Kitsap County's groundwater comes from an aquifer sampled by the US Geological Survey between March and May 2021. Eighteen wells, ranging from 16 to 27 feet deep, were tested to measure Radon-222 levels. Radon was detected in all samples, with values from 45.0 to 167.0 pCi/L and a median of 77.5 pCi/L. These results offer a regional snapshot but do not reflect the specific radon level of any individual well or household water.
How to judge treatment capacity against the household's daily water demand
Estimate your daily water use volume accurately
Knowing your household’s water consumption pattern helps determine if the treatment can handle peak demand, ensuring effective radon reduction throughout daily use.
Match capacity with flow rates of taps and appliances
Calculate maximum simultaneous flow from showers, faucets, and appliances to avoid overloads that might reduce radon removal efficiency.
Consider continuous vs. intermittent water use
The treatment system's capacity should align with whether water use is steady or sporadic to maintain consistent radon mitigation.
What changes for a large household, a second home, or a seasonal property
Larger households require greater treatment capacity
More occupants mean higher water volume, so the system needs to accommodate increased radon removal without compromising performance.
Second homes may experience stagnant water conditions
Intermittent use can cause radon to accumulate in water and fixtures, necessitating checks or adjustments in treatment readiness upon return.
Seasonal properties might see variable radon levels
Water quality can shift with seasonal changes in aquifer recharge, so monitoring is beneficial for continued safety and taste.
How the documented treatment technology removes or neutralizes the constituent
The Autotrol Radon in Water Filter employs adsorption and filtration
This system reduces radon by passing water through specialized media that traps and diminishes radon concentrations before household use.
Designed for household water volumes and flow rates
Its configuration supports typical daily consumption levels to maintain effective radon reduction in residential settings.
Ships ready to configure for immediate setup
The product arrives prepared for straightforward connection to existing water lines, facilitating prompt resumption of radon treatment after equipment issues.
What happens when this problem is left untreated for years, stated without exaggeration
Accumulation of radon in household water can continue unchecked
While regional samples show radon within federal thresholds, no treatment can lead to undiminished exposure from water use activities.
Radon gas may release into indoor air during water use
Activities such as showering and dishwashing can transfer radon from water into air, increasing indoor concentrations.
Prolonged exposure to radon may warrant evaluation of alternative mitigation steps
Households relying on untreated well water or with failing treatment equipment should consider testing and updated interventions to manage radon effectively.
How seasonal or multi-year variation shows in the record (dates and ranges given)
Sampling took place from March 31 to May 26, 2021
This period in early spring provides a snapshot, but variations in radon levels can occur throughout the year.
Range of radon values: 45.0 to 167.0 pCi/L across sampled wells
The considerable range suggests radon concentration can vary significantly depending on specific well and aquifer conditions.
Repeated sampling necessary for understanding trends
Ongoing measurements help identify longer-term shifts and seasonal patterns in radon presence within the aquifer.
The order in which to rule things out, from cheapest check to laboratory test
Start with a visual inspection of water treatment equipment
Check for obvious faults or malfunction signs that might cause treatment failure before more costly steps.
Perform at-home radon water test kits as a preliminary measure
These help indicate whether radon levels in your water could be elevated, guiding the need for professional testing.
Obtain certified laboratory analysis for precise radon concentration
An accredited lab test is essential to confirm current radon levels, enabling informed decisions about treatment needs.
This water quality record covers groundwater from the Kitsap County aquifer sampled in 18 wells between 16 and 27 feet deep during 2021. All samples detected radon but were below federal thresholds. Full details can be found at the U.S. Geological Survey groundwater monitoring site.
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

