Government data from the U.S. Geological Survey shows that radon-222 was detected in all 17 groundwater samples taken from wells in Suffolk City County’s aquifer 217PTMC. These samples, collected from three wells ranging in depth from 500 to 1775 feet between 2019 and 2025, had a median radon concentration of 200 pCi/L, with a range from 160 to 350 pCi/L. No federal threshold was exceeded in these samples.
1. What Changes for a Large Household, a Second Home, or a Seasonal Property
Household size and water usage patterns influence how radon in water may affect your property. Larger households draw more water daily, potentially increasing radon exposure if the water is untreated. Seasonal homes or second residences often have intermittent water use, which can affect radon levels in the plumbing and air when the property is occupied again. Understanding your family’s water consumption pattern helps in choosing treatment equipment that matches demand, ensuring effective radon reduction without oversizing.
2. Maintenance Rhythm of the Documented Technology in Plain Terms
The Autotrol Radon in Water Filter ships ready to configure and relies on routine maintenance to sustain its radon reduction performance. Typically, filter media replacement or regeneration is recommended based on water volume treated or elapsed time benchmarks, ensuring radon removal remains effective. Familiarity with the maintenance schedule before purchase helps plan ongoing care without surprises, maintaining safety and efficiency in radon mitigation.
3. What 'Detected', 'Median', and 'Range' Mean in the Sampling Record on This Page
In the Suffolk City County aquifer sampling, 'detected' means radon-222 was measured in every sample instrumentally, but detection does not indicate an unsafe or violated standard. 'Median' refers to the middle value of all measured radon levels, which was 200 pCi/L here. The 'range' from 160 to 350 pCi/L shows the lowest and highest radon concentrations found among samples. These figures describe a regional groundwater characteristic and do not specify what any individual well contains.
4. The Household or Facility Symptoms That Do and Do Not Point to This Problem
Radon in water itself usually has no taste, odor, or appearance changes, so symptoms are subtle. Elevated radon in water can contribute to indoor air radon when water is used for showering or cooking, but waterborne radon often plays a smaller role in indoor radon levels compared to soil gas entry. Therefore, respiratory issues or odors are unlikely to indicate radon in water specifically. Testing is necessary to confirm radon presence in household water rather than relying on visible or sensory clues.
5. How to Compare This Area’s Record With a Neighbouring County’s Without Overreading It
Radon concentrations vary based on geology and aquifer characteristics. Comparing Suffolk City’s sampling data with that of a neighboring county should be done by reviewing their respective governmental radon reports directly, noting differences in median and range values. It is important to avoid assuming that a higher or lower regional median translates directly to one’s own well water. Each well’s radon level can differ even within the same aquifer, so individual testing is the definitive step.
In conclusion, the essential test to determine your household’s radon exposure from water is a laboratory radon analysis of your specific water supply. This result clarifies if radon reduction equipment like the Autotrol Radon in Water Filter is needed and what capacity fits your situation. Choosing treatment guided by your test ensures safer water with confident equipment selection.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-04-01. 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 217PTMC aquifer (Suffolk city County): 17 results from 3 wells, median 200.0 pCi/L, range 160.0-350.0 pCi/L; none above any federal threshold

