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1. Seasonal and Multi-Year Variation in Radon Measurements for Nassau County
Radon-222, a naturally occurring radioactive gas, was measured at various times between August 2012 and October 2016 in Nassau County’s aquifer 211MAGT. This range of dates captures data over multiple seasons and years, helping to reflect natural fluctuations in groundwater composition. The samples show radon levels detected consistently across this timeframe, suggesting a steady presence rather than a sudden spike or seasonal anomaly.
2. Interpreting 'Detected', 'Median', and 'Range' in the Sampling Data
The term 'detected' means instruments measured radon in each sample without falling below reporting thresholds. For Nassau County aquifer wells, 9 separate wells each had radon detected. The median value, 91.0 picocuries per liter (pCi/L), represents the middle concentration among these samples, with individual results ranging from 55.0 to 147.0 pCi/L. These figures describe the area's groundwater but do not specify the concentration in any particular household’s water.
3. Differences Between Public Water System Records and Private Well Testing
Public water system data reflects aggregated measurements or compliance checks for municipal supplies, which often undergo treatment and blending from multiple sources. In contrast, the Nassau County aquifer data comes from private well samples. Private well owners must test their individual water to know their exact radon levels since area data alone cannot determine specific household exposures. Treatment considerations likewise depend on confirming one’s own water quality.
4. Sample Size and Its Impact on Understanding Local Radon Levels
The data set includes 9 sample results from 9 wells, with well depths between 227 and 701 feet. While this provides a preliminary overview of radon presence in the area aquifer, the limited sample number means localized variations may exist. Homeowners should consider that actual radon concentrations in their water can differ due to geology, well depth, and construction specifics beyond what this data shows.
5. Household Water Fixtures and Processes First Affected by Radon
Radon in water is most commonly released into indoor air during water use activities like showering, cooking, or laundry. Fixtures such as showers and faucets can thus contribute to indoor radon exposure. Awareness of these points helps prioritize testing and potential water treatment for radon removal to reduce exposure inside the home.
Understanding local aquifer sampling helps frame expectations about radon in household water but cannot substitute for individual water testing. If radon is measured at levels of concern, the C-Series Radon in Water Filter ships ready to configure as a treatment solution designed to reduce radon concentrations effectively. This guide has outlined the path from regional data to household decisions about testing and treatment.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2016-10-05. 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 211MAGT aquifer (Nassau County): 9 results from 9 wells, median 91.0 pCi/L, range 55.0-147.0 pCi/L; none above any federal threshold