Pentair Radon in Water Filter

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This week, your key decision is determining which class of radon water treatment matches your household’s needs in McDowell County, West Virginia. While your well water may or may not have radon, regional data can help guide your choice.

If You Want to Compare McDowell County's Radon Record With a Nearby County Without Overreading It

The U.S. Geological Survey sampled groundwater in McDowell County’s aquifer 327PCNS, reporting radon-222 concentrations from three wells between 2010 and 2016. Median radon was 21.0 pCi/L, ranging from 2.0 to 72.0 pCi/L. All results were below federal action levels. This regional data is a snapshot of an area, not your specific household well. When comparing with neighboring counties, note that different aquifers or sampling depths can impact radon levels, so direct comparisons do not guarantee your water’s quality. Use these figures to understand local trends, not to judge your water definitively.

If You Want to Rule Out Concerns About Radon in Water Starting With the Cheapest Methods

Begin with simple steps like checking your water’s source and depth, since radon levels can vary with well depth. Next, consider whether any local health department has tested water quality records for your system or neighborhood. If there is no data or uncertainties remain, a water quality lab test specific to radon-222 on your household water is necessary to determine your individual concentration. This sequence helps avoid unnecessary treatment costs until radon presence and level are known.

If You Are Wondering What 'Detected,' 'Median,' and 'Range' Mean in This Sampling Record

• Detected means the measurement instrument found radon in all three wells sampled; none had values below the reporting limit.
• Median indicates the middle value—half the samples were above 21.0 pCi/L, half below—offering a central estimate for the area aquifer.
• Range denotes the lowest (2.0 pCi/L) and highest (72.0 pCi/L) radon concentrations observed among samples, indicating variability between wells and depths.

These values do not establish your water’s radon level, which only direct testing can confirm.

If You Need to Distinguish Radon Concerns From Other Commonly Confused Water Issues

Radon is a radioactive gas that dissolves in groundwater and is chemically different from contamination like iron or sulfur compounds that cause color, taste, or odor issues. Radon does not change water’s taste or smell but poses concerns related to radioactivity when inhaled or ingested. Proper testing distinguishes radon levels from these unrelated water characteristics, ensuring you address the actual problem.

If You Have a Large Household, a Second Home, or Seasonal Property

In homes with high water usage—such as larger households or seasonal residences—radon treatment choices may differ. Systems designed for average use might not cope efficiently, causing less effective radon reduction. You should measure your household’s water demand to select a suitable treatment capacity. This avoids under- or over-sizing the system, ensuring consistent performance and operational efficiency for your particular living situation.

Once you’ve assessed your water demand and radon level through proper testing, the Pentair Radon in Water Filter ships ready to configure with your household needs in mind. It uses a documented approach to reduce radon-222 in water efficiently, tailored to your measured demand.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2016-07-13. 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 327PCNS aquifer (McDowell County): 3 results from 3 wells, median 21.0 pCi/L, range -2.0-72.0 pCi/L; none above any federal threshold