You might notice no distinct taste or appearance issues at your tap despite uranium and radium being present in local aquifers. This checklist helps you understand what regional data say about these substances and what matters for your household.
Understanding the Range of Alpha Particle Measurements and Federal Reference Points
Measured levels in Sherburne County wells are below federal uranium-radium thresholds
Sampling by the U.S. Geological Survey in Sherburne County's aquifer 112PLSC found alpha particle activity ranging from -0.1 to 6.0 pCi/L, with a median of 0.8 pCi/L. None of 32 samples exceeded any federal limits, demonstrating no area-wide regulatory exceedances during 2018.
Regional data do not indicate unsafe water by themselves
Detection means an instrument measured alpha particle activity, not that any water source violates safety requirements. Individual testing is needed to know your household’s condition.
Differences Between Uranium-Radium and Commonly Confused Water Issues
Uranium-radium affects radiation measures, not taste or odor
Unlike minerals causing discoloration or sediment, uranium and radium emit alpha particles without changing water taste or smell.
Uranium-radium presence is distinct from microbial or chemical contamination
These radioactive elements differ from bacteria or chemical pollutants that may require different treatment approaches.
Clarifying Terms: Detected, Median, and Range Mean in the Sampling Record
‘Detected’ indicates measurable alpha particle activity in all samples
Each of the 32 results showed some presence of alpha particle activity; none were below the instrument’s reporting limit.
Median reflects the middle value of all measurements (0.8 pCi/L)
This value helps summarize typical levels across sampled wells.
Range shows minimum to maximum recorded values from -0.1 to 6.0 pCi/L
Values below zero reflect background adjustments and are considered effectively zero.
Household Signs That May or May Not Indicate Uranium-Radium Issues
No direct sensory clues indicate uranium-radium presence
Since alpha radiation is not detectable by sight, smell, or taste, absence of these does not confirm absence of uranium-radium.
Water testing is essential for true presence and concentration
Testing for alpha particle activity or uranium and radium specifically is the only reliable method to know your water’s status.
Other water quality problems usually show staining or taste changes
Routine water quality complaints do not reliably indicate uranium or radium levels.
Key Information to Gather Before Consulting on Treatment Options
Record results from your own water testing for uranium, radium, or alpha particles
Your water’s actual measurements determine the treatment class needed.
Note well depth and water source details
Local aquifer depths ranged from 8 to 57 feet; your well’s specifics may influence treatment choice.
Document any water quality symptoms or unusual observations
This information can help identify other water issues separate from uranium-radium.
How Public System Sampling Differs from Private Well Testing
Area sampling provides a regional overview, not household-specific data
Government data show general conditions in Sherburne County’s aquifer but cannot confirm your home’s water quality.
Private well analysis is required to determine your water’s uranium-radium content
Direct testing is the only definitive way to assess if your water needs specialized treatment.
Public records do not replace private water quality assessments
Use regional data as a guide but rely on your own water tests for decision-making.
What You Should Not Conclude from Area Uranium-Radium Data
Do not assume your water contains the exact levels or exceeds any safety thresholds based on regional median or range data. Area sampling does not indicate health risk at your tap. To identify the treatment class needed, obtain specific measurements of your household water before choosing a solution.
Once you have testing results, a targeted option like the Pentair Uranium & Radium System can offer capacity for up to 32,000 grains, designed to address uranium and radium effectively when present in your water supply.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2018-07-31. 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 112PLSC aquifer (Sherburne County): 32 results from 16 wells, median 0.8 pCi/L, range -0.1-6.0 pCi/L; none above any federal threshold
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