Dissolved Solids are a measurement of compounds like minerals, salts and organic compounds that are dissolved into water through contact with rock and other surfaces. TDS can be made up of several different types of compounds (including but not limited to): calcium, magnesium, iron, sodium chloride and sulfides (which are compounds frequently found in groundwater supplies).
What is TDS?
Measuring water TDS levels is the best way to understand your drinking water. Total Dissolved Solids are organic and non-organic sediments found in water, which contribute to a difference in the taste and appearance of water. Dissolved solids enter your water supply from a wide range of sources — old piping, run-off from road salts, pesticides, fertilisers, and more.
Where do Dissolved Solids come from?

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