Understanding Kitsap County Radon Levels Compared to Federal Standards
Samples show radon present but below federal action thresholds
Government groundwater sampling in the Kitsap County aquifer (18 wells, 16-27 feet deep, studied from March to May 2021) detected radon-222 in all samples, with values ranging from 45.0 to 167.0 pCi/L and a median of 77.5 pCi/L. No sample exceeded any federal threshold, meaning none of these radon concentrations reached levels that the government has set as requiring mandatory remediation.
Detection does not indicate an unsafe condition
Radon detection means that the radioactive gas was measured by laboratory instruments in these local wells. However, detection is not a violation or an indicator of unsafe water by itself. The federal guidelines define action levels that these regional figures did not surpass.
How Radon Water Concerns Vary by Household Usage
Larger households may use more water, affecting total radon exposure
In homes with many residents or high daily water use, cumulative radon exposure from water can be higher even if concentrations are similar to those recorded here. It may merit particular attention in your assessment.
Second homes or seasonal use influence radon risk differently
Properties used seasonally or occasionally may experience different radon exposure patterns because of intermittent water use and ventilation, factors to consider when deciding on monitoring or treatment.
Decoding the Sampling Terminology in Kitsap County Radon Testing
The meaning of 'detected' in water radon sampling
All tested wells in the area showed radon at levels measurable by lab equipment. Detection confirms presence but not a health violation or immediate concern.
Interpreting median and range of radon values
The median value (77.5 pCi/L) indicates the middle value in the dataset, while the range (45.0 to 167.0 pCi/L) shows the spread across samples. This spread reflects natural variability in local groundwater radon but does not imply individual well results.
Steps to Clarify Your Household's Radon Water Situation
Begin with simple observations and common water characteristics
Note any unusual odor or taste in your water, although these are not definitive indicators of radon.
Move on to targeted laboratory testing to confirm radon concentration
Since regional data do not reflect your specific well or tap, a professional water test focusing on radon is necessary to establish your household’s water radon level accurately.
Consult local health or environmental authorities for guidance on testing resources
They can direct you to qualified labs and provide advice on interpreting results.
Comparing Kitsap County Radon Data to Neighboring Areas
Variations between counties are expected due to different geology
Radon levels fluctuate by local aquifer characteristics. Do not assume your water quality matches neighboring counties’ data.
Use neighboring data to gain context, not as a substitute for your own testing
Regional trends help understand broader patterns but cannot replace well-specific measurements.
For households in Kitsap County seeking effective radon reduction, the C-Series Radon in Water Filter ships ready to configure to address radon removal demands based on tested water levels.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2021-05-26. 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 aquifer (Kitsap County): 18 results from 18 wells, median 77.5 pCi/L, range 45.0-167.0 pCi/L; none above any federal threshold