What a Certified Laboratory Test for Radon in Water Reports
Test results list radon concentration in picocuries per liter (pCi/L)
A laboratory test for radon in water will specify the concentration of radon-222 in picocuries per liter. This figure expresses the radioactivity level measured in the water sample but is specific only to the tested sample and does not imply the same level throughout a water supply or in other wells.
Results come with detection limits and sample depth information
Tests often note the detection limit—the lowest concentration that can be measured reliably—and the depth from which the water sample was drawn, which helps in interpreting the context of the radon levels reported.
What 'Detected', 'Median', and 'Range' Mean in the Sampling Record on This Page
'Detected' indicates radon was measurable in all sampled wells in Palm Beach County
Data from USGS groundwater sampling in Palm Beach County's aquifer 120UFAQ shows radon was detected in all three wells tested, meaning the instruments registered radon presence at measurable levels.
'Median' is the middle value of measured concentrations from sampled wells
The median radon concentration recorded was 290 pCi/L, representing the central value among the three readings taken between April 22 and April 23, 2015.
'Range' shows the spread between lowest and highest detected levels
The radon concentration ranged from 212 pCi/L to 310 pCi/L across the samples. This range reflects variation across different well locations and depths but is not indicative of any single household's water.
What the Measured Range Means Against the Relevant Federal Standard, and What It Does Not Mean
No result exceeded the federally established radon action level
Although radon was detected in all samples, none of the recorded concentrations exceeded the federal recommended action level for radon in water, confirming these levels fall within regulatory guidelines.
Detection is not equivalent to a health or safety violation
Detection means radon was measurable but does not imply that any level found constitutes a violation or immediate safety concern. Radon is naturally occurring and found in varying amounts in many groundwater sources.
This data does not determine radon levels in your specific household water
Because the data reflects regional sampling from deep wells, your own water quality can differ significantly. Only a certified laboratory test of your household water will provide your radon level.
What to Write Down Before Asking Anyone for Treatment Advice
Obtain your household water radon test report with concentration results
Having your laboratory test data allows precise evaluation of your water’s radon level and supports tailored treatment decisions.
Note your household water usage to consider treatment system capacity
Understanding your average daily water use helps in selecting the appropriate treatment technology class.
Record whether your water supply is from a private well or municipal source
This distinction influences treatment options and testing frequency considerations.
The Household or Facility Symptoms That Do and Do Not Point to This Problem
Radon in water commonly has no immediate sensory signs
Unlike some water issues, radon does not cause taste, odor, or staining problems. No visual or olfactory symptoms reliably indicate its presence.
Symptoms such as increased cancer risk are long-term and require epidemiological evidence
Health impacts of radon exposure from water accrue over time and cannot be diagnosed by immediate household symptoms.
Other water problems causing taste or odor should be tested separately
If you notice unpleasant tastes or odors, testing for other water quality factors is recommended, as these are not related to radon presence.
Understanding radon test reports from your region offers a foundation for choosing the correct water treatment. Household-specific testing and usage information clarify the need and scale of treatment. The C-Series Radon in Water Filter ships ready to configure and is designed to address radon in water effectively once testing confirms the need.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2015-04-23. 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 120UFAQ aquifer (Palm Beach County): 3 results from 3 wells, median 290.0 pCi/L, range 212.0-310.0 pCi/L; none above any federal threshold