Scope and Sample Size Behind Warren County Arsenic Data
The data for arsenic in Warren County's aquifer 112OTSH comes from four samples collected from three separate wells between 2011 and 2020. These wells ranged in depth from 29 to 52 feet. Because this is a small number of samples and wells, the figures provide a general indication for the aquifer area, but cannot specify the arsenic level in any individual household's water supply.
Impact of Sample Depth and Well Type on Expected Arsenic Levels
The sampled wells were moderately shallow, so their arsenic readings mostly reflect groundwater conditions within the upper 50 feet of the aquifer. If a household's well is much deeper or shallower than this, or draws water from a different source type such as surface water, arsenic levels could vary significantly. Knowing your own well depth and source is essential for understanding your situation.
Distinguishing Between Aesthetic Secondary Standards and Health-Based Arsenic Limits
The recorded arsenic levels in Warren County's sampled wells ranged from 0.13 to 0.24 micrograms per liter (µg/L), with a median of 0.17 µg/L. All were below the federal health-based standard for arsenic in drinking water. It is important to know that detecting arsenic does not mean the water is unsafe. Aesthetic secondary standards, which relate to taste, staining, or odor, are separate and do not apply here since arsenic does not have an aesthetic limit. Compliance with health-based limits is the relevant factor for arsenic.
Estimating Treatment Needs Relative to Household Water Use
To decide on an appropriate arsenic treatment, homeowners should consider their daily water consumption and the potential arsenic concentration in their own well. Because individual well levels can differ from area data, testing your own water is necessary. The Fleck Arsenic Filter system ships ready to configure and can address arsenic removal needs effectively based on tested concentrations and household usage patterns.
Interpreting Median and Range: What Warren County Data Means for Your Home
The median arsenic concentration in area wells is 0.17 µg/L, a low value compared to the federal maximum contaminant level of 10 µg/L. The highest sample at 0.24 µg/L remains well below that threshold. While this suggests aquifer conditions with low arsenic presence, individual well testing remains the only way to confirm your home's water quality. Area data does not guarantee your water matches these figures and should not replace direct analysis.
What Area Arsenic Data Does Not Tell You
Government sampling and monitoring in Warren County provide valuable regional context but cannot define your household’s arsenic concentration. They do not indicate a violation or unsafe condition simply by detection. Only a certified water test of your specific water supply can determine arsenic levels and the need for treatment. Relying solely on area statistics risks over- or underestimating your water’s arsenic characteristics.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2020-11-02. 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 112OTSH aquifer (Warren County): 4 results from 3 wells, median 0.17 ug/L, range 0.13-0.24 ug/L; none above any federal threshold
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