Arsenic Concentrations in Caroline County Are Within Federal Safety Thresholds
Water drawn from the 122CLVR aquifer in Caroline County comes from depths between 165 and 379 feet, feeding many residential wells. Groundwater samples collected by the U.S. Geological Survey during the summer months of 2010 showed arsenic detected in seven out of eight tested wells. The measured concentrations ranged from 0.02 to 0.1 micrograms per liter, with a median value of 0.03 micrograms per liter. Importantly, all measurements were below the federal maximum contaminant level for arsenic in drinking water.
This regional data does not provide the arsenic concentration of any specific household water source. Homeowners should understand that detection of arsenic in these samples does not equate to a violation or unsafe water condition but represents a trace presence within the monitored area aquifer.
Seasonal and Multi-Year Sampling Shows Consistency in Arsenic Levels
The eight samples were taken over a two-month span from late June to late August 2010, providing a snapshot reflecting summer conditions in Caroline County. While arsenic concentrations can fluctuate with changing groundwater conditions or water table levels, this particular dataset does not include seasonal variation beyond this period. However, the narrow range of detected values suggests relative stability in arsenic presence in the sampled aquifer during that time frame.
Clarifying Detected, Median, and Range in Regional Arsenic Monitoring
In this context, 'detected' means the arsenic concentration measured was above the laboratory's reporting limit, not necessarily above any health guideline. The median of 0.03 micrograms per liter represents the middle value when all results are ordered, providing a sense of central tendency in the data. The range from 0.02 to 0.1 micrograms per liter indicates the spread of arsenic levels measured among the sampled wells, emphasizing variability but all within safe limits.
Well Depth and Source Type Influence Expected Arsenic Levels in Household Water
The wells sampled for this data set are relatively deep, between 165 and 379 feet, which is typical for accessing the 122CLVR aquifer. Deeper wells often encounter different mineral compositions compared to shallow wells, which can affect arsenic concentrations. Homeowners relying on shallower sources or different local geology may find variations in their own water chemistry, underscoring the importance of individual water testing to determine actual arsenic levels.
How Residential Arsenic Treatment Systems Address Detected Concentrations
Where testing confirms arsenic presence in household water, treatment can reduce arsenic to preferred levels. One documented solution is the Autotrol Arsenic Filter, a system designed to reduce arsenic concentrations through a filtration process suitable for residential demand. This system ships ready to configure and is intended to address varying arsenic levels effectively, helping households maintain water quality within recommended ranges.
For homeowners in Caroline County using water from the 122CLVR aquifer, evaluating their own water's arsenic concentration through testing is a necessary step before selecting treatment options. The Autotrol System offers a reliable method to reduce arsenic where present, aligning with daily household water needs measured by the user.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2010-08-25. 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 122CLVR aquifer (Caroline County): 8 results from 8 wells, median 0.03 ug/L, range 0.02-0.1 ug/L; none above any federal threshold
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