Understanding Uranium-Radium in Grant County Water: What the USGS Records Reveal
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WSP Whole House Uranium & Radium Reduction System
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Which fixtures, appliances or processes are affected first and why
Uranium and radium dissolved in groundwater can enter household water systems, affecting water used for drinking, cooking, and bathing. Faucets and appliances that rely on untreated groundwater—such as kitchen sinks, showers, and water heaters—are the first points of contact. These fixtures experience the initial consequence of uranium-radium presence because they deliver water directly from the home’s well, where concentration may vary.
A worked example: reading the record's median and range as a homeowner would
The U.S. Geological Survey (USGS) sampled groundwater from wells in Grant County’s aquifer 000OVBD over a period from mid-2010 to late 2025. Across 30 samples taken from 14 wells, uranium was detected in every result, ranging from 0.635 to 47.9 micrograms per liter (ug/L), with a median of 10.02 ug/L. While these figures show that uranium is consistently present, none of the samples exceeded federal health-based thresholds, indicating the levels found in this regional aquifer have not surpassed official safety benchmarks. As a homeowner, these numbers suggest your well water might contain uranium within a similar range, but only your own water test can precisely determine your household’s specific levels.
How many samples and wells stand behind the figures, and what a small sample means
The data represent 30 samples drawn from 14 different wells with depths varying from 15 to 153 feet. This sampling size provides a meaningful regional picture but does not guarantee uniformity across all wells in the area. Local geological variations and well construction can influence uranium and radium levels substantially. A small number of wells and samples means the overall findings are best used as a general guide rather than a definitive measure of any individual well’s water quality. For homeowners, this highlights the importance of conducting personalized testing to understand the exact composition of their water.
Maintenance rhythm of the documented technology in plain terms
The C-Series Uranium & Radium System addresses uranium and radium by reducing them from household water through a reliable filtration process. This system ships ready to configure and is designed for regular upkeep based on a treatment capacity of 32,000 grains. Homeowners should expect routine maintenance cycles that involve monitoring system performance and periodic replacement or replenishment of filtration media to sustain effective reduction of uranium and radium over time.
What 'detected', 'median' and 'range' mean in the sampling record on this page
In this record, 'detected' means the presence of uranium was measured by laboratory instruments in every sample taken; it does not imply a health violation. The 'median' value is the middle concentration when all 30 samples are arranged from lowest to highest, offering a central estimate of uranium levels in the aquifer. The 'range' spans from the lowest to highest detected values, reflecting natural variability in groundwater uranium. Understanding these terms helps homeowners interpret the presence and variability of uranium in local groundwater without making assumptions about safety or individual well conditions.
How to compare this area's record with a neighbouring county's without overreading it
Comparing uranium-radium levels between Grant County’s aquifer and a neighboring county’s groundwater can provide context but must be done cautiously. Differences in geological formations, sampling methods, and time periods can influence results. Variations in median and range between regions indicate general trends rather than precise predictions for any specific well. Overreading comparisons risks assuming your water resembles a neighboring area’s data, which may not be the case. Use such information as a broad reference and rely on direct well water testing for accurate, site-specific data.
The uranium data mentioned here reflect groundwater samples collected from 14 wells in Grant County’s aquifer 000OVBD between July 2010 and September 2025, documented by the U.S. Geological Survey. For full details and updates, consult the official USGS groundwater monitoring sources.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-09-30. 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 Uranium in the 000OVBD aquifer (Grant County): 30 results from 14 wells, median 10.02 ug/L, range 0.635-47.9 ug/L; none above any federal threshold