Typical Water Test Reports List Total Dissolved Solids (TDS) in Milligrams per Liter
A laboratory report for water quality frequently includes total dissolved solids (TDS), expressed in mg/L. TDS measures the combined content of all inorganic and organic substances dissolved in water, such as minerals, salts, and small amounts of metals. It does not identify individual substances but serves as an indicator of overall water quality characteristics related to taste, staining potential, and corrosion behavior.
Which Fixtures, Appliances or Processes Are Affected First and Why
Higher levels of dissolved solids tend to show early effects on water-using appliances like dishwashers, coffee makers, and water heaters because these devices concentrate minerals through heating and evaporation. Fixtures with aerators or small openings may experience clogging or uneven flow. Additionally, laundry and fixtures may gradually show scaling or mineral deposits. Knowing TDS levels helps anticipate these impacts before visible problems arise.
How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The US Geological Survey collected 46 samples from a single well sampling aquifer 112NRSD within Orange County between May 2010 and May 2025. The median TDS was 140 mg/L with a range from 0.17 to 188 mg/L across these samples. Although these samples represent a long time period, they come from just one well, which limits how much this data can reflect all parts of the aquifer or individual private wells.
How Public-System Records Differ from Private-Well Testing in What They Establish
Government sampling like this provides broad information about the groundwater aquifer that supplies many wells in the area, but it is not a substitute for a private well’s water test. Public-system data establishes typical ranges and trends but cannot specify water quality at an individual household’s water source. Only a test of your own well water can determine your water’s exact TDS level.
The Order in Which to Rule Things Out, From Cheapest Check to Laboratory Test
Start by examining simple, visible causes that can affect water quality, like sediment buildup on fixtures or appliance performance issues. Next, review household plumbing for signs of wear or deposits. If concerns persist, arranging for a laboratory test of your own water sample is necessary to determine the specific TDS level and other parameters to guide treatment decisions effectively.
The Role of Plumbing Material and Age, Separate from the Source Water
Plumbing infrastructure can influence water quality independently of the source water. Older pipes or certain materials may contribute to discoloration, taste changes, or minor sediment presence. These effects are separate from dissolved solids in the source water and should be assessed distinctly when diagnosing water quality issues.
What You Should NOT Conclude from Area Data
The fact that the USGS sampling in Orange County's aquifer 112NRSD found TDS always below federal thresholds means there is no regulatory violation documented for this area. However, this does not guarantee your well’s water will have identical TDS levels, nor does it imply any health risk or safety problem. Private well water can vary significantly even within the same aquifer. To address your well’s quality confidently, testing your own water is essential.
For treatment of TDS-related issues in a complete well setup, the Autotrol Complete Well System ships ready to configure and offers a solution designed to handle up to 32,000 grains capacity, helping reduce the impact of dissolved solids on your home’s water quality.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-05-07. 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 112NRSD aquifer (Orange County): 46 results from 1 wells, median 140.0 mg/L, range 0.17-188.0 mg/L; none above any federal threshold
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