What the Measured Range Means Against the Relevant Federal Standard, and What It Does Not Mean
The U.S. Geological Survey sampled groundwater from five wells in Brunswick County’s aquifer 211PEED between August 2012 and May 2017 to assess hardness levels, reporting concentrations of calcium and magnesium combined. The hardness results ranged widely from 16.8 mg/L to 249.0 mg/L, with a median of 150.2 mg/L. None of these individual samples exceeded any federal regulatory threshold, making the data compliant with health-based standards.
However, this range and median only describe the area’s groundwater characteristics, not the specific water in any individual household well. Since the samples represent diverse wells at depths from 36 to 200 feet, conditions can differ significantly from one property to another. Therefore, while these values provide a useful regional benchmark, they do not define the hardness concentration you experience in your own home’s supply.
How to Compare This Area's Record With a Neighboring County's Without Overreading It
Neighboring counties often display different hardness profiles due to varying geology and aquifer characteristics. If adjacent areas show higher or lower hardness levels, these differences reflect broad regional trends rather than precise conditions at any single household. When comparing Brunswick County’s median hardness of 150.2 mg/L to a neighboring county’s results, it is important to remember these figures express groundwater quality patterns, not guaranteed water quality for individual wells.
This means you should not assume your water’s hardness aligns exactly with either county’s median or range. Instead, area comparisons serve to guide expectations and highlight potential variability rather than to confirm your personal water hardness.
A Worked Example: Reading the Record's Median and Range as a Homeowner Would
Imagine a large household considering water treatment options in Brunswick County. The median hardness value of 150.2 mg/L suggests moderately hard water is common in the area, but the range down to 16.8 mg/L implies some wells may have much softer water, while others near 249.0 mg/L indicate very hard conditions in some locations.
For a homeowner, this means testing your own water is essential to accurately determine hardness and tailor treatment accordingly. Depending on your home's actual reading within this regional range, your treatment needs could differ substantially.
What 'Detected', 'Median' and 'Range' Mean in the Sampling Record on This Page
The term 'detected' means the instrument measured the hardness constituent at or above the reporting limit in each of the six results; it does not imply any health or safety concern. The 'median' is the central value that divides the sample results into two equal halves, giving a sense of the typical hardness level among the sampled wells. The 'range' spans from the minimum detected concentration to the maximum, illustrating variability across wells.
Together, these terms describe the distribution of hardness in the area’s groundwater samples but do not convey the condition of an individual well or tap.
How the Documented Treatment Technology Removes or Neutralizes the Constituent
The Pentair Hard Water — Large Home System is designed for households with significant water demand, effectively reducing hardness levels caused by calcium and magnesium.
The system uses ion exchange technology to replace hardness ions with sodium or potassium ions, addressing common hard water challenges without introducing health-based concerns. It ships ready to configure for straightforward adaptation to large household needs.
The decision to choose this system should be based on your specific water hardness confirmed through testing, your household’s size, and your preferred operational features.
In summary, regional hardness data for Brunswick County’s aquifer 211PEED provide a helpful frame of reference but do not substitute for individual water testing. Selecting an appropriate treatment like the Pentair Hard Water — Large Home System depends on understanding your home's unique hardness level and demand requirements.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-05-08. 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 211PEED aquifer (Brunswick County): 6 results from 5 wells, median 150.2 mg/L, range 16.8-249.0 mg/L; none above any federal threshold