The Importance of Restoring Minerals to RO Water
Reverse osmosis technology is highly effective at purifying water, but its ultra-fine membrane removes virtually all dissolved solids, including beneficial minerals like calcium, magnesium, and potassium. Consuming this demineralized water over long periods can have adverse health effects. The water becomes slightly acidic and lacks the electrolytes necessary for proper bodily function. Remineralizing your RO water not only improves its health profile but also enhances its taste, as pure, demineralized water often has a flat or bland flavor.
Why You Need to Increase TDS
- Essential Minerals: Minerals like calcium and magnesium are crucial for bone health, nerve function, and blood pressure regulation.
- pH Balance: Demineralized water is slightly acidic, whereas remineralized water is typically more alkaline, helping to balance the body's pH.
- Improved Hydration: Electrolytes aid in cellular hydration, making remineralized water more effective at replenishing fluids.
Natural Methods to Increase TDS of RO Water
Use Mineral Drops or Concentrates
One of the simplest and most precise ways to remineralize RO water is by adding mineral drops. These are highly concentrated solutions of trace minerals harvested from sources like ancient sea beds or lakes. They are designed to be added a few drops at a time to a glass or pitcher of water. A major advantage of this method is the control it gives you over the final TDS level, which can be monitored with a simple TDS meter.
Install an Inline Remineralization Filter
For a more automated and long-term solution, an inline remineralization filter can be added to your existing RO system. This filter is installed after the RO membrane and contains natural mineral media, such as calcite or other mineral-rich compounds. As the purified water passes through, it slowly dissolves the minerals, adding them back into the water stream before it reaches your faucet. This is a "set-it-and-forget-it" approach that ensures every drop of water is properly remineralized.
Utilize Mineral Stones or Balls
Using mineral stones, ceramic balls, or coral sand is another natural and passive method. These can be placed in a glass pitcher or dispenser filled with RO water. Over several hours, the minerals will naturally leach into the water. Common types include Maifan stone, volcanic mineral balls, or alkaline ceramic balls. While this method requires patience, it is a very hands-off and aesthetically pleasing way to enhance your water's mineral content.
Add a Pinch of Mineral-Rich Salt
Adding a tiny pinch of high-quality mineral salt, such as Himalayan pink salt, to a gallon of RO water is a quick DIY fix. Himalayan salt contains dozens of trace minerals. However, caution is advised, as adding too much can make the water taste salty. This method is best for occasional use and requires careful measurement to avoid over-salting your water.
Comparison of Remineralization Methods
| Method | Cost | Ease of Use | Control Over TDS | Long-Term Solution | Taste Impact |
|---|---|---|---|---|---|
| Mineral Drops | Low-Medium | High | Excellent | Requires Regular Addition | Can be strong if overused |
| Inline Filter | Medium-High | Low (Once Installed) | Moderate | Yes (Requires Replacement) | Very Natural |
| Mineral Stones | Low | Medium | Low | Yes (Requires Replacement) | Minimal |
| Mineral Salt | Very Low | High | Poor (Difficult to dose) | No (Manual Dosing) | High if overused |
Creating a Balanced Mineral Profile
To achieve a balanced mineral profile, you can combine methods or choose the one that best fits your lifestyle. When using drops or stones, focus on sources that contain a wide range of trace minerals, including magnesium, calcium, and potassium. These are the most critical minerals often lost during the RO process. For those seeking maximum convenience, an inline remineralization filter provides a consistent, hands-off approach. It is recommended to test your water's TDS after implementing any of these changes to ensure you are within the desired range. The World Health Organization's recommendation for magnesium and calcium content in drinking water is a good guideline to follow for your health https://www.who.int/publications/i/item/9789241595101.
Conclusion
Restoring essential minerals to your RO water is a simple yet powerful step towards better health. Whether you choose the precise control of mineral drops, the automation of an inline filter, the patience of mineral stones, or the quick fix of mineral salt, there is a natural method that suits your needs. By actively increasing the TDS of your water, you transform it from a demineralized liquid into a truly healthy, hydrating beverage that supports your body's overall wellness. The key is to find a balance that works for you and your family, ensuring your drinking water is both pure and nourishing.
