How Calcium and Magnesium Enter Hillsborough County’s Aquifer 112NRSD Groundwater
Calcium and magnesium are naturally occurring minerals that dissolve into groundwater as rainwater and surface water seep through soil and rock layers in Hillsborough County’s aquifer 112NRSD. These minerals, commonly called hardness minerals, reflect the local geology rather than contamination. The measured presence of calcium and magnesium in local wells represents these natural processes rather than external pollution sources.
Household Symptoms Linked to Water Minerals and What Does Not Suggest This Issue
Households with sensitive skin may notice dryness, itching, or irritation after water contact, potentially linked to mineral content. However, these symptoms can also arise from soaps, detergents, or medical conditions unrelated to water mineral content. Persistent discomfort after bathing or handwashing, especially when prior equipment has limited improvement, may indicate a mineral-related factor. Conversely, skin reactions limited to certain products or external factors do not indicate a water mineral issue.
Sample Size and Wells Supporting the Mineral Data for Hillsborough County
The U.S. Geological Survey sampled 12 results from 11 separate wells between 2010 and 2012, with well depths ranging from 14 to 64 feet. While this is a limited dataset, it provides a snapshot of typical groundwater mineral content across the area’s aquifer 112NRSD. These samples collectively represent regional groundwater conditions rather than any individual well's specific quality.
Interpreting the Calcium and Magnesium Range Against Federal Standards
The measured calcium and magnesium concentrations ranged from 7.39 to 231.0 mg/L, with a median of 34.95 mg/L. None of these results exceeded federal standards for drinking water safety. It is important to note that detecting these minerals is expected and not a health violation. The presence of minerals within this range can influence water’s feel and may affect sensitive skin but does not indicate safety concerns under federal guidelines.
Example: What the Median and Range Mean for a Hillsborough County Homeowner
For a homeowner, the median value of 34.95 mg/L suggests moderate mineral content typically found in the local groundwater. The wide range up to 231.0 mg/L indicates variability across wells, meaning some properties may experience higher levels. Without testing your specific water source, you cannot determine your own calcium and magnesium content precisely. A focused water test is necessary to assess minerals affecting sensitive skin in your household.
Existing water-treatment equipment that cannot keep up with sensitive skin issues related to minerals may benefit from equipment designed to address these factors. The C-Series Sensitive Skin & Eczema System ships ready to configure for households requiring enhanced management of water minerals impacting sensitive skin, with a capacity of 32,000 grains to handle typical mineral loads in this region.
In summary, the government sampling record for Hillsborough County's aquifer 112NRSD shows a natural presence of calcium and magnesium within safe federal limits but with variability that may influence sensitive skin. Testing your home's water is essential to confirm these minerals' levels before considering solutions like the C-Series Sensitive Skin & Eczema System.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2012-11-14. 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 112NRSD aquifer (Hillsborough County): 12 results from 11 wells, median 34.95 mg/L, range 7.39-231.0 mg/L; none above any federal threshold

