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Minimum TDS for Drinking Water A Complete Guide

Minimum TDS for Drinking Water A Complete Guide
Feb. 25, 2025 BLOGS

Water is an essential part of life, and its quality plays a crucial role in maintaining health. One of the key factors determining water quality is TDS (Total Dissolved Solids), which measures the concentration of dissolved substances in water. But what is the minimum TDS for drinking water? This article explores the importance of TDS levels, their effects on health, and how to measure and maintain the ideal TDS in drinking water.

What is TDS in Drinking Water?

TDS stands for Total Dissolved Solids, which includes minerals, salts, metals, and other organic and inorganic substances present in water. These elements come from natural sources, human activities, and water treatment processes.

Common Components of TDS:

  • Calcium

  • Magnesium

  • Sodium

  • Potassium

  • Bicarbonates

  • Sulfates

  • Chlorides

  • Organic Matter

The presence of these dissolved solids affects the taste, quality, and safety of drinking water.

Ideal TDS Range for Drinking Water

The Bureau of Indian Standards (BIS) and the World Health Organization (WHO) provide guidelines for TDS levels in drinking water:

  • Less than 50 ppm: Poor taste and lacks essential minerals.

  • 50-150 ppm: Acceptable for drinking but may lack essential minerals.

  • 150-300 ppm: Ideal range with good taste and necessary minerals.

  • 300-600 ppm: Still acceptable but may taste slightly salty.

  • 600-900 ppm: Can be consumed but not recommended.

  • 900-1200 ppm: Not advisable for regular drinking.

  • Above 1200 ppm: Unfit for consumption.

Thus, the minimum TDS for drinking water should be at least 50 ppm to ensure it contains essential minerals for good health.

Effects of Low and High TDS on Health

Low TDS Water (<50 ppm)

  • Lack of Essential Minerals: Deficiency in calcium, magnesium, and potassium can lead to bone weakness, fatigue, and other health issues.

  • Flat Taste: Water with very low TDS lacks a refreshing taste.

  • May Not Hydrate Efficiently: The absence of minerals affects hydration efficiency.

High TDS Water (>600 ppm)

  • Hard Water Problems: High TDS levels may cause scaling in appliances, pipes, and utensils.

  • Salty or Bitter Taste: Excessive salts make water unpalatable.

  • Health Risks: High levels of certain dissolved solids like arsenic, fluoride, and nitrates can cause health issues.

How to Measure TDS in Drinking Water?

Measuring TDS is easy with digital meters that provide instant readings.

Recommended TDS Meters:

  1. Digital TDS Meter for Domestic Use

  2. Industrial TDS and pH Meter

  3. Ocean Star Imported TDS Meter

  4. Ocean Star TDS and EC Meter

  5. Ocean Star Digital pH Tester

These devices help in monitoring TDS levels accurately.

How to Maintain Optimal TDS Levels in Drinking Water?

There are several methods to control and optimize the TDS levels in your drinking water:

1. Use a TDS Meter

Regularly check your water quality using a digital TDS meter.

2. Choose the Right Water Purifier

  • RO (Reverse Osmosis) Systems: Reduce TDS by filtering out excess dissolved solids.

  • UV Filters: Kill bacteria but do not remove minerals.

  • Mineral Cartridges: Add essential minerals back to purified water.

3. Mix RO Water with Mineral Water

If RO water has very low TDS, mix it with natural mineral water to maintain essential nutrients.

4. Boiling and Filtering

Boiling helps in eliminating some contaminants but does not reduce TDS significantly.

5. Water Softening Methods

For high TDS levels, softening techniques like ion exchange can help in reducing the hardness of water.

Conclusion

Maintaining the right TDS level in drinking water is crucial for good health. The minimum TDS for drinking water should ideally be 50 ppm or higher to ensure essential minerals are present. Using a TDS meter helps in monitoring and maintaining safe water quality.

For accurate measurement, you can use Ocean Star Imported TDS Meter or TDS & pH Meter.

Ensure your drinking water has a balanced TDS level to stay healthy and hydrated!