This week, you need to decide how to address total well water concerns affecting your household water system in San Juan County.
How Does Total Well Water Quality Arise in San Juan County's Aquifer 110AVMB?
Water in this region primarily comes from the 110AVMB aquifer, where government sampling of nine wells between 35 and 68 feet deep provides insight into water characteristics. The U.S. Geological Survey analyzed 229 samples from 2010 through 2025, focusing on constituents like calcium and magnesium, which contribute to total dissolved solids in the groundwater. These elements naturally enter the aquifer through geological formations and water-rock interaction over time.
What Happens If Total Well Water Quality Concerns Go Unmanaged Over Time?
If total well water is not treated when constituents such as calcium and magnesium are present at typical regional levels, households may notice changes affecting water clarity, taste, or surface residue from mineral deposits. However, the data collected in San Juan County show no samples exceeding any federal health thresholds, indicating no safety violations. Untreated total dissolved solids at levels commonly found here do not pose a health risk but can contribute to aesthetic and operational effects.
What Additional Questions Would Commercial or Industrial Users Consider That Differ from Household Needs?
Commercial or industrial operators typically assess total well water for larger volume capacities, equipment compatibility, and process-specific water quality requirements. They may need to evaluate grain capacity and chemical interactions more precisely than residential users. Households generally focus on consistent water quality and mitigating mineral build-up without the complexity of production or manufacturing standards.
How Does the Pentair Total Well Chlorination System Address Total Well Water Challenges?
The Pentair Total Well Chlorination System, with a grain capacity of 32,000, ships ready to configure for residential use. It is designed to reduce the impact of mineral constituents found in total well waters by neutralizing potential microbial contaminants that can accompany dissolved solids. While calcium and magnesium are not removed by chlorination, the system works to maintain water quality consistent with household expectations by controlling associated biological factors in well water.
What Changes for Large Households, Second Homes, or Seasonal Properties Using This Technology?
Larger households or properties with variable occupancy might require adjustment in monitoring or maintenance to ensure consistent system performance. The grain capacity supports typical household demands but users with higher water use should consider routine assessment of water quality and system condition to maintain effectiveness. Seasonal properties might also benefit from system operation protocols that address periods of inactivity or fluctuating water use.
What Should You Not Conclude from Area Water Data?
It is important not to assume your well water has the exact same concentrations or characteristics as those found in regional samples. Government data reflect area-wide aquifer conditions and do not represent any individual well's contents. Only a specific test of your well water can provide the precise details needed for tailored treatment decisions. Additionally, since no federal health thresholds were exceeded in the area data, there is no indication of unsafe conditions from total dissolved solids in San Juan County’s aquifer 110AVMB.
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
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