Dry Skin Concerns in San Juan County: Understanding Local Water Quality for Better Treatment Choices

The water that supplies homes in San Juan County typically comes from the local aquifer designated 110AVMB. This groundwater source is accessed through wells generally between 35 and 68 feet deep, which feed into residential plumbing systems. Understanding the quality of this aquifer’s water is key when deciding how to address common issues like dry skin.

Why do aesthetic secondary standards differ from health-based limits when applied to water hardness?

Water quality regulations distinguish between health-based limits, which protect against contaminants that cause illness, and aesthetic secondary standards, which relate to taste, appearance, or feel of water. For the hardness components calcium and magnesium, the established federal thresholds are health-based and have not been exceeded in the San Juan County aquifer 110AVMB according to U.S. Geological Survey data. However, hardness levels can influence skin feel without implying a health risk.

What should I write down before seeking advice on water treatment for dry skin?

Before deciding on a treatment, record exact hardness levels specific to your household water supply through a water test. Government area-wide data from 229 samples in this aquifer show a median hardness of 1190 mg/L, ranging from 644 to 1750 mg/L, but your well’s hardness may be different. Note any other skin symptoms, water usage patterns, and existing treatment equipment to help tailor a solution.

How can I compare San Juan County’s water hardness with nearby counties without reading too much into the data?

Comparisons between counties or aquifers should focus on general trends rather than precise numbers, since hardness varies by well depth, local geology, and sampling dates. San Juan County’s aquifer 110AVMB shows consistently detected hardness at relatively high levels. While neighboring regions may have lower or higher median hardness, this does not directly indicate better or worse water quality for individual households.

What distinguishes dry skin caused by local water hardness from other common causes?

Dry skin linked to water hardness arises from calcium and magnesium minerals that can reduce water’s ability to rinse off soap completely, leaving residues that dry the skin. This differs from dry skin due to allergens, indoor heating, or environmental dryness. Identifying water hardness as a contributor requires testing your water and considering your skin condition timeline relative to water exposure.

How do public water system records differ from private well testing in establishing water characteristics?

Public system records provide region-wide data but do not replace private well testing for individual home water characteristics. The USGS samples noted here reflect area averages for the aquifer but cannot confirm your well’s specific levels. Personal water testing is necessary to identify your exact hardness level and other constituents before choosing the proper treatment.

To address dry skin concerns related to hardness levels like those measured in San Juan County’s aquifer, the Pentair Dry, Itchy Skin System ships ready to configure and offers a documented method to manage mineral content affecting skin comfort. Selecting such a solution based on your own water test results ensures a better match to your household’s needs.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2025-09-19. 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 110AVMB aquifer (San Juan County): 229 results from 9 wells, median 1190.0 mg/L, range 644.0-1750.0 mg/L; none above any federal threshold