Government Data on Radon in Chesterfield County Aquifer 211MDDF
The U.S. Geological Survey sampled radon-222 in 12 groundwater tests from 11 wells in Chesterfield County's aquifer 211MDDF between August 2011 and February 2012. Test depths ranged 185 to 458 feet. Radon was detected in every sample, with a median concentration of 189.5 picocuries per liter (pCi/L) and values ranging from 64.0 to 320.0 pCi/L. None of these samples exceeded federal health thresholds. These figures represent regional groundwater conditions, not the radon levels in any individual well or home water supply.
Effects of Untreated Radon in Water Over Time
Leaving radon untreated in household water may result in ongoing exposure through inhalation and ingestion. Radon is a radioactive gas that can volatilize from water during activities like showering and cooking, contributing to indoor air radon levels. Chronic exposure to radon is linked to an increased risk of lung cancer, especially when combined with radon entry from soil gas. Radon in water typically affects indoor air quality more than direct ingestion risks, but untreated radon remains a persistent concern in homes drawing from aquifers like 211MDDF if mitigation is insufficient.
Water Characteristics at the Tap After Enhanced Radon Treatment
When a residential radon water treatment system such as the Fleck Radon in Water Filter is added or upgraded, radon levels in the water supply at the tap decrease significantly. Treated water releases less radon gas into household air during typical water use. The water's taste and odor do not significantly change due to radon removal since radon is odorless and tasteless. Improved treatment results in reduced radon volatilization indoors, indirectly improving indoor air quality.
Health-Based Limits Versus Aesthetic Secondary Standards in Radon Water Quality
Federal radon standards for water are health-based and focus on minimizing cancer risk rather than water taste or appearance. Secondary aesthetic standards, which apply to other constituents like chloride or total dissolved solids, address issues like taste and corrosivity but do not apply to radon. Radon concentrations below health-based federal thresholds do not pose a violation or proven safety risk. Instead, they indicate radon is present at levels considered manageable with proper treatment. This distinction clarifies why detection alone is not a cause for alarm but a prompt for appropriate mitigation.
How the Fleck Radon in Water Filter Works to Remove Radon
The Fleck Radon in Water Filter uses a specialized process designed to reduce radon concentration in residential water supplies. It typically operates by aeration or activated carbon filtration to lower radon dissolved in water before it reaches the tap. The system ships ready to configure with household plumbing and requires no additional equipment to perform its radioactive gas reduction function. This documented technology is effective for users whose current equipment can no longer meet radon reduction needs, helping restore water quality and reduce airborne radon released during water use.
Considerations for Large or Seasonal Households
Homes with multiple occupants, large water demand, or seasonal occupancy patterns may experience varied radon exposure depending on water usage volume. The Fleck Radon in Water Filter can accommodate increased flow rates and intermittent use, but system performance should be verified for larger or infrequently used properties. Adjusting treatment expectations means anticipating consistent radon reduction while managing peak water usage periods. Residents should plan for potential changes in radon levels when water consumption varies throughout the year.
Testing to Confirm Your Water's Radon Level
To understand radon in your own household water, ordering a certified laboratory radon test is essential. This test measures radon concentration directly from your water source and provides the data needed to assess treatment effectiveness and safety. A test result below federal health-based thresholds confirms radon is within a manageable range, while higher results may indicate the need for enhanced mitigation. Accurate testing is the key to confirming your water’s radon level and guiding your choice of treatment upgrades or additions.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2012-02-09. 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 211MDDF aquifer (Chesterfield County): 12 results from 11 wells, median 189.5 pCi/L, range 64.0-320.0 pCi/L; none above any federal threshold