When it comes to drinking water, the TDS (Total Dissolved Solids) level plays a significant role in determining its quality, taste, and health benefits. Many people ask: What is the healthiest TDS for drinking water? Is there an ideal TDS range that ensures the water is not only safe but also provides the right balance of minerals? In this blog, we’ll explore everything you need to know about TDS levels and how they affect the water you drink.
TDS refers to the total amount of dissolved solids in water, which includes minerals, salts, metals, and other organic and inorganic substances. These solids can either be naturally occurring, like minerals from the ground, or they can come from pollution and industrial activities. TDS is measured in parts per million (ppm) or milligrams per liter (mg/L).
The presence of TDS in water affects both the taste and healthiness of the water. While some level of dissolved solids is necessary for good health, too high or too low TDS levels can pose health risks or make the water less pleasant to drink.
The healthiest TDS range for drinking water lies between 150 and 300 ppm. Water in this range provides a good balance of minerals that are beneficial for the body without compromising on taste or safety.
Here’s a quick breakdown:
Low TDS (0–150 ppm): Water with this level may taste flat or bland, as it lacks essential minerals such as calcium, magnesium, and potassium. While it is technically safe to drink, it might not provide the full spectrum of minerals your body needs.
Optimal TDS (150–300 ppm): This range is considered ideal for drinking water. It contains enough minerals to improve the taste and provide health benefits without excessive salts or contaminants. It’s perfect for maintaining hydration and supporting overall health.
High TDS (300–500 ppm): Water in this range might still be drinkable but can have a strong, salty, or bitter taste. It might also contain higher levels of dissolved salts or other contaminants that could affect the flavor and safety of the water.
Very High TDS (above 500 ppm): This level indicates poor-quality water, which may have harmful contaminants like nitrates, chlorine, or heavy metals. Water in this range is not safe to drink and should be purified.
TDS levels impact more than just the taste of the water. Here’s why TDS is crucial for drinking water:
Mineral Content: Water with the right TDS level ensures that essential minerals like calcium, magnesium, and potassium are present, which are important for bone health, heart function, and overall bodily functions.
Taste: High TDS levels can make the water taste salty, metallic, or bitter, while very low TDS levels may make the water taste flat or lifeless. A balanced TDS enhances the overall flavor of water, making it more palatable.
Health Benefits: Water with moderate TDS levels can help replenish electrolytes in the body and maintain hydration. It may also play a role in regulating blood pressure and supporting digestive health.
Many people use Reverse Osmosis (RO) systems to purify their drinking water. These systems are designed to remove harmful contaminants by passing water through a semi-permeable membrane. However, RO systems also reduce the TDS level significantly, often leaving the water with a very low mineral content.
While RO water may be free from harmful chemicals, it can end up with a TDS level below 50 ppm, which some people find lacks flavor and essential minerals.
To ensure the water maintains a healthy TDS range, many RO systems include a TDS controller. A TDS controller helps balance the TDS level by reintroducing beneficial minerals into the water, ensuring it stays within the optimal range (150–300 ppm).
Adding a mineral filter after the RO system can also help maintain a healthy balance of minerals while ensuring the water remains pure.
While low TDS water (below 50 ppm) is technically safe to drink, it might not provide the minerals your body needs for long-term health. Water with very low TDS may be lacking in calcium and magnesium, which are vital for various bodily functions, including bone strength and muscle function.
Long-term consumption of water with very low TDS may lead to mineral deficiencies. It is therefore recommended to either:
Use a TDS controller in your RO system to bring the water’s TDS to an optimal range.
Drink water that contains a healthy balance of essential minerals.
To determine the TDS of your drinking water, you can use a digital TDS meter. These meters are affordable and easy to use, allowing you to check your water's TDS level quickly.
Calibrate the meter with distilled water (if necessary).
Dip the meter into a glass of water.
Read the result: The TDS level will be displayed in ppm or mg/L.
Testing your water’s TDS regularly ensures that your water purifier is working properly and providing the optimal water quality.
The best TDS level for drinking water is generally considered to be between 150 and 300 ppm. This range provides a balance of taste and minerals that supports overall health.
The healthiest TDS for drinking water lies between 150–300 ppm.
RO water typically reduces TDS levels, so it’s important to use a TDS controller to ensure the water contains beneficial minerals.
Drinking water with low TDS may lack important minerals, while water with high TDS could contain harmful substances.
For more details on TDS levels and their impact on drinking water, refer to our blog: What is the Minimum TDS for Drinking Water?.
The healthiest TDS range for drinking water is between 150 and 300 ppm, as this range ensures a good balance of essential minerals and good taste.
Water with very low TDS (below 50 ppm) is safe for short-term consumption but may lack essential minerals like calcium and magnesium, which are necessary for long-term health.
If the TDS of water exceeds 500 ppm, it may have high levels of salts and contaminants, which can make it taste bitter and be unsafe to drink.
To increase the TDS level in RO water, consider using a TDS controller or installing a mineral filter to add back the necessary minerals.
Testing your water’s TDS level once every few months is recommended to ensure that your RO system is working effectively and your water remains within the optimal range for drinking.