Government groundwater sampling by the U.S. Geological Survey in Kittitas County shows hardness, measured as calcium and magnesium concentrations, varies significantly in the local aquifer. The median hardness found in 19 wells sampled from May to August 2012 was 36.55 mg/L, with a range spanning from 3.02 to 279.0 mg/L. These figures apply to wells between 69 and 840 feet deep and represent a regional snapshot, not specific to any individual home.
Myth 1: Hardness Levels Are Steady Year-Round in the Aquifer
Analysis of the 2012 samples reveals variability in hardness across multiple months and wells. The dataset covers three months and a wide depth range, indicating that seasonal or multi-year changes can influence hardness. However, these figures do not capture full seasonal patterns beyond the sampling period. Homeowners should expect some variation over time but not assume constant conditions.
Myth 2: Symptoms in the Home Clearly Confirm Hard Water
Common hard water symptoms include mineral buildup on faucets, spots on dishes, and decreased soap lather. However, these signs alone do not definitively confirm hard water, as plumbing age or other water issues can produce similar effects. Since no individual well’s hardness is known without testing, symptoms should prompt water hardness testing from a certified laboratory to confirm the presence and level of hardness in your household water.
Myth 3: Hard Water Effects Are the Same Regardless of Household Size or Usage
Large homes typically use more water, increasing the volume of minerals passing through plumbing fixtures and appliances. This can accelerate scaling and wear on equipment. Seasonal or secondary residences may experience different hardness impacts depending on water use patterns and stagnation. Adjusting treatment capacity to household size and water demand is essential for effective hardness management.
Myth 4: The Median Hardness Figure from Area Wells Reflects What You Will Find in Your Well
The median hardness of 36.55 mg/L offers a regional benchmark but cannot substitute for testing your specific water source. The range up to 279.0 mg/L demonstrates that hardness can vary widely even within the same aquifer. Your well’s hardness might be near the median or toward either extreme, so testing is the only way to know your water’s hardness and select the right treatment.
Myth 5: The Number of Samples is Sufficient to Reliably Predict Hardness for All Wells in Kittitas County
While 19 wells form a useful sample set, this is a modest number given the aquifer’s size and geological diversity. The data provides a general understanding but limited precision for any one location. A small sample size means that individual variations might not be fully represented. Testing your own water is necessary to establish your specific condition accurately.
For large homes in Kittitas County experiencing failures in water treatment equipment due to hard water, the Fleck Hard Water — Large Home System ships ready to configure and provides a proven solution to manage mineral hardness effectively, based on the hardness concentration you determine by test.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2012-08-28. 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 (Kittitas County): 19 results from 19 wells, median 36.55 mg/L, range 3.02-279.0 mg/L; none above any federal threshold