How Jefferson County’s Aquifer 371CCCGG Compares to Neighboring Counties Without Overreading
The U.S. Geological Survey has sampled groundwater from seven wells in Jefferson County’s aquifer 371CCCGG, measuring hardness indicators calcium and magnesium. The median total hardness recorded is 348 mg/L, ranging from 220 to 526 mg/L. These figures reflect the area aquifer water and are not a direct test of your well.
Nearby counties may show different ranges or medians depending on geology and aquifer depth. When comparing, focus on median values and ranges rather than any single high or low reading. Variations between counties exist naturally and should not be taken to indicate superior or inferior water quality in absolute terms.
Seasonal and Multi-Year Variation Reflected in the 2013–2024 Sampling Period
The data span from August 2013 through June 2024 across wells ranging 155 to 445 feet deep. This multi-year window captures potential fluctuations in hardness and acidity influenced by seasonal recharge and groundwater movement.
Despite some variability in results, no sample exceeded any federal hardness threshold. This consistency suggests relative stability in water composition over the years sampled, though individual wells may differ outside this set.
Additional Questions Relevant to Commercial or Industrial Operators
Commercial or industrial users should consider flow rate impact on treatment, volume demands, and potential variability beyond household usage patterns. The area’s hardness levels inform sizing of treatment systems with a grain capacity, such as the 32,000-grain Fleck Acidic Water + Hard Water (Well) System, to manage scale buildup and acidity effects at larger scales.
Distinguishing Aesthetic Secondary Standards from Health-Based Limits
The hardness levels reported fall well below federal thresholds, which are health-based. Aesthetic secondary standards address taste, staining, and pipe scaling but do not indicate safety concerns. For example, hardness influences water feel and appliance lifespan but is not a health risk by itself.
Understanding these distinctions helps households decide on treatment priority—targeting comfort and equipment protection rather than health hazards.
The Influence of Plumbing Material and Age Independent of Source Water Quality
Variations in pipe material, age, and condition can influence how hardness and acidity manifest at taps. Older plumbing may show more scale or corrosion even if source water is consistent. These factors play a role separate from the water’s original composition, affecting maintenance and treatment needs.
Adjustments for Large Households, Second Homes, or Seasonal Properties
Larger households may require treatment systems that handle greater volume and flow. Seasonal homes might see different water chemistry due to changes in groundwater recharge patterns or stagnation. Factoring in these differences ensures the chosen system like the Fleck Acidic Water + Hard Water (Well) System meets actual usage without oversizing or undersizing.
This page references a sampling record of 10 hardness results from 7 wells in Jefferson County aquifer 371CCCGG, collected from 2013 to 2024 by the U.S. Geological Survey. For the original data set, visit waterdata.usgs.gov/monitoring-location/392119077514801/.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-06-13. 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 371CCCGG aquifer (Jefferson County): 10 results from 7 wells, median 348.0 mg/L, range 220.0-526.0 mg/L; none above any federal threshold
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