Radon Levels in Kanawha County Groundwater: What Households Should Know

Kanawha County’s aquifer 327KNWH supplies many residential wells drawing from depths between 58 and 160 feet. Water moves from underground to household taps without treatment unless a system is added. In this setting, radon-222 is a naturally occurring gas measured by the U.S. Geological Survey in groundwater samples taken from this aquifer.

Household Indicators Related to Radon in Water

Strong indicators do not include obvious changes in water taste, smell, or appearance

Radon is a colorless, odorless, and tasteless radioactive gas. Therefore, common water symptoms like discoloration or unusual odors do not signal radon presence or concentration.

Exposure risk is mainly through inhalation of radon released during water use

Radon gas can enter indoor air when water is used for showering, cooking, or washing. The presence of radon in water itself does not cause a direct waterborne symptom but may contribute to indoor air quality concerns.

Testing water specifically for radon is necessary to determine its concentration

Only a laboratory test of your household water can reveal the radon level in your well or supply. Regional measurements provide a guide but do not specify your water’s condition.

Understanding 'Detected', 'Median', and 'Range' in Radon Sampling

'Detected' means radon was measurable in all six sampled wells

Radon-222 was found in every sample collected from wells across Kanawha County’s aquifer 327KNWH, showing it is commonly present, not absent.

The median radon concentration was 42.5 picocuries per liter (pCi/L)

This median value represents the middle level when all six samples are ordered, providing a central tendency for the area’s groundwater radon.

The range from 8.0 to 320.0 pCi/L shows variability across wells and times

Radon concentrations differ by well depth, location, and sampling date, reflecting natural fluctuations rather than contamination or violation of standards.

None of the sampled wells exceeded federal radon thresholds

This indicates that while radon is present, levels measured in these samples do not surpass regulatory health-based limits in groundwater.

Sample Size and Its Implications

Six wells were sampled from Kanawha County aquifer 327KNWH

The data represent a limited number of groundwater points, meaning localized concentrations in untested wells could differ.

Sampled depths ranged from 58 to 160 feet, covering typical residential well depths

These depths reflect the usual water source depths, making the data relevant to many households using groundwater.

A small sample size means regional data informs but does not define individual well conditions

Because only six samples were collected over seven years, the results offer a general regional snapshot rather than a precise well-specific assessment.

How Radon Enters Groundwater in Kanawha County

Radon is produced naturally by the decay of uranium in surrounding soils and rocks

Uranium minerals in this area’s geology release radon gas that dissolves into groundwater moving through aquifer 327KNWH.

Groundwater movement brings radon into wells drawing from this aquifer

As water fills wells drilled into this aquifer, radon dissolved in the water arrives at household taps if not removed by treatment.

Radon levels in water can fluctuate over time due to geological and seasonal factors

Seasonal variations and changes in groundwater flow cause radon concentrations to rise or fall, contributing to the range observed in sampling results.

Matching Treatment Capacity to Household Water Use

Determine your daily water demand to select sufficient treatment capacity

Typical household use ranges widely; knowing your daily volume of water helps ensure any radon removal system matches your needs.

The C-Series Radon in Water Filter ships ready to configure for residential demand levels

This system is designed to reduce radon concentration in water and can be selected based on the household’s consumption patterns.

Regular monitoring of your water’s radon level supports ongoing treatment effectiveness

Because radon concentrations vary naturally, periodic testing helps confirm the treatment is performing as expected for your household.

The radon record presented here covers six samples of groundwater from Kanawha County’s aquifer 327KNWH collected between 2010 and 2017; it informs about the area but not any specific well. For complete details, see the U.S. Geological Survey groundwater data at their official website.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2017-07-18. 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 327KNWH aquifer (Kanawha County): 6 results from 6 wells, median 42.5 pCi/L, range 8.0-320.0 pCi/L; none above any federal threshold