Understanding Uranium-Radium in Clay County Water: Area Sample Insights and Household Relevance

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Scope and Limits of Uranium-Radium Data in Clay County

The data available reflects groundwater samples from Clay County’s aquifer 111ALVM, collected by the U.S. Geological Survey from nine wells between 2010 and 2026. These samples provide a broad picture of uranium presence in the regional aquifer but do not represent measurements of any specific household’s well water. Thus, while they inform about area conditions, they cannot determine the uranium or radium levels in your exact water supply.

Samples, Wells, and What a Small Dataset Means

The uranium results come from 50 individual samples taken at 36 to 105 feet depth across nine wells. Of these, uranium was detected in 23 samples, with levels ranging from 0.006 to 0.091 micrograms per liter. The remaining 27 samples were below the detection threshold. This sample size offers useful regional insight but is limited in size, so variability between wells and over time is possible. Your home's water may differ.

Clarifying Detected, Median, and Range in Area Sampling

In the dataset, 3 detected5 means instruments measured uranium above reporting limits in some samples. The median, 0.038 micrograms per liter, represents the middle value when all detected results are ordered, offering a typical regional level. The range indicates observed minimum and maximum concentrations. Importantly, none of these samples exceeded federal uranium thresholds, meaning the water sampled meets applicable health-based guidance.

Considerations for Sample Depth, Well Characteristics, and Water Source

Uranium concentrations can vary with well depth and construction. The sampled wells ranged widely in depth, which influences uranium presence as deeper or shallower groundwater may contain different levels. Additionally, whether water comes from bedrock aquifers or surficial sources can affect uranium content. Understanding your water source and well specifics is an important step in evaluating your household water quality.

What You Should Document Before Seeking Water Treatment Guidance

Before exploring treatment options, gather information about your water supply: depth of your well, type of aquifer tapped, any recent certified laboratory test results specifically for uranium and radium, and known water quality issues from your local water supplier if you use a public system. Such records help clarify what treatment may be appropriate if uranium or radium levels are a concern.

Origin of Uranium and Radium in Clay County Groundwater

In this region, uranium and radium enter groundwater naturally from the surrounding geology. Weathering of rocks containing these elements releases them into aquifers over time. This is a geological condition rather than a result of pollution. Such naturally occurring radioelements can vary widely in concentration depending on local mineralogy and groundwater flow.

Plumbing Materials and Household Water Quality Considerations

The materials and age of household plumbing do not affect uranium or radium concentrations in the source water, though they can influence other water quality aspects. This distinction is key because uranium and radium treatment addresses the water supply, not internal plumbing effects.

What Not to Conclude from Clay County Area Uranium Data

These area-level uranium findings do not confirm or deny the presence or safety of uranium and radium in any individual household’s water. A detection in area samples is not a violation or proof of unsafe water. Only testing your specific water source can establish your uranium and radium levels. If uranium or radium levels are confirmed to be a concern, the Autotrol Uranium & Radium System, with its 32,000-grain capacity, offers a documented method to reduce these elements from household water. It ships ready to configure for direct purchase, providing a treatment option when needed based on your water’s test results.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2026-05-12. 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 111ALVM aquifer (Clay County): 50 results from 9 wells, median 0.038 ug/L, range 0.006-0.091 ug/L; none above any federal threshold