Local Aquifer Characteristics and Water Delivery
In Duval County, Florida, residential water drawn from the 120FLRD aquifer travels through deep wells ranging from 510 to 1304 feet before reaching household taps. This groundwater source contains naturally occurring minerals such as calcium and magnesium, which contribute to the water’s mineral content. Government sampling has measured these minerals consistently in multiple wells across the area, providing a reliable overview of general water characteristics in the region.
What the Measured Mineral Range Means and Does Not Mean
Sampling conducted by the U.S. Geological Survey between 2010 and 2014 examined calcium and magnesium levels in 13 wells from the 120FLRD aquifer within Duval County. The median mineral content was 324 mg/L, with values ranging from 169 to 835 mg/L. None of these results exceeded federal safety thresholds, indicating no regulatory concern from a health-based perspective. However, these measurements reflect the regional aquifer and not any individual household’s water supply. To learn one's specific water mineral content, a private test conducted for that household’s source is necessary. The data do not mean that every well falls within this range or that the minerals are absent or low in any particular home.
Comparing Duval County's Mineral Data with Neighboring Areas
Nearby counties may show different mineral profiles in their groundwater due to variations in geological formations. Comparing Duval County’s readings with an adjacent county’s measurements can reveal relative mineral levels but should not lead to assumptions about individual households. Such regional comparisons highlight broader trends in mineral presence but cannot substitute for localized testing when evaluating sensitive skin impacts or water treatment needs in a home.
Differentiating Sensitive Skin from Other Water-Related Reactions
Sensitive skin symptoms connected to water are sometimes confused with reactions caused by disinfectants or other contaminants. In Duval County's aquifer samples, calcium and magnesium minerals are measured but no chlorine or similar agents are part of this data set. Skin irritation linked to mineral content tends to involve dryness or itching, whereas disinfectant-related issues may include redness or chemical sensitivity. Understanding which symptoms relate to mineral content helps clarify when mineral-focused water management technologies are appropriate.
How Minerals Enter Groundwater in Duval County
The calcium and magnesium measured in the 120FLRD aquifer primarily come from natural dissolution of limestone and dolomite rock formations as water percolates underground. Over long timescales, this process results in the mineral concentrations detected by sampling wells. These minerals are carried into water tapped by residential wells, contributing to the overall composition but not to any known health hazard within federal safety standards.
In summary, government data for Duval County’s 120FLRD aquifer provide valuable insight into typical mineral content but do not define individual household water characteristics. Householders concerned about sensitive skin effects should pursue testing specific to their supply. When mineral management is desired, the Autotrol Sensitive Skin & Eczema System offers a technology solution configured for these regional conditions, designed to address mineral exposure without implying a health risk. This approach supports informed decisions balancing regional data with personal water needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2014-08-07. 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 120FLRD aquifer (Duval County): 60 results from 13 wells, median 324.0 mg/L, range 169.0-835.0 mg/L; none above any federal threshold
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