Understanding Local Water Characteristics
The groundwater in Duval County, Florida, sourced from the 120FLRD aquifer, has been extensively sampled by the U.S. Geological Survey. Over 60 samples taken from 13 wells between 2010 and 2014 reveal a median hardness level of 324 mg/L, with measurements ranging from 169 mg/L to as high as 835 mg/L. These figures reflect concentrations of calcium and magnesium minerals, which contribute to hard water conditions.
Importantly, none of these samples exceeded any federal health-based thresholds, meaning this is not a safety-related issue but one focused on water quality and household impacts related to mineral content.
What Does Hard Water and Iron Mean for Your Home?
Hard water can cause mineral buildup on plumbing fixtures, reduce soap effectiveness, and leave deposits on dishes and laundry. In addition, iron presence—while not detailed statistically in the public data here—often coexists in groundwater of this nature and can contribute to staining and metallic tastes.
Since these samples represent an area-wide average from deep wells between 510 and 1304 feet, your household water quality might differ. To accurately size a solution, you first need to conduct a specific water test at your tap that measures hardness and iron concentration. This helps avoid over- or under-sizing equipment, ensuring the treatment system matches your exact water conditions.
Determining the Appropriate Treatment Size
Because hardness values in this aquifer span a wide range, equipment sized too small may quickly become ineffective, while oversizing can be unnecessarily costly. Ideally, a treatment system should accommodate the upper range of expected hardness to provide reliable service.
The WSP Whole House Iron & Sulfur Filter - City Water, Hard, designed with air injection iron-removal technology, offers a grain capacity of 64,000. This capacity supports managing typical hardness and iron levels found in this region. It ships ready to configure, allowing you to adapt it to your household's needs once water test results are in hand.
Next Steps for Homeowners
- Obtain a water test that specifically measures hardness (calcium and magnesium) and iron from your household supply.
- Compare these results with the local geological data to understand your position within the typical range.
- Use this information to select a treatment system capable of addressing your water’s hardness and iron content without over- or under-sizing.
Appropriate sizing ensures your water treatment solution effectively reduces hardness and iron-related issues such as staining and mineral deposits, leading to improved water quality and household convenience.
Where this information comes from
Source: USGS groundwater sampling. 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.
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