Government sampling in Clearfield County’s aquifer found radon-222 in all five wells tested, with concentrations ranging from 4.0 to 200.0 picocuries per liter (pCi/L). No measurement exceeded federal thresholds. This data reflects the aquifer generally—not your home well—and is from wells 20 to 69 feet deep. Understanding how this affects your household water requires considering how treatment and local conditions influence radon behavior.
If You Use C-Series Radon in Water Filter, What Changes at the Tap?
Once your water passes through the C-Series Radon in Water Filter, radon levels are significantly reduced before it reaches household use. This technology targets radon gas dissolved in water, lowering its presence so less can off-gas inside your home. Treated water typically has a noticeably lower radon concentration, which can reduce indoor air radon that originates from water sources.
If Your Well Depth or Water Source Differs, What Should You Expect?
The government data reflects radon concentrations from wells 20 to 69 feet deep in Clearfield County’s aquifer. If your well penetrates different layers or is deeper or shallower, radon levels can vary because radon originates from natural radioactive decay in underground rock formations. Wells tapping into different aquifers or depths might show lower or higher radon. Testing your own water directly is the only way to know your household’s specific radon concentration.
If Your Plumbing Material and Age Vary, How Does That Affect Radon?
Radon in water itself is not influenced by plumbing materials or system age since it is a dissolved gas originating from the source. However, plumbing affects how radon transitions from water to indoor air. Older or certain plumbing layouts might encourage more off-gassing into air through faucet aerators or showers. Pipe materials do not remove or add radon but can influence how much escapes as gas once water is in the home.
If You Compare the Measured Range to Federal Standards, What Does It Mean?
The median radon concentration in sampled wells was 60.0 pCi/L, ranging from 4.0 to 200.0 pCi/L. None of these results exceeded federal radon thresholds for water, which means the aquifer’s range meets current regulatory limits. This does not establish your well’s radon level, nor does detection alone signal an unsafe condition. It simply shows that radon is present at varying degrees in Clearfield County’s aquifer according to sampling.
If You Consider Secondary Standards Versus Health Limits, What Is Important?
Some water quality standards for radon address taste, staining, or corrosivity and are separate from health-based limits. In this context, federal thresholds provide clear health-related guidance for radon in water. Secondary aesthetic factors do not apply to radon concentrations. Therefore, the presence of radon in your water does not affect its color, smell, or taste and should not be confused with aesthetic water quality issues.
In summary, Clearfield County aquifer sampling found radon in all tested wells at levels within federal health-based limits. This data covers wells 20 to 69 feet deep sampled in mid-2025. Learn more about this groundwater record by visiting the U.S. Geological Survey monitoring location 411351078335001.
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