Are you wondering what the uranium-radium data from your area means for your household water quality? This page helps you understand the uranium results documented by U.S. Geological Survey wells in Arapahoe County's aquifer and how to interpret certified laboratory tests following your equipment's failure.
Samples, Wells, and What the Data Represents
Number of Wells Sampled
Data comes from one separate well sampled multiple times between January 2010 and December 2025. Although only one well was sampled, it was measured on 60 occasions, providing repeated observations over time.
Depth of Sampled Wells
The well sampled is approximately 26 feet deep. This depth relates to local aquifer conditions but does not guarantee the same profile for your own well.
Implications of a Small Sample Pool
Since these samples come from a single well in the region, the data reflects conditions at that specific location and time range. Your well’s water may differ, so a certified water test is essential for precise evaluation.
Understanding Certified Laboratory Uranium Test Reports
What the Test Measures
Certified laboratory tests report uranium concentrations in micrograms per liter (ug/L). They provide numerical results showing the amount of uranium detected in your water sample.
How to Read Test Values
Results typically include a numeric measurement and whether uranium was detected above the laboratory’s reporting limit. Detection means the instrument found uranium in the sample but is not an indication of safety or violation by itself.
Confirming Your Well’s Specific Conditions
To know your household’s exact uranium level, a certified test of your water is necessary. Regional figures do not predict individual well concentrations.
What the Measured Uranium Range Means Relative to Federal Standards
Range of Uranium Concentrations Found
The 60 measurements from the sampled Arapahoe County well ranged from 125.0 to 293.0 ug/L, with a median value of 190.0 ug/L.
No Federal Health Violations Detected
None of the values exceeded any federal uranium threshold. This means the area’s tested well complied with federal health guidelines during sampling.
Limits Are Regional Benchmarks, Not Individual Assessments
Federal thresholds provide regulatory context but do not determine your water’s safety without direct testing.
Explanation of Sampling Terms: Detected, Median, and Range
Detected in All Tests
Uranium was detected in each of the 60 test results, indicating consistent presence in the sampled well.
Median Represents the Middle Value
The median (190.0 ug/L) is the middle concentration, meaning half the measurements were higher and half were lower.
Range Shows Variation Across Tests
The range from 125.0 to 293.0 ug/L reflects variations in uranium levels over time in the sampled well.
Household Signs That May or May Not Indicate Uranium-Radium Issues
Signs Common in Uranium-Influenced Water
- Unusual metallic taste or discoloration can sometimes occur but are not definitive indicators.
- Mineral stains, although more often related to iron or manganese, might coincide with uranium presence.
Signs Unlikely to be Caused by Uranium or Radium
- Cloudy or turbid water is not typically linked to uranium or radium.
- Strong odors generally stem from other water constituents.
What Regional Uranium Detection Data Should Not Lead You to Conclude
Do not assume your well’s uranium concentration matches the sampled well’s data. Detection in regional samples does not mean your water is unsafe or in violation of any standard. To fully understand your household’s water quality, obtaining a certified laboratory test for uranium after your previous equipment has failed is necessary.
Once you have a test result, equipment like the Autotrol Uranium & Radium System, which ships ready to configure, can help manage uranium and radium in your water with a grain capacity of 32000, supporting consistent water quality in your home.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-12-11. 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 aquifer (Arapahoe County): 60 results from 1 wells, median 190.0 ug/L, range 125.0-293.0 ug/L; none above any federal threshold
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