Government Sampling Overview for Sunflower County Aquifer 112MRVA
USGS groundwater data from eight wells sampled between 2010 and 2020 in Sunflower County found arsenic detected in all wells. The median detected concentration was 2.0 micrograms per liter, with results ranging from 0.54 to 9.6 micrograms per liter. No sample exceeded the federal arsenic threshold.
Key Information to Record Before Seeking Treatment Advice
Well Depth and Source Type
Note the depth of your well, as arsenic levels can vary with well depth. The local samples ranged from 60 to 115 feet deep.
Water Quality Reports and Testing History
Gather any recent water quality reports or testing results you have, including date and laboratory information.
Understanding Certified Laboratory Test Reports for Arsenic
Reported Concentration
Certified lab results provide arsenic concentration in micrograms per liter (ug/L). This figure reflects the arsenic level in your specific water sample.
Detection Limits and Reporting
Lab reports specify detection limits; a 'detected' arsenic means the instrument measured it, not that it is a violation or unsafe.
Interpreting USGS Data Terms: Detected, Median, and Range
Detected
All eight wells tested showed arsenic detectable above their respective reporting limits.
Median
The median value of 2.0 ug/L represents the middle point of all sample measurements, not a limit or average concentration in any single well.
Range
Arsenic concentrations varied from 0.54 to 9.6 ug/L across sampled wells, indicating natural variability in local groundwater.
Health-Based Standards Versus Aesthetic Secondary Standards for Arsenic
Health-Based Limits
Federal health-based standards for arsenic focus on minimizing risk. None of the sampled wells in Sunflower County exceeded these limits.
Aesthetic Standards
Aesthetic secondary standards influence taste and appearance but do not indicate health risks; arsenic is regulated based on health concerns, not aesthetics.
Impact of Sample and Well Depth on Expected Arsenic Levels
Variation with Depth
Arsenic concentrations can vary by depth; shallower wells may have different levels than deeper ones, making well-specific testing important.
Water Source Type
Different water sources (e.g., private wells versus municipal supply) may have distinct profiles of arsenic presence, emphasizing the need for individual water testing.
Stepwise Approach to Assessing Arsenic Before Treatment
Initial Visual and Odor Checks
Observe any unusual taste, color, or odor changes, though these are not definitive for arsenic presence.
Review Existing Water Tests
Evaluate any previous laboratory tests for arsenic to determine if levels have been measured.
Obtain Certified Laboratory Testing
Arrange for certified lab testing specifically for arsenic to establish your water's arsenic concentration.
Once you have confirmed arsenic levels, you can consider equipment such as the Fleck Arsenic Filter, which ships ready to configure and is designed to reduce arsenic in household water.
This USGS data reflects sampled groundwater arsenic levels from multiple wells in Sunflower County's aquifer 112MRVA. For detailed government records, see the USGS monitoring location 332340090320001.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2020-07-21. 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 Arsenic in the 112MRVA aquifer (Sunflower County): 8 results from 8 wells, median 2.0 ug/L, range 0.54-9.6 ug/L; none above any federal threshold
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