Many believe seasonal changes cause big swings in water quality here
In Grant County's aquifer 000OVBD, US Geological Survey data collected from 2010 through 2025 shows wide total dissolved solids (TDS) variation in sampled wells. The median TDS was 300 mg/L, while individual readings ranged from as low as 0.2 mg/L up to 1060 mg/L. This range includes measurements taken at depths between 15 and 153 feet. Such variation can reflect both seasonal shifts and multi-year trends, but it is important to note that fluctuations in TDS do not inherently indicate a health risk or water system failure.
Public water system records differ significantly from private well testing
Government sampling in this area involves multiple wells and is aimed at characterizing aquifer conditions broadly rather than assessing individual household wells. Conversely, testing your own well’s water quality is essential to understand your home's specific condition. Area data cannot replace a well-specific test because local variations can be substantial, and aquifer-wide findings only frame a general context.
Comparing Grant County’s data with neighboring counties requires care
Total dissolved solids levels in aquifer 000OVBD vary within a wider geographic context. While some nearby counties may show different median or range values, these differences should not be interpreted as direct indicators of safety or quality for your Grant County water. Geological and hydrological factors unique to each aquifer contribute to such disparities.
What the range of TDS values means in relation to federal guidelines
The U.S. Environmental Protection Agency (EPA) identifies a secondary standard for TDS at 500 mg/L, which is an aesthetic guideline rather than a health-based limit. Of 89 samples taken in this area, 24 recorded TDS levels above this aesthetic threshold. Exceeding this value may influence taste, water clarity, or cause minor staining but does not constitute a safety violation or health hazard. Residents concerned about taste or deposits may consider water treatment options designed to address these effects.
Fixtures and appliances sensitive to dissolved solids show effects first
Household water fixtures such as faucets and toilets, as well as appliances like dishwashers and water heaters, are typically where increased dissolved solids manifest impacts first. Signs include buildup of scale or mineral deposits, changes in soap effectiveness, or alterations in water appearance. Addressing these concerns helps maintain appliance efficiency and prolongs lifespan.
The breadth of data supporting these observations
The data informing this overview comes from 89 results collected from 14 different wells over 15 years, providing a broad perspective rather than isolated incidents. However, fewer samples or wells might reveal less reliable trends. Your own water testing remains the only way to obtain definitive information about your household’s water quality.
What to remember: Area data from USGS offers valuable insights into groundwater quality trends and variations in Grant County’s aquifer 000OVBD. However, these figures do not reveal the specific condition of your well water. For tailored water quality concerns, testing your own supply is essential. When aesthetic issues related to dissolved solids arise, the Fleck Complete Well System ships ready to configure, providing a documented solution designed to manage these challenges effectively with a capacity of 32,000 grains. This system can help improve water taste, reduce staining, and protect your home’s plumbing and appliances.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-09-30. 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 000OVBD aquifer (Grant County): 89 results from 14 wells, median 300.0 mg/L, range 0.2-1060.0 mg/L; 24 above an AESTHETIC secondary standard only (secondary standard 500.0 mg/L (aesthetic)) - not a health finding
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