What Does 14 TDS Mean for Your Water?
Total Dissolved Solids (TDS) is a measure of the total concentration of inorganic salts, organic matter, and other dissolved substances in water, measured in parts per million (ppm). A reading of 14 TDS signifies that the water is remarkably pure, with a minimal concentration of dissolved solids. This is typically the result of advanced filtration processes, such as reverse osmosis (RO) or distillation, which are designed to remove nearly all dissolved particles. While purity is often associated with health, the implications of drinking water with such an ultra-low TDS level are more complex and require consideration of both the benefits and drawbacks.
The Benefits of Drinking Ultra-Pure Water
From a safety standpoint, water with an extremely low TDS reading like 14 is highly desirable. It indicates that the water has been stripped of most contaminants that can be harmful, such as heavy metals, nitrates, and chemicals. This is a significant advantage in areas where source water quality is poor. Ultra-pure water is also favored in certain applications, such as for sensitive electronics or specific laboratory processes, where even trace amounts of minerals can cause interference. For household use, it reduces the risk of scale buildup in appliances like kettles and coffee makers, extending their lifespan.
The Potential Downsides of Ultra-Low TDS Water
Despite its purity, long-term consumption of water with a TDS of 14 is not considered ideal for human health by many experts. The primary concern is the lack of essential minerals.
- Mineral Deficiency: Water with less than 50 ppm TDS lacks minerals like calcium, magnesium, and potassium that are beneficial for bodily functions. A prolonged reliance on demineralized water could potentially lead to deficiencies if not compensated for by a balanced diet.
- Flat Taste: The absence of minerals in ultra-low TDS water can result in a taste that many people describe as flat or insipid, which can reduce water intake.
- Electrolyte Imbalance: Some theories suggest that water with extremely low TDS levels could affect the body's natural electrolyte balance, though the human body is generally adept at maintaining homeostasis.
- Aggressive Nature: Water that is low in minerals is often more corrosive and can leach minerals from plumbing systems, potentially picking up unwanted contaminants over time.
Comparison: 14 TDS vs. Optimal Drinking Water
| Feature | 14 TDS Water | Optimal Drinking Water (50-150 ppm) |
|---|---|---|
| Purity | Exceptionally high, almost completely free of dissolved solids. | High, with a healthy balance of minerals removed during treatment. |
| Mineral Content | Very low, lacking beneficial minerals like calcium and magnesium. | Contains beneficial minerals that improve taste and contribute to health. |
| Taste | Often described as flat, bland, or tasteless. | Crisp, refreshing, and pleasant due to balanced mineral content. |
| Long-Term Health | Potential risk of mineral deficiencies if not balanced by diet. | Supports long-term health by providing essential minerals. |
| Best For | Laboratories, industrial applications, appliances. | Everyday drinking, cooking, and overall household use. |
What to Do if Your Water is 14 TDS
If your water measures 14 TDS, it's a strong indicator that you have a highly effective filtration system, such as a reverse osmosis unit, working well. The most practical next step is to address the low mineral content for better taste and long-term health. Many modern RO purifiers now include a 'remineralization' stage or a TDS controller that adds a controlled amount of beneficial minerals back into the water after purification. This creates a perfectly balanced product that combines the safety of high-end filtration with the health benefits and taste of mineral water. Alternatively, you can use mineral drops to enhance the water or ensure you get your mineral intake from dietary sources.
Making an Informed Decision
Ultimately, whether 14 TDS water is "good for you" depends on your priorities. For those in areas with questionable water quality, the safety assurance provided by ultra-low TDS is a significant benefit. However, for everyday consumption and optimal health, the general consensus is that a balanced mineral content is preferable. The ideal drinking water falls in the 50-150 ppm range, offering a 'sweet spot' between purity and essential mineral presence. Testing your water regularly and understanding your specific filtration system is key to making the best choice for your health and taste preferences.
Conclusion
While a TDS reading of 14 signifies exceptionally pure water free from most harmful contaminants, it is not considered the optimal TDS level for regular drinking water due to its lack of essential minerals. Long-term consumption of such demineralized water can lead to a bland taste and potential mineral deficiencies. The ideal balance lies in remineralizing this ultra-pure water to achieve a healthier and more palatable TDS range, typically between 50 and 150 ppm.
References
- World Health Organization (WHO). (n.d.). Total dissolved solids in Drinking-water. WHO Guideline, Page 3. Available at https://www.who.int/docs/default-source/wash-documents/wash-chemicals/total-dissolved-solids-background-document.pdf.
