TDS, or Total Dissolved Solids, is one of the most important parameters to understand when it comes to water quality. This guide will help you understand what TDS is and why it matters for your health.
What is TDS?
TDS refers to the total concentration of dissolved substances in water. These include minerals, salts, metals, and organic matter. TDS is measured in parts per million (ppm) or milligrams per liter (mg/L).
Common Sources of TDS
- Natural minerals from rocks and soil
- Agricultural runoff (fertilizers, pesticides)
- Industrial waste
- Sewage contamination
- Urban runoff
TDS Levels and Safety
**0-50 ppm**: Very low, may lack essential minerals **50-150 ppm**: Ideal for drinking, good mineral balance **150-300 ppm**: Acceptable, still safe for consumption **300-500 ppm**: Fair, may have slight taste issues **500-1000 ppm**: Poor, not recommended for drinking **Above 1000 ppm**: Unacceptable, not safe for consumption
How to Measure TDS
You can measure TDS using a digital TDS meter, which is inexpensive and easy to use. Simply dip the meter into the water sample and read the value on the display.
Why TDS Matters for Health
While some dissolved minerals are beneficial (calcium, magnesium), high TDS can indicate the presence of harmful substances like lead, arsenic, or nitrates. Consistently high TDS water can lead to:
- Kidney problems
- Digestive issues
- Skin irritation
- Scale buildup in appliances
How RO Reduces TDS
RO purifiers are specifically designed to reduce TDS levels. They can reduce TDS by 90-95%, bringing even hard water to safe drinking levels. iDrink RO purifiers come with TDS controllers to maintain optimal mineral balance.
Not sure about your water's TDS level? Contact iDrink for a free water quality test and personalized purifier recommendation!