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What is the acceptable TDS level of drinking water?

TDS means the Total Dissolved Solids. It is the measurement to measure how much inorganic salts and small amounts of organic matter present in solution in water. There is no present data on health effects associated with the absorption of TDS in drinking-water appear to exist, but moderate level TDS is acceptable. Usually below than 1000 mg/liter is acceptable to the consumers.

Different TDS Concentrations – (For water taste)

Level of TDS parts per million (ppm) Rating
Between 50 – 150 Excellent ( For everyone )
150 – 250 Good ( for athletes)
250 – 300 Fair (Might be bad for kidneys)
300 – 500 Poor (Might be very bad for kidneys)
Above 1,200 Unacceptable

It was reported in a summary of a study in Australia that mortality from all categories of ischemic heart disease and acute myocardial infarction was increased in a community with high levels of soluble solids, calcium, magnesium, sulfate, chloride, fluoride, alkalinity, total hardness, and pH when compared with one in which levels were lower.

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Sources of Total Dissolved Solids

Some dissolved solids come from organic sources such as ;

  • leaves,
  • silt,
  • plankton, and
  • Industrial waste and sewage.
  • fertilizers and
  • Pesticides used on lawns and farms.

Dissolved solids also come from inorganic materials such as rocks and air that may contain calcium bicarbonate, nitrogen, iron phosphorous, sculpture, and other minerals. Many of these materials form salts, which are compounds that contain both a metal and a non-metal. Salts usually dissolve in water forming ions. Ions are particles that have a positive or negative charge. Water may also pick up metals such as lead or copper as they travel through pipes used to distribute water to consumers.

Finally, we can say that,

When elevated total dissolved solids are created for calcium, magnesium, and iron, it may be possible to remove by using a water softener.  This process may not reduce the total dissolved solids concentration, but reduce the aesthetic problems with the water.  When the problem is related to a higher concentration of sodium, chloride, or potassium, the primary recommendations would include a reverse osmosis system. If the problem is related to iron, manganese, arsenic, or total hardness, you may want to consider other systems.

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