Local Aquifer and How Water Reaches Your Tap
In Florida, many households rely on groundwater drawn from aquifers. Water travels from underground sources through wells into your home. Radon-222, a naturally occurring radioactive gas, can dissolve into groundwater from surrounding rock and soil before it reaches your tap.
Radon Left Untreated Over Years
Long-term exposure to radon in water can lead to health concerns primarily due to breathing radon gas released into indoor air during water use. While the U.S. Geological Survey samples in this aquifer area found radon in all 14 wells tested with concentrations ranging from 125.0 to 2920.0 pCi/L and a median of 465.0 pCi/L, none exceeded federal thresholds. However, radon levels fluctuate naturally, and untreated water can continuously contribute to indoor radon buildup if not managed.
Changes for Large Households, Second Homes, or Seasonal Properties
Larger households or extended use increases water consumption, potentially elevating the indoor air radon concentration from water use activities. Seasonal or second homes may face variable radon levels depending on water source conditions during occupancy. Intermittent use affects ventilation patterns, which also impacts radon gas dissipation indoors.
Notes to Record Before Considering Treatment Advice
- Precise well depth and construction details, including pump type
- Water source type (private well or community well)
- Results of a certified laboratory radon water test specific to your household water
- Duration and frequency of water usage in the home
- Existing ventilation or mitigation systems in place
Impact of Sample Depth, Well Depth, and Water Source Type
Radon concentrations can vary by well depth and the sampled zone within the aquifer. Deeper wells sometimes have different radon levels compared to shallow ones, depending on rock contact and groundwater flow. Knowing your well depth helps anticipate typical radon ranges but does not replace testing your actual water supply. Water from community systems has different treatment and monitoring protocols.
Additional Concerns for Commercial or Industrial Operators
Commercial or industrial water users face greater scrutiny and may require radon monitoring under regulatory frameworks not applicable to residential properties. They must consider factors such as water flow rates, indoor air quality standards, and worker exposure limits. Household users do not need to address these complexities but benefit from focused radon water testing.
Choosing the Right Test and Interpreting Results
The single essential step is ordering a certified laboratory analysis of radon in the household water supply. Only this test reflects your actual water conditions. A result below federal action levels provides reassurance; above these may justify considering a treatment option like the Fleck Radon in Water Filter, which ships ready to configure and reduces radon concentration in water before it enters your home.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2019-12-05. 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 aquifer (FIPS ): 14 results from 14 wells, median 465.0 pCi/L, range 125.0-2920.0 pCi/L; none above any federal threshold
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