Understanding 'Detected,' 'Median,' and 'Range' in the Aquifer Sampling Record
What 'Detected' Means in This Context
The U.S. Geological Survey recorded hardness as calcium and magnesium levels detected in all 13 samples from eight wells. Detection means these minerals were measured; it does not imply a problem or exceed any threshold.
The Median Value as a Typical Concentration
The median calcium and magnesium concentration is 77.1 mg/L, showing a middle point within the range of values observed in wells sampled between 2010 and 2019.
Range Reflecting Variation Across Wells
The range spans from 24.0 to 231.0 mg/L, capturing variation among shallower wells 10 to 24 feet deep in the area, demonstrating that mineral levels differ among water sources across New Castle County.
How Seasonal and Multi-Year Changes Appear in This Dataset
Sampling Dates Span Nearly a Decade
Samples were collected from 2010-03-16 through 2019-12-04, allowing observation of long-term changes rather than seasonal fluctuations alone.
Variability May Reflect Environmental Factors
Differences in mineral concentration over time may be influenced by natural aquifer recharge cycles and rainfall patterns, though specific seasonal trends are not detailed in this record.
Steps to Identify the Cause of Dry Skin Related to Water
Begin with Visible and Sensory Checks
Assess if skin dryness correlates with water use and whether changes in soap or bathing habits might be factors.
Consider Testing Water Directly
Since the data shows regional aquifer mineral content, testing your household water for calcium and magnesium is needed to understand personal exposure levels.
Evaluate Plumbing System as a Separate Factor
Older or corroded pipes can affect water composition at the tap, so check for water color or taste changes that could signal such issues.
Comparing New Castle County Data Without Overinterpreting
Use Median and Range, Not Single Results
Comparisons to neighboring counties’ aquifers should focus on general trends in median values and ranges, not isolated samples.
Avoid Inferring Personal Water Quality from Regional Data Alone
Each household’s water profile depends on its well or source and plumbing; regional data provide context but do not determine individual conditions.
The Impact of Plumbing Age and Material on Water Quality
Older Pipes May Influence Water Feel and Quality
Materials such as galvanized steel or iron can add elements to water that affect skin differently than source water minerals.
Pipe Condition Can Affect Mineral Interaction
Scale buildup or corrosion may concentrate or diminish minerals reaching your tap, altering how water interacts with skin.
Distinguishing Dry Skin From Related Water Issues
Dry Skin Related to Minerals Differs from Other Skin Conditions
Hard water minerals can leave residues that dry and irritate skin, unlike allergic reactions or infections that require different treatment.
Water Temperature and Soap Use Also Affect Skin
Hot water and harsh soaps may worsen dryness independently of mineral content; separating these effects is important for effective remedies.
This page summarizes U.S. Geological Survey groundwater sampling results from New Castle County’s aquifer area, based on 13 hardness measurements from 8 wells sampled between 2010 and 2019. For detailed data, see the source at waterdata.usgs.gov.
To address dry skin issues potentially linked to your water, the C-Series Dry, Itchy Skin System ships ready to configure and offers technology designed specifically to reduce mineral impacts on skin comfort.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2019-12-04. 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 aquifer (New Castle County): 13 results from 8 wells, median 77.1 mg/L, range 24.0-231.0 mg/L; none above any federal threshold