Deciding whether your household water requires radon treatment this week means understanding local conditions and your water use.
The Role of Plumbing Material and Age Is Separate From Radon Levels in Source Water
Some believe that old pipes or certain plumbing materials cause radon in water. However, radon-222 is a naturally occurring radioactive gas that originates in groundwater from geologic formations. The plumbing itself neither generates nor increases radon concentrations. Plumbing can influence how radon escapes into household air, but it does not affect source water levels measured in wells. Understanding this distinction helps focus testing and mitigation efforts on source water quality rather than plumbing condition.
Seasonal and Multi-Year Variation in Hillsborough County Radon Levels Are Evident in USGS Records
Government sampling carried out by the U.S. Geological Survey in Hillsborough County aquifer 120FLRD from January 2010 through November 2012 shows radon-222 results ranged from 42.0 to 4,900.0 picocuries per liter (pCi/L) across 26 samples from 20 wells. This multi-year dataset captures some natural variation but does not imply seasonal patterns for any individual well. Variation in radon concentrations can occur over time due to hydrologic factors and well depth, so homeowners should consider periodic testing to track their own water’s radon level.
The Measured Radon Range in Wells Is Below Federal Thresholds but Does Not Indicate Household Risk Without Specific Testing
While radon was detected in every sampled well, none of the results surpassed any federal safety threshold. This federal threshold addresses health risk from radon in water but is not a measure of household exposure or safety by itself. Detection of radon does not indicate a violation of water quality standards. To assess your household’s water radon level, testing of your own well or water source is necessary because regional data cannot specify individual conditions.
Judging Treatment Capacity Requires Knowing Your Household’s Daily Water Demand
Once radon presence and concentration are established through testing, determining the right treatment capacity depends on your household water usage. Radon removal devices, such as the Pentair Radon in Water Filter, are sized based on daily flow rates and radon levels to ensure effective reduction. Understanding your daily water demand enables choosing a system that matches use without excess or insufficiency.
Sample Depth and Well Depth Affect Expected Radon Levels in Hillsborough County Aquifer 120FLRD
The USGS samples came from wells ranging between 29 and 299 feet deep. Deeper wells may encounter different geologic layers with varying radon potential, influencing measured concentrations. Likewise, shallow wells may have lower or higher radon depending on local conditions. This depth variability means radon levels found in regional data provide a range of possibilities rather than exact expectations for any single well.
For households in Hillsborough County determining radon treatment needs, the Pentair Radon in Water Filter ships ready to configure and addresses radon reduction based on your tested water radon level and daily water use. Testing your own water source and knowing usage is essential before selecting the appropriate radon treatment solution.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2012-11-07. 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 120FLRD aquifer (Hillsborough County): 26 results from 20 wells, median 890.0 pCi/L, range 42.0-4900.0 pCi/L; none above any federal threshold
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