TDS or Total Dissolved Solids is a commonly heard term, which means a concentration of dissolved particles or the solids in water. The TDS contains inorganic salts like calcium, magnesium, chlorides, bicarbonates, along with inorganic compounds which are dissolved in water. Water which tastes salty and not very palatable is likely to have a high level of TDS.
Water with high TDS levels becomes difficult to consume without purifying the water. The solids dissolved in water might not be ideal for your health and should be filtered out before it is used for consumption.
Myth - Total dissolved solvents are good for the body!
Depending on which type of salts and compounds are released in the water can one decide if the TDS level in water is good or bad for the body. A range of salts, minerals, organic compounds can make up TDS, which includes calcium, chlorides, sulphates, magnesium, potassium, carbonates, bicarbonates, amongst others. While a few of these, can provide few minerals to the body, most of these are considered harmful and hence need to be purified before consuming water.
Myth - High TDS level water is good for consumption!
WHO states the acceptable range for the TDS level of water can be 300 parts per million (ppm), for it to be suitable for a human to consume water. Water with a TDS level above 300 ppm, though not harmful, may not be consumable as it can taste salty and can contain a high concentration of minerals. TDS level impacts the colour, odour, and taste of water.
Water beyond 300 ppm would require an additional RO technology for purifying the water. The RO water purifiers use special membranes which hold back certain dissolved solids, to give palatable, sweet tasting water. Water which shows a TDS level beyond 1000ppm might be unsafe for human consumption. As per the WHO report data, water with TDS beyond 1200ppm is said to be unacceptable.
Myth - RO Water is not good for consumption as it removes the TDS!
The RO water purifier does not completely remove the TDS but removes the excess amount of TDS from the water. Water with high TDS levels will taste saltier while water with low TDS levels will have no harmful effect on the human body. If you remove excess TDS, the RO water purifier sweetens the taste of water.
Consumption of low TDS water, naturally occurring or received from a treatment process (such as a RO device), does not result in any harmful effects on the human body. Human body’s own control mechanism regulates the mineral content of the body fluids and the discharge of different types of ions from the body of normal healthy individuals (regardless of whether drinking water is high or low on TDS). It is also evident that consumption of low TDS water by a healthy person alone cannot cause any negative impact to the human body. Several types of scientific literature and research have found no harmful effects to the human body, attributable to the consumption of low TDS water.
In all, it is thus important to know the TDS level of your source of water and then determine the best water purification method to treat water. RO water purifiers are the best solutions to purify water with high TDS levels to give you safe drinking water.