods rather than a direct measure of hazard. Comparing Allegany County’s median radon concentration with nearby regions requires care to avoid overinterpreting limited data sets or attributing results to your well. Each water source’s unique characteristics mean local testing remains essential.
If your household’s radon levels have increased beyond what your existing system handles, consider the C-Series Radon in Water Filter. This solution addresses radon in residential water by matching filtration capacity to your household’s water use, providing reliable performance based on proven technology documented for residential radon reduction needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2015-08-12. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.
On record: U.S. Geological Survey sampling of Radon-222 in the 321CNMG aquifer (Allegany County): 3 results from 3 wells, median 89.0 pCi/L, range 14.0-300.0 pCi/L; none above any federal threshold