Radon Levels in Clark County Groundwater: What USGS Data Shows About Aquifer N400BSNRGC

Clark County’s groundwater from the N400BSNRGC aquifer supplies many homes with water drawn from depths between 291 and 1050 feet. This water travels from aquifer rock formations through well systems before reaching household taps. Understanding radon concentration trends and treatment options in this specific aquifer is critical for making informed water equipment choices.

Homeowners believe the Fleck Radon in Water Filter demands frequent upkeep

The Fleck Radon in Water Filter system requires routine maintenance to ensure effective radon reduction over time. Regular checks of filter media condition and system settings, which ship ready to configure, keep it functioning properly. Maintenance is typically spaced over months rather than weeks, making upkeep manageable for residential users.

Radon in groundwater originates naturally from geologic sources beneath Clark County

Radon-222 forms by radioactive decay of uranium present in underground rock formations native to the Clark County area. This inert gas can dissolve into groundwater as it passes through mineral layers. Because the N400BSNRGC aquifer consists of varied depths, radon levels can fluctuate due to natural geological factors rather than surface contamination.

Large households or seasonal homes may need adjusted radon treatment approaches

Homes with greater water usage or those used intermittently face different radon treatment demands. Increased water flow can affect filter lifespan and performance, while seasonal properties may require system checks after inactive periods to maintain readiness. Tailoring the Fleck Radon in Water Filter system’s operation to household size and use cycle helps ensure consistent radon reduction.

USGS sampling in Clark County’s aquifer relies on a small set of wells and samples

The available data on radon-222 in the N400BSNRGC aquifer comes from three sampled wells, each tested once between 2013 and 2015. While these three results consistently detected radon concentrations—ranging from 245.0 to 370.0 pCi/L with a median of 275.0 pCi/L—this limited sample size represents a small snapshot rather than exhaustive monitoring.

Well depth and source characteristics influence radon levels a homeowner should anticipate

Since sampled wells ranged in depth from 291 to 1050 feet, radon concentrations can vary with how deeply water is drawn. Typically, deeper wells in this aquifer show some variation in radon content due to the surrounding geological layers. Knowing the depth of one’s own well and testing water specifically are essential to understanding household radon risk rather than relying solely on regional data.

What the area data cannot tell individual homeowners about their water

Although government sampling confirms radon detection in Clark County’s N400BSNRGC aquifer, it does not establish the radon concentration in your specific well or tap water. No result in this sample set exceeded any federal threshold, and detection does not mean your water is unsafe. To determine your household’s radon level precisely, you need dedicated testing of your water source. Using the Fleck Radon in Water Filter system, which is designed to reduce radon, can provide peace of mind once your water’s radon concentration is confirmed.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2015-03-26. 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 N400BSNRGC aquifer (Clark County): 3 results from 3 wells, median 275.0 pCi/L, range 245.0-370.0 pCi/L; none above any federal threshold