Understanding 'Detected', 'Median', and 'Range' in Kent County Arsenic Sampling
Between July and August 2015, the U.S. Geological Survey sampled 12 wells within Kent County’s aquifer 125RCCS, recording arsenic concentrations. Of these, 11 showed detectable arsenic; one was below the reporting limit. The median arsenic level was 20.2 micrograms per liter (µg/L), and sample concentrations ranged from 1.7 to 27.3 µg/L. These measurements reflect conditions in sampled wells 180 to 380 feet deep and do not specify concentrations in any individual household well.
Interpreting Median and Range Values: What It Means for a Homeowner
The median value of 20.2 µg/L represents the middle concentration among the twelve tested wells, suggesting half had higher and half lower arsenic levels at sampling time. The range from 1.7 to 27.3 µg/L indicates variability across wells in the area. However, none of these measurements exceeded federal arsenic thresholds, underscoring that detected levels do not imply noncompliance or immediate health risks by regulation.
Seasonal and Multi-Year Patterns Evident in the Record Dates and Variability
The sampling occurred over approximately six weeks in summer 2015. This snapshot captures short-term variation but does not provide insight into longer-term trends. Seasonal factors, such as groundwater recharge, temperature, or well usage, can influence arsenic readings. Regular testing of a specific water source is necessary to detect any temporal changes relevant to that well.
Changes at the Tap Using the C-Series Arsenic Filter
When configured, the C-Series Arsenic Filter reduces arsenic concentrations consistently at the point of use, improving water quality compared to untreated groundwater reflecting the sampled levels. This technology traps arsenic compounds, thereby lowering potential exposure in household water without relying on chemical additives. It ships ready to configure, serving as a customized solution matched to a homeowner’s test-confirmed arsenic concentration.
Sources of Arsenic in Groundwater Within Kent County’s 125RCCS Aquifer
Arsenic naturally enters groundwater here primarily through geologic formations releasing arsenic-bearing minerals over time. Depth and local geology influence dissolved arsenic levels. Human activities typically have less impact on these deep aquifer concentrations. Once in groundwater, arsenic can move into distribution systems supplying individual wells unless treated.
Household Indicators Related to Arsenic Presence and Limits of Visual Identification
Arsenic cannot be detected by taste, appearance, or smell. No staining or corrosion directly signals arsenic presence. Therefore, household symptoms alone do not confirm arsenic issues. The only reliable method to determine arsenic levels in water is laboratory testing targeted to the household’s source. This confirms whether treatment is needed to meet personal or regulatory preferences.
In summary, 2015 USGS data for the Kent County aquifer 125RCCS area show arsenic widely detected in sampled wells, with concentrations within federal standards. This data informs but does not determine any individual well's water quality. Testing your household water is essential. For arsenic treatment, the C-Series Arsenic Filter offers a proven approach to reduce arsenic at the tap. Source details are maintained by the U.S. Geological Survey groundwater monitoring database.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2015-08-20. 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 125RCCS aquifer (Kent County): 12 results from 12 wells, median 20.2 ug/L, range 1.7-27.3 ug/L; none above any federal threshold