Autotrol Hard Water — Large Home System

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If you want to compare Kent County's hardness data to neighboring New Castle County

The U.S. Geological Survey measured hardness in Kent County's aquifer, finding a median of 60.35 mg/L across 32 samples from 16 wells. While New Castle County may have different water characteristics, direct comparisons should note that these values represent area-wide samples, not individual homes. Differences in sampling depth, well location, and time can influence readings. Avoid assuming your home’s water is harder or softer solely because of these broad-area figures.

If you're considering the number of samples and why it matters

The hardness figures come from 32 measurements collected from 16 wells between 2014 and 2019. Each well was relatively shallow, 11 to 18 feet deep, which may not reflect deeper private wells. With this sample size, we get a reasonable picture of regional groundwater hardness variability but not a precise measurement of any single home's water. A small sample per well means variations within a well over time can exist but are not captured here.

If you want to understand hardness levels in the context of federal standards

Hardness results ranged from 10.8 to 284.0 mg/L calcium carbonate equivalent, with a median at about 60 mg/L. None of these results exceed any federal health-based standard because no such limits for hardness exist; hardness is not a contaminant regulated for health safety. Instead, hardness impacts taste, scaling, and appliance longevity. The government data indicates that the area’s water hardness varies widely but remains within a range typical for many US aquifers.

If you're a commercial or industrial user evaluating additional parameters

While residential households focus mainly on hardness to manage scaling and water feel, commercial or industrial users often need to consider flow rates, total water volume, and treatment system capacity. They might also require monitoring of other water chemistry aspects that affect equipment or processes beyond hardness. These factors go beyond government hardness sampling and require specialized testing and system design considerations.

If you want to consider plumbing materials and system age independently of the source water

Hardness measurements reflect source water chemistry, but household plumbing introduces another variable. Older pipes may show scaling due to long-term exposure to hard water, possibly causing flow restrictions or discoloration unrelated to changes in the water source. The material—whether copper, PVC, or galvanized steel—affects corrosion potential and scale buildup. Addressing hard water solely via source treatment overlooks these plumbing-specific issues.

What test to order and how to decide

The most critical step is to have a current water hardness test performed on your home’s water supply. This will confirm how your water compares to the area's aquifer data and clarify the amount and type of treatment needed. If hardness is confirmed to be significant for your home’s water, an Autotrol Hard Water — Large Home System, which ships ready to configure, offers a proven approach. Deciding between treatment approaches should follow the water hardness test results combined with considerations of household water demand and plumbing condition.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2019-12-10. 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 aquifer (Kent County): 32 results from 16 wells, median 60.35 mg/L, range 10.8-284.0 mg/L; none above any federal threshold