As a water quality expert with extensive experience in the field, I have been involved in numerous projects aimed at ensuring the safety and health of communities through the provision of clean and healthy drinking water. One of the critical parameters that we consider when evaluating the quality of drinking water is the Total Dissolved Solids, or TDS. TDS refers to the total concentration of all minerals, salts, and metals that are dissolved in water. It is an important indicator of the water's purity and suitability for consumption.

The minimum level of TDS in drinking water is a topic of significant debate among scientists and health organizations. Some studies suggest that the minimum TDS should be close to 30 ppm to maintain a balance of essential minerals that are beneficial to human health. These minerals include calcium, magnesium, and potassium, which play a vital role in various physiological processes in the body.

However, it is important to note that the optimal TDS level can vary depending on the specific mineral composition of the water. For instance, water with a naturally high mineral content may require a higher TDS level to ensure that the water remains beneficial to health, while water with a lower mineral content may require a lower TDS level to avoid potential health risks associated with excessive consumption of certain minerals.

It is also worth mentioning that the Bureau of Indian Standards (BIS) has set the upper limit for TDS in drinking water at 500 ppm. This guideline is in place to prevent the consumption of water that is overly concentrated with dissolved solids, which can lead to various health issues. High TDS levels can cause gastrointestinal problems, kidney stones, and other health complications, especially in individuals with pre-existing health conditions.

It is crucial to strike a balance between the minimum and maximum TDS levels to ensure that drinking water is both safe and healthy. Water with too low TDS levels can be devoid of essential minerals, which can lead to nutritional deficiencies, while water with too high TDS levels can pose health risks due to the presence of excessive minerals.

In conclusion, while the minimum TDS level in drinking water should ideally be close to 30 ppm to maintain a healthy mineral balance, it is essential to consider the specific mineral composition of the water and adhere to the established guidelines to ensure the safety and health of the consumers.

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Having said that, the minimum TDS based on some studies should be at least close to 30 ppm - keeps the mineral levels in check. The Bureau of Indian Standards (BIS) fixes the upper limit of TDS in drinking water at 500 ppm.read more >>