How Copper Enters Groundwater in Van Buren County's Aquifer 328BLYD
Copper is a naturally occurring element in rocks and soil which can dissolve into groundwater over time. In Van Buren County, copper presence in the aquifer 328BLYD likely results from mineral deposits and interactions between water and copper-bearing materials underground. Additionally, human activities such as plumbing with copper pipes can influence the taste of water but do not directly affect the measured aquifer data.
Variations in Copper Levels Over Time: What the Data Shows
The U.S. Geological Survey collected 51 copper measurements from 48 wells in this aquifer area between July 2011 and July 2015. These samples reflect several years of data to account for seasonal or multi-year changes but show no consistent upward or downward trend. The range of detected copper levels spanned from 0.0 to 120.0 micrograms per liter, with most samples (32 out of 51) below detection limits.
Reading the Numbers: Median and Range Explained for Homeowners
The median copper concentration in these samples was 0.0 micrograms per liter, meaning half of the measurements detected no copper at all. The highest recorded value, 120.0 micrograms per liter, remains well below federal thresholds for copper in drinking water. This wide range suggests some wells may register copper presence while many do not, indicating variability in water chemistry across the area.
Understanding Aesthetic Versus Health Standards for Copper
The U.S. Environmental Protection Agency sets a health-based action level for copper at 1,300 micrograms per liter, primarily to prevent potential health risks from long-term exposure. Van Buren County aquifer samples are far below this level, so copper detections here are not a health concern. However, copper can cause an unpleasant metallic taste or slight discoloration at much lower concentrations, which is an aesthetic secondary standard considered separately from safety.
Comparing Copper Data from Van Buren County to Neighboring Areas Without Overinterpretation
While Van Buren County aquifer 328BLYD measurements show copper concentrations up to 120 micrograms per liter, neighboring counties may report different ranges depending on local geology and water sources. It is important not to assume that your home’s water will reflect higher or lower copper just because nearby areas differ. Only direct, on-site testing can determine your individual water’s copper content.
Sampling depth was consistent, with wells between 120 and 120 feet deep included, indicating similar aquifer layers were evaluated in this area.
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This summary is based on U.S. Geological Survey sampling data collected from 48 wells in Van Buren County’s aquifer 328BLYD between 2011 and 2015. For more information, visit the USGS water data portal.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2015-07-13. 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 Copper in the 328BLYD aquifer (Van Buren County): 51 results from 48 wells, median 0.0 ug/L, range 0.0-120.0 ug/L; none above any federal threshold