The groundwater feeding homes in Franklin County, NY, often comes from deep wells drawing water from the 400BCPX aquifer. This aquifer's water moves through rock formations before reaching taps, potentially carrying naturally occurring elements like radon. Understanding local government sampling helps clarify what radon levels could be present and guides homeowners weighing treatment options.
Myth: Area Water Records Directly Reflect Private Well Radon Levels
Many believe that USGS regional data can substitute for testing their own private well water. However, the government's sampling in Franklin County comes from specific wells drilled 242 to 305 feet deep. These data represent an area pattern, not any one household’s water. Private wells might vary substantially due to local geology and well construction.
Myth: Homeowners Should Test Random Water Characteristics Before Radon
Starting with complex or expensive water tests may be tempting, but simple steps provide more immediate insight. Check well depth, flow rate, and basic water clarity first. If these align reasonably with local conditions, follow up with a certified radon-in-water test to determine the actual household level. Radon requires specific analysis for accurate assessment.
Myth: Radon Levels Are Static Over Time Based on Historic Data
The USGS collected three radon measurements for the 400BCPX aquifer in mid to late 2010, showing a median of 17.0 pCi/L and a range from 11.0 to 2580.0 pCi/L. This wide variation highlights that radon concentration in groundwater can fluctuate seasonally or over multiple years. One-time regional data do not capture ongoing changes in any well.
Myth: Well Depth Does Not Affect Radon Concentrations
The sampled wells were between 242 and 305 feet deep, which influences radon presence. Deeper wells may encounter different radon levels than shallower ones due to varying uranium content in surrounding rocks. Understanding your well's depth is essential for interpreting potential radon risks and treatment needs.
Myth: Radon Issues and Testing Concerns Are the Same for Homes and Businesses
Commercial or industrial water users must consider larger volumes and different exposure risks, requiring additional testing parameters beyond residential radon. Household radon concerns generally focus on health and aesthetic effects from domestic water use, guiding different evaluation criteria.
Myth: The Median Area Radon Level Defines What Homeowners Should Expect
The median radon result of 17.0 pCi/L from the USGS samples provides a central reference point. Yet the range up to 2580.0 pCi/L indicates some locations can have markedly higher radon. Homeowners should not assume their water matches the median but use local data as one factor to decide on testing and treatment.
It is important not to conclude from this regional data alone that any individual well water in Franklin County has a specific radon concentration or constitutes a violation. No result from this area exceeded federal thresholds. The only way to know a home's radon level is through dedicated testing of that well.
For households considering treatment options, the C-Series Radon in Water Filter is a documented solution designed to reduce radon concentrations effectively. It ships ready to configure and complements water quality knowledge gained from testing.
In summary, USGS sampling in Franklin County’s 400BCPX aquifer provides valuable context but does not replace well-specific radon testing. Understanding government data nuances helps homeowners focus testing and treatment decisions where they matter most.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2010-10-06. 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 400BCPX aquifer (Franklin County): 3 results from 2 wells, median 17.0 pCi/L, range 11.0-2580.0 pCi/L; none above any federal threshold

