If your water is sourced from a well in Bertie County, what does the local radon range imply for your household water safety?
U.S. Geological Survey data from 2013 sampled three wells in Bertie County's 211CPFRU aquifer and found radon-222 concentrations ranging from 120.0 to 246.0 pCi/L, with a median of 175.0 pCi/L. These results are from wells between 222 and 409 feet deep. Importantly, none of these measurements exceeded any federal action level. This means that while radon was detected in all samples, the data do not indicate a violation or unsafe condition by federal standards.
If your well depth or water source differs from the sampled wells, how might radon levels vary?
Radon concentrations in groundwater can fluctuate based on well depth and geological factors. The USGS samples referenced were from moderately deep wells, so shallower or deeper wells in the area could have different radon levels. Well construction and the specific aquifer characteristics where your water originates also influence radon presence. Testing your own water is necessary to accurately determine your household’s radon concentration regardless of these area statistics.
If government records state 'detected', 'median', and 'range' for radon, what do these terms mean for your understanding?
- Detected: Radon was measured above the instrument's reporting limit in all sampled wells.
- Median: The middle value of the three samples, representing a typical measurement in the sampled range.
- Range: The span from the lowest to highest radon levels detected in the samples.
These figures describe the distribution of radon levels observed in this small set of wells but do not specify your well’s actual radon content. Only a private water test can provide your home's radon measurement.
If your water comes from a public or community system rather than a private well, how does the radon record differ?
Public water systems undergo regular monitoring and must meet EPA standards. The USGS sample data pertains specifically to groundwater wells in this aquifer, not public system water records. For public water users, local or state water quality reports will provide radon and other constituent information relevant to your tap water. Private well owners should consider independent testing because government sampling does not assess private well water quality individually.
If your household size is large or you have a seasonal or second home in Bertie County, what considerations apply?
Radon treatment needs may change with household water demand patterns. Larger households or properties with irregular use can affect how treatment capacity and efficiency align with water consumption. Documented radon reduction technology, such as the C-Series Radon in Water Filter, is designed to manage radon exposure from water when configured appropriately for your household size and usage pattern.
If you decide to seek treatment advice, what information should you prepare?
- Results from a recent radon in water test specific to your household well or source
- Well depth and construction details
- Daily household water usage estimates
- Whether the water source is private or from a public system
- Any historical water quality reports for your property
Having these details ready will help ensure that any evaluation of radon treatment options is well suited to your home's actual conditions.
This page summarizes U.S. Geological Survey groundwater sampling for radon-222 in the 211CPFRU aquifer of Bertie County, NC, from three wells sampled in 2013. For more information, visit the original data source at the U.S. Geological Survey water data website.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2013-09-25. 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 211CPFRU aquifer (Bertie County): 3 results from 3 wells, median 175.0 pCi/L, range 120.0-246.0 pCi/L; none above any federal threshold