How can a Cape May County homeowner understand the radon median and range from local government sampling?
Government sampling by the U.S. Geological Survey collected eight radon-222 measurements from three separate wells in Cape May County's aquifer 121CKKD, with depths ranging from 15 to 90 feet. These results show a median radon concentration of 65.0 picocuries per liter (pCi/L) and a range of 50.0 to 88.0 pCi/L. This means that half the measurements fell near 65 pCi/L, and the lowest and highest individual results were 50.0 and 88.0 pCi/L, respectively. However, these figures do not represent the specific radon level in any one household’s water; only direct testing of that household's well water can reveal its true radon content.
What does the measured radon range tell us about compliance with federal standards and what does it not indicate?
None of the radon results from these sampled wells exceeded relevant federal thresholds for radon in water. This indicates that, based on these area samples, radon concentrations remain within federally considered limits. Importantly, detection of radon at these levels is not a violation or evidence of unsafe water. The federal guidelines aim to help reduce potential health risks from prolonged radon exposure, but detections below a standard threshold are not cause for regulatory concern. The range reported shows natural variation in radon concentrations in this aquifer, which does not necessarily imply risk for every local well or household.
What information should a homeowner note before discussing radon treatment options for their water?
Before exploring treatment methods, a homeowner should obtain a recent, laboratory-certified test of their own water source that reports radon-222 levels. Important notes include the test date, radon concentration in pCi/L, and the depth of the well sampled. Additionally, understanding household water usage can help tailor treatment advice. Having this data at hand ensures that any suggested solutions are based on the specific water conditions at the residence rather than general area sampling.
What do the terms 'detected,' 'median,' and 'range' specifically mean in the radon sampling record for Cape May County?
In the government data, 'detected' means the instrument measured radon-222 above the reporting limit in each sample; all eight results showed detected radon. 'Median' is the middle value of all results when arranged from lowest to highest—in this case, 65.0 pCi/L. 'Range' shows the spread between the lowest and highest measurements, here from 50.0 to 88.0 pCi/L. These statistics summarize the radon presence in sampled wells within the aquifer but cannot predict any individual well’s measurement. They provide context for understanding local groundwater characteristics.
How does Cape May County’s radon water record compare with neighboring areas without overinterpreting it?
Comparing radon data across counties requires caution since geology, aquifer depth, and sampling times vary. Cape May County’s radon results reflect moderate detected levels within a narrow range and did not surpass federal thresholds. Neighboring counties may have different median values or sampling depths, so differences should not be assumed to indicate better or worse water quality without detailed local data. The key takeaway is that each county’s radon profile is shaped by distinct natural conditions and sampling scope.
For households seeking to reduce radon in their water after confirming their own water’s radon levels, the C-Series Radon in Water Filter ships ready to configure and uses proven technology to address radon concentrations typical in Cape May County’s aquifer. Proper selection depends on measured radon demand aligned with household water use.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-07-02. 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 121CKKD aquifer (Cape May County): 8 results from 3 wells, median 65.0 pCi/L, range 50.0-88.0 pCi/L; none above any federal threshold