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Background on Aquifer 110QRNR and Water Delivery

In LaPorte County, Indiana, many residential wells draw water from the shallow aquifer designated as 110QRNR, typically between 10 and 30 feet deep. Water from these wells reaches household taps after filtering through soil and rock layers, carrying dissolved minerals and substances along the way. Understanding local measurements of total dissolved solids (TDS) helps guide well water treatment decisions.

1. Clarifying the Significance of Measured TDS Levels According to Federal Standards

TDS levels in local wells mostly fall below the aesthetic secondary standard of 500 mg/L

Government sampling in this aquifer shows a median TDS concentration of 295.0 mg/L, with occasional measurements ranging up to 637.0 mg/L. The secondary standard at 500.0 mg/L is a guideline for taste, staining, and corrosion but not a health safety limit. Exceeding this threshold in one sample does not imply unsafe water.

A detection indicates measurement but not a problem

All 157 samples tested showed detectable TDS. Detection means the substance is present at some level but alone does not establish a water quality issue requiring treatment.

2. Interpreting 'Detected,' 'Median,' and 'Range' in the Sampling Record

'Median' describes the middle value in the dataset, not an average of your well

The 295.0 mg/L median refers to the midpoint across all samples in the aquifer region, not any single well.

'Range' shows variability across wells and times

The TDS range from 0.3 to 637.0 mg/L highlights variations depending on depth, location, and sample timing but does not specify individual well conditions.

3. How Sample Depth and Well Type Affect Expected Water Quality

Samples from shallow wells typically represent water quality near the surface

Since samples were from wells 10 to 30 feet deep, deeper wells might have different water characteristics needing separate testing.

Variations can occur across aquifer zones and geological formations

Different parts of aquifer 110QRNR may hold water with differing dissolved solids, so local testing helps clarify individual well profiles.

4. Information to Gather Before Considering Treatment Options

Have your well water tested for TDS concentration and range

Only direct testing of your water supplies definitive data to assess if treatment is needed.

Note well depth, age, and water usage patterns

These details impact water quality trends and system sizing.

Identify specific concerns such as taste, staining, or equipment buildup

This helps tailor treatment to your household’s needs.

5. Sample Size and Wells Behind the Data and Its Implications

Data represents 157 samples from 5 wells over four years

This sample size provides a reliable regional overview but cannot substitute for your well’s individual test results.

Temporal sampling over multiple years captures seasonal and yearly variation

Consistent measurement across years lends credibility to the typical TDS levels reported.

6. Additional Considerations for Commercial Well Users

Commercial water use may require higher capacity or specialized treatment

Households generally have simpler needs compared to industrial settings that might place larger demands on water quality.

Monitoring regulatory compliance and operational impacts becomes more complex

Businesses should review legal requirements beyond residential standards.

Closing Notes: What This Regional Data Does Not Tell You

Regional groundwater sampling provides valuable context but does not determine the exact quality of your specific well water. Detection of TDS and occasional exceedance of the aesthetic guideline in the area do not establish a health risk nor mean treatment is mandatory. Testing your own water is the only way to know if levels warrant intervention.

For residential users experiencing elevated dissolved solids, the Fleck Complete Well System (grain capacity 32,000) ships ready to configure to address total dissolved solids by reducing them at the point of use. It offers a documented solution tailored to household well water treatment needs when testing confirms the necessity.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2026-05-13. 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 Total dissolved solids in the 110QRNR aquifer (LaPorte County): 157 results from 5 wells, median 295.0 mg/L, range 0.3-637.0 mg/L; 1 above an AESTHETIC secondary standard only (secondary standard 500.0 mg/L (aesthetic)) - not a health finding