How Minerals Naturally Occur in Marquette County’s Groundwater
Marquette County's residents commonly draw water from aquifer 112SDGV, an underground formation supplying wells roughly 41 to 67 feet deep. The U.S. Geological Survey collected samples between 2013 and 2024 from two separate wells in this area. These records show calcium and magnesium—key minerals contributing to water characteristics—are consistently present. The median mineral concentration measured was 216.0 mg/L, with results ranging from 97.4 to 218.0 mg/L.
These minerals dissolve from local rocks and soil, naturally entering groundwater over time. This process means water in the region will reflect the local geology's mineral makeup, influencing its interaction with skin and household plumbing.
Does Household Size or Seasonal Use Change Mineral Impact?
Household water use trends can affect how water quality may influence skin conditions. Larger households or seasonal residences might experience variations in water quantity and usage patterns, potentially intensifying mineral effects felt on skin during bathing. However, the mineral concentrations documented in the local aquifer remain constant regardless of household size. The difference lies in exposure frequency and volume, which can influence dryness or irritation sensations in sensitive individuals.
How Well and Sample Depth Affect Water Quality Expectations
The sampled wells at 41 to 67 feet deep provide a reliable indication of typical groundwater mineral levels in this part of Marquette County. Shallow wells might experience different mineral profiles depending on surface interactions, while much deeper wells could vary with geological changes. For those concerned about dry skin, understanding the depth and source of their own water is important. A personal water test is the only way to confirm specific mineral concentrations in one’s household supply.
Seasonal and Multi-Year Patterns in Local Water Mineral Levels
The records spanning over a decade show mineral presence consistently detected without significant fluctuations beyond the noted range. This stability suggests that seasonal changes or extended climate patterns have limited impact on the calcium and magnesium levels in aquifer 112SDGV. Households observing changes in skin dryness over time might need to consider factors beyond mineral variation, such as indoor humidity or skincare routines.
Clarifying What 'Detected,' 'Median,' and 'Range' Indicate in the Data
The term 'detected' signifies that instruments measured calcium and magnesium in all samples, not that their presence is harmful. The 'median' concentration represents the middle value in the data set, offering a typical picture of mineral levels, while the 'range' indicates the spread between the lowest and highest findings. None of these measurements exceed any federal safety thresholds or suggest unsafe conditions.
What This Regional Data Does Not Confirm About Your Water and Skin
While Marquette County’s groundwater contains calcium and magnesium within expected levels, this regional data cannot identify the exact mineral content of your household water. Detection of these minerals alone does not confirm they cause dry skin for everyone. Personal water testing is necessary to establish your unique water chemistry. For those wanting relief from mineral-related skin dryness, the C-Series Dry, Itchy Skin System ships ready to configure and can provide targeted treatment to improve water’s effect on skin comfort without altering safety or compliance.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-08-21. 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 Hardness, Ca, Mg in the 112SDGV aquifer (Marquette County): 3 results from 2 wells, median 216.0 mg/L, range 97.4-218.0 mg/L; none above any federal threshold