Background on Pasquotank County's Aquifer 110QRNR and Water Delivery
Pasquotank County sources much of its groundwater from the aquifer identified as 110QRNR. Water ascending from this subsurface layer is drawn via wells and conveyed to commercial facilities' taps. This water brings with it naturally occurring minerals, chiefly calcium and magnesium compounds, which influence its characteristics.
Differentiating Aesthetic Secondary Standards from Health-Based Limits Regarding Minerals
Mineral levels such as calcium and magnesium in water often fall under aesthetic secondary standards, which pertain to taste, appearance, and how water interacts with plumbing and skin. These differ from health-based limits that regulate contaminants posing direct health risks. Therefore, although mineral content may affect sensitive skin by causing irritation, it does not inherently indicate a health hazard.
Interpreting Certified Lab Tests for Mineral Content
A certified laboratory analysis of water samples from Pasquotank County's aquifer 110QRNR reports concentrations of minerals expressed in milligrams per liter (mg/L). The reported values reflect the median and range based on multiple samples but do not confirm conditions of any specific well used by a commercial operator. Positive detection means the minerals were measured; it does not imply the levels are problematic or exceed any regulatory thresholds.
Seasonal and Multi-Year Variation Evident in Recorded Data
Groundwater sampling in this area includes 10 results from a single well, collected between July 16, 2015, and March 30, 2017. Over this nearly two-year span, mineral concentrations varied from 13.2 to 30.3 mg/L, with a median concentration of 15.25 mg/L. This variation illustrates how mineral levels can change over time but stay within a moderate range.
Contextualizing Measured Mineral Ranges Against Federal Guidelines
None of the sampled mineral concentrations in the aquifer 110QRNR exceeded federal standards. These standards govern taste and appearance rather than health impacts for calcium and magnesium. Consequently, the measured range indicates typical mineral presence rather than a violation or unsafe condition.
Limitations of Sample Size and Scope in Assessment
The dataset consists of 10 samples from a single well, offering insight into mineral presence in a localized spot within the aquifer. Commercial operators considering water treatment should acknowledge this limited scope and recognize that their own well's mineral profile may differ. Comprehensive testing of the specific water source is necessary for tailored assessment.
Example Interpretation for a Commercial User Evaluating Water Quality
A commercial operator reviewing this data might note a median mineral concentration of 15.25 mg/L with variability up to 30.3 mg/L. This suggests generally moderate mineral content. Given the sensitivity of skin to mineral levels, understanding exact content via direct testing would guide treatment decisions. This record alone is a reference point rather than conclusive evidence of a problem.
Conclusions: What Area Data Does and Does Not Indicate
Area-wide mineral measurements from Pasquotank County's aquifer 110QRNR reflect typical groundwater composition without exceeding federal taste-related standards. This information does not confirm any specific water source’s impact on sensitive skin. To address sensitive skin concerns effectively, commercial operators should obtain certified mineral content analysis of their own water then consider technologies such as the Nelsen 120,000 Grain Mineral-Tank Commercial Water Softener, which ships ready to configure and can reduce minerals that may contribute to irritation.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-03-30. 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 110QRNR aquifer (Pasquotank County): 10 results from 1 wells, median 15.25 mg/L, range 13.2-30.3 mg/L; none above any federal threshold