Understanding the Clearfield County Aquifer and Water Delivery
The aquifer serving Clearfield County supplies groundwater drawn from depths between 20 and 69 feet. Water from this source travels through a home's plumbing to reach taps. Five wells sampled here between July and August 2025 showed Radon-222 levels detected in all, with a median value of 60.0 pCi/L and a range from 4.0 to 200.0 pCi/L. These measurements reflect the area’s groundwater, not any single household's water supply.
Consequences of Untreated Radon in Residential Water Over Time
Potential accumulation of radon gas indoors from water use
Possible prolonged exposure through inhalation during activities like showering
Incremental increase in indoor air radon levels linked to waterborne radon
Radon's natural decay leading to radiation emission in indoor environments
Long-term exposure concerns prompting water treatment consideration
Impact of Plumbing Material and Age on Radon Presence at the Tap
Older plumbing may have different air exchange rates affecting radon release
Material porosity can influence radon retention or release into household air
Pipe layout affects how quickly water—and dissolved radon—reaches fixtures
Ventilation features connected to plumbing impact indoor radon levels
Plumbing seals and traps modulate radon entry from water to indoor air
Steps to Narrow Down Radon Concerns: From Basic to Laboratory Checks
Assessing any known radon issues in the neighborhood or local well records
Collecting a basic radon air test to establish indoor radon baseline
Reviewing plumbing condition and ventilation status for radon escape routes
Conducting a certified laboratory radon-in-water test specific to the household source
Evaluating test results to determine need and type of water treatment system
Interpreting Radon Detection Data: Median, Range, and Reporting Limits
Detected means radon measured above the instrument’s minimum detection level
Median of 60.0 pCi/L indicates half the samples were above and half below this value
Range from 4.0 to 200.0 pCi/L shows variation across different wells sampled
No results exceeded federal guidelines for radon in water in these samples
Area data do not represent specific well conditions; individual testing is essential
Additional Considerations for Non-Household Water Users in Clearfield County
Commercial operations may require more frequent or comprehensive water testing
Higher water volumes influence treatment system capacity and selection
Regulatory standards for public water systems differ from residential guidelines
Industrial uses might face additional environmental discharge considerations
Operational monitoring is important to maintain treatment effectiveness over time
To clarify your home's radon situation, order a certified radon-in-water test specific to your water source. A result below federal guidance levels would indicate that no additional treatment is necessary, while higher levels may warrant considering a water filter designed to reduce radon, such as the Pentair Radon in Water Filter, which ships ready to configure for residential needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-08-07. 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 aquifer (Clearfield County): 5 results from 5 wells, median 60.0 pCi/L, range -4.0-200.0 pCi/L; none above any federal threshold
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