How seasonal or multi-year variation shows in the record
Water quality in Grant County's aquifer 112GLCV has been monitored between July 26, 2010, and September 28, 2023. Over these more than a decade-long measurements, the total dissolved solids (TDS) levels have shown a wide range, from as low as 0.26 mg/L to as high as 1260 mg/L. This variation reflects changes that can happen naturally over seasons or years due to factors such as precipitation patterns, groundwater flow, and local land use. Recognizing this range helps homeowners anticipate fluctuations in well water composition rather than expecting a fixed level.
What 'detected', 'median' and 'range' mean in the sampling record on this page
In the 78 samples analyzed from 12 wells in the area, TDS was detected consistently, meaning all measurements registered some dissolved solids since the reporting limit was never below zero. The median TDS value is 313 mg/L, indicating that half the samples had levels above and half below this point. The range from 0.26 to 1260 mg/L represents the lowest to highest values found, showing considerable variability. These figures are area-wide indicators and do not specify the TDS content of any particular well.
How the constituent enters groundwater or the distribution system in this region
Total dissolved solids come from mineral and organic matter dissolved naturally as water moves through soil and rock layers. In Grant County, the aquifer sampled ranges in depth from 21 to 112 feet, which means water can pick up minerals based on the underlying geology. Activities such as irrigation, agricultural runoff, or industrial processes can also influence TDS levels, but the data present reflects a natural baseline rather than contamination. It is common for groundwater systems to have varying TDS concentrations depending on these factors.
What the reader should write down before asking anyone for treatment advice
Before exploring treatment options, homeowners should have their own water tested by a certified laboratory to determine exact TDS and other constituent levels in their well. Key information to note includes:
- Water test report dates and parameters measured
- Exact concentrations of total dissolved solids
- Well depth and construction details
- Any particular water quality concerns such as taste, staining, or sediment
Having this data will help in selecting treatment systems tailored to specific household needs rather than relying solely on regional data.
Which fixtures, appliances or processes are affected first and why
Elevated TDS primarily affects water taste, can cause staining, and impact some water-using appliances. Fixtures like faucets, showers, and household appliances such as dishwashers and washing machines may show early signs due to mineral buildup or residue. Additionally, water heaters can accumulate scale deposits that reduce efficiency. These impacts usually manifest before any health-based concerns, as TDS is an aesthetic consideration rather than a safety issue.
What a certified laboratory test for this constituent reports and how to read it
A certified lab test for total dissolved solids quantifies the concentration in milligrams per liter (mg/L). The report will show a numerical value along with detection limits and measurement uncertainty. Values are to be interpreted alongside secondary standards; for example, the EPA secondary standard for TDS is 500 mg/L, which relates to taste and staining but not health safety. Results above this threshold indicate potential aesthetic concerns but do not imply the water is unsafe. Homeowners should use these figures combined with personal water preferences and appliance considerations to guide treatment decisions.
What you should NOT conclude from area data
Data from Grant County’s aquifer 112GLCV represent regional groundwater samples and should not be used to assume the condition of any individual well. Detection of TDS or values above a secondary standard do not equate to a health violation or unsafe water. Treatment decisions require personal water testing. Once that is done, products such as the Autotrol Complete Well System, with a grain capacity of 32,000, can be considered as part of a tailored water management approach. This system ships ready to configure for home use and addresses the challenges identified through proper testing rather than regional assumptions.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2023-09-28. 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 112GLCV aquifer (Grant County): 78 results from 12 wells, median 313.0 mg/L, range 0.26-1260.0 mg/L; 25 above an AESTHETIC secondary standard only (secondary standard 500.0 mg/L (aesthetic)) - not a health finding
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