Many households in Union Parish notice a subtle yet persistent radon presence in their water. This can become clear through taste changes, equipment strain, or routine testing, especially when existing treatment setups reach their limit. While your equipment is functioning, the water's radon level may sometimes surpass its treatment capacity, demanding a closer look at the local groundwater profile and what it implies for your water quality management.
How Public-System Records Differ from Private-Well Testing
Government data for Union Parish’s aquifer 124SPRT shows radon-222 detected in each of four wells sampled in 2012, with a median concentration of 96.0 picocuries per liter (pCi/L) and a range from 69.0 to 300.0 pCi/L. These figures reflect area-wide sampling rather than any one household’s water and are based on wells between 350 and 725 feet deep. Since no federal limit was exceeded in these samples, this area record represents a baseline of radon presence, not an individual violation or safety conclusion.
The Role of Plumbing Material and Age, Separate from Source Water
While radon originates in the aquifer, plumbing materials and their condition can affect how radon and other substances behave once in the home’s water. Older pipes or certain materials might impact radon release into air when water is used or influence the system's response to radon removal efforts. However, these factors do not change the raw radon content in the source water itself but can alter exposure routes and treatment system efficiency.
How Sample Depth, Well Depth or Source Type Changes What a Reader Should Expect
The 2012 radon data come from wells 350 to 725 feet deep, significantly influencing radon measurements. Deeper wells typically pull water with higher radon concentrations compared to shallow sources. Therefore, water drawn from shallower wells or municipal supplies may differ from these values. For private well owners, the actual radon level depends on their specific well’s depth, construction, and geology rather than area averages.
What 'Detected', 'Median' and 'Range' Mean in the Sampling Record on This Page
- Detected means the presence of radon was measured at levels above the instrument’s reporting threshold in all four area samples.
- Median of 96.0 pCi/L indicates that half the radon levels in the samples were below this value and half were above, providing a measure of central tendency.
- Range from 69.0 to 300.0 pCi/L shows the variability of radon concentration across the different wells sampled, highlighting that some wells yield substantially higher values within the area.
How to Compare This Area's Record With a Neighboring County's Without Overreading It
Comparing Union Parish’s 124SPRT aquifer radon data directly with a neighboring county’s or different aquifer is tempting but requires caution. Differences in geology, sample depth, and sampling dates can create varying results that do not reflect a strict boundary of water quality but rather local hydrogeology. Such comparisons should guide expectations rather than define exact conditions in a given well or household.
A Worked Example: Reading the Record's Median and Range as a Homeowner Would
If your household water has radon levels near the median of 96.0 pCi/L recorded for this aquifer, your current treatment equipment may sometimes approach its capacity limits, especially if usage rises or system performance fluctuates. Occasional radon readings closer to the upper range of 300.0 pCi/L in area wells suggest that water quality can vary significantly even within the same parish. Confirming your own water's radon concentration through a certified laboratory test is essential for precise treatment decisions.
When existing equipment falls short, the C-Series Radon in Water Filter ships ready to configure for adapting to your water demand and radon levels. It is designed to address the radon concentrations typical of Union Parish's deeper aquifer sources, helping households maintain effective radon reduction aligned with their measured needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2012-09-27. 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 124SPRT aquifer (Union Parish): 4 results from 4 wells, median 96.0 pCi/L, range 69.0-300.0 pCi/L; none above any federal threshold

