If You Are Reviewing the Hillsborough County Alpha Particle Sampling Record
The U.S. Geological Survey tested groundwater in the 112NRSD aquifer beneath Hillsborough County, measuring alpha particle activity that can indicate uranium and radium presence. Samples from nine wells taken between July and November 2012 show alpha particle levels ranged from 0.5 to 23.0 picoCuries per liter (pCi/L), with a median of 5.4 pCi/L. All readings were below federal safety thresholds. These sampled wells were relatively shallow, from 14 to 39 feet deep. As a homeowner, this means uranium-radium is detectable in area groundwater but at concentrations within regulatory limits.
If You Are Comparing Hillsborough County’s Uranium-Radium Data to Nearby Regions
When comparing to neighboring counties, note that local geology and aquifer characteristics greatly affect uranium-radium levels. Hillsborough County’s median of 5.4 pCi/L is specific to aquifer 112NRSD within the county and to the tested wells' depths. Other regions may have higher or lower alpha particle detections based on their distinct water sources and testing timelines. Use these differences only as a general guide, not as proof of safety or risk for your household well or municipal supply.
If You Are Withdrawing Options: From Initial Checks to Detailed Water Testing
Begin by checking for any discoloration or unusual taste in your water, which can sometimes accompany elevated mineral levels. Next, review your water utility’s latest quality report if on municipal supply. For private wells, the definitive step is laboratory testing measuring uranium, radium, or alpha particle activity directly. Such a test will establish your specific water’s status rather than relying solely on area data.
If You Are Considering How Seasonal or Multi-Year Variations Affect Uranium-Radium Levels
The 2012 USGS data covers five months mid-year, providing a snapshot rather than a full seasonal profile. Groundwater uranium-radium levels can fluctuate with changes in rainfall, water table depth, and aquifer recharge rates over years and seasons. While multiple samples show detected alpha particle activity consistently, absence of data outside this period means seasonal peaks or troughs cannot be ruled out based on this record alone.
If You Wonder How Household Plumbing Materials and Age Influence Uranium-Radium Concerns
Uranium and radium originate from groundwater geochemistry and are unaffected by plumbing materials or pipe age. However, plumbing can influence water appearance and taste in other ways, such as through corrosion or leaching of metals unrelated to uranium-radium content. Thus, pipe condition does not explain alpha particle readings but should be assessed separately when water quality issues arise.
The one test to order for your household water is a laboratory analysis measuring alpha particle activity or uranium and radium specifically. A result below federal limits would settle concerns. Should elevated levels appear, the Fleck Uranium & Radium System, with a 32,000 grain capacity, ships ready to configure as a tailored treatment solution to reduce uranium and radium from household water sources.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2012-11-14. 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 Alpha particle in the 112NRSD aquifer (Hillsborough County): 18 results from 9 wells, median 5.4 pCi/L, range 0.5-23.0 pCi/L; none above any federal threshold
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