Overview of Aquifer 125RCCS and Groundwater Delivery
The groundwater serving New Castle County is drawn primarily from aquifer 125RCCS. This aquifer supplies water to numerous wells ranging 66 to 300 feet deep, delivering water to industrial facilities and other users. Water from these wells undergoes distribution to process systems where maintaining strict water specifications is critical.
What the Measured Range of Calcium and Magnesium Indicates
Between June 2015 and August 2024, 24 groundwater samples collected across 23 wells in the area were analyzed for calcium and magnesium, contributors to water heater scale formation. The median combined concentration was 137 mg/L, with a range spanning from approximately 1 to 250 mg/L. These measurements fall well below any federal limits for these constituents, indicating no regulatory exceedance. However, detected concentrations at this level can contribute to mineral scale in water heaters, especially in industrial process water systems where water quality affects equipment and operations.
Influence of Well Depth and Water Source Characteristics
Water characteristics vary with well depth, influencing scale potential. Deeper wells, up to 300 feet, may interact with different mineral layers affecting calcium and magnesium levels. Users should consider that these sample results represent area aquifer conditions, not their specific well. Precise treatment decisions require testing the water actually feeding the facility’s systems.
Assessing Treatment Capacity Relative to Facility Water Demand
Effective management of scale depends on sizing treatment equipment to match process water usage. Industrial facilities typically have considerable daily water requirements that must be reconciled with the treatment system’s grain capacity. For example, the Nelsen 900,000 Grain Skid-Mounted Commercial Water Softener provides substantial capacity suitable for high-demand environments. Evaluating the balance between anticipated scale-forming minerals and daily consumption guides selection of an appropriate solution.
Additional Industrial Considerations Beyond Household Use
Industrial operators face challenges beyond those of household users. Process water specifications may dictate tighter control on mineral content to prevent scale that can impair heat transfer, clog piping, or reduce equipment lifespan. Unlike simple domestic situations, industrial processes may have periodic water quality audits or specific treatment requirements that necessitate robust and reliable water conditioning technology.
Implications for Facilities with Variable or Seasonal Water Use
Facilities operating seasonally or with fluctuating water demands must consider adjustments in treatment capacity and configuration. Treatment systems should accommodate peak usage periods to maintain control over scale formation. The documented solution can be calibrated to these cycles, ensuring continuous compliance with process water quality standards throughout operational changes.
Summary and Documented Solution
Water heater scale in New Castle County’s aquifer 125RCCS is influenced by naturally occurring calcium and magnesium levels as evidenced by USGS sampling data. While concentrations are below regulatory limits, they can still affect industrial process equipment if untreated. Testing the facility’s actual water is essential for precise treatment planning. The Nelsen 900,000 Grain Skid-Mounted Commercial Water Softener is designed to address these scale challenges, offering significant capacity to meet demanding industrial water specifications and volume requirements.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-08-20. 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 125RCCS aquifer (New Castle County): 24 results from 23 wells, median 137.0 mg/L, range 1.07-250.0 mg/L; none above any federal threshold

