What does government sampling tell me about total well water quality in Bexar County?
U.S. Geological Survey sampling from 55 wells in Bexar County’s aquifer 218EDRDA, conducted between 2010 and 2026, found hardness levels—measured by calcium and magnesium—ranging from 201 to 442 mg/L with a median of 318 mg/L. These results come from wells between 180 and 2326 feet deep. No levels exceeded federal thresholds, indicating these measurements do not signify legal violations or unsafe conditions in the area’s groundwater.
How do public system records like this differ from testing my household well water?
Public or government sampling provides a broad overview of area water quality but cannot establish the exact condition of your household’s water. Each well can vary significantly based on depth, geology, and nearby activities. Only a laboratory test of your private well water can determine your specific hardness levels or other constituents. Public records serve as guides, not individual diagnoses.
What should I consider if my household is large, or if I own a second or seasonal property?
Larger households and seasonal residences often have different water consumption patterns that can affect treatment needs. The total well water hardness measured regionally gives a basis for sizing treatment capacity, but daily water use volume varies widely. Adjusting treatment capacity to match household demand ensures consistent water quality and system longevity.
How does water treated by the Autotrol Total Well Chlorination System differ at the tap?
Once water passes through the Autotrol Total Well Chlorination System, which ships ready to configure and has a grain capacity of 32,000, it experiences a reduction in hardness and improved quality by controlling scale and related issues typical of total well water. This system addresses mineral impacts documented in Bexar County data, providing treated water that is more manageable for household use and appliances.
What seasonal or multi-year variations appear in the regional water quality record?
The USGS data from 2010 through mid-2026 show a consistent presence of hardness in all samples with fluctuations within the 201 to 442 mg/L range. Variations can reflect changes in groundwater flow, recharge rates, or environmental conditions. Understanding this range supports anticipating changes in water treatment needs over time, particularly for private wells influenced by local factors.
How can I distinguish total well water hardness concerns from other common water quality issues?
Total well water hardness specifically relates to calcium and magnesium concentrations that cause scale buildup and affect water’s feel and appliance performance. This differs from other issues like iron staining or microbial contamination, which require different testing and treatment approaches. Focusing on hardness helps target treatment solutions like the Autotrol system designed to mitigate these mineral effects.
In summary, regional USGS data provide a valuable context for understanding total well water hardness in Bexar County but do not replace specific well testing. Households can use this information to evaluate if a treatment solution like the Autotrol Total Well Chlorination System fits their needs based on water use and hardness levels. Testing and informed selection are key steps toward managing total well water quality effectively.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2026-06-02. 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 218EDRDA aquifer (Bexar County): 341 results from 55 wells, median 318.0 mg/L, range 201.0-442.0 mg/L; none above any federal threshold
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.