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Best TDS Level for Drinking Water in India (2025 Guide) | Ideal RO TDS Chart
Oct. 7, 2025
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Best TDS Level for Drinking Water in India – Complete Guide
Drinking pure and healthy water is essential for a healthy life, but do you know what the best TDS level for drinking water in India is?
Many people think that if water is crystal clear, it’s automatically safe—but the truth is, the safety and taste of water also depend on its TDS (Total Dissolved Solids) level. The right TDS ensures a balance of minerals and good taste, while too low or too high TDS can affect your health. In this blog, we’ll explore the ideal TDS range according to Indian standards, whether 25 TDS is safe, the RO water TDS level chart, BIS and WHO guidelines, and how brands like Kent recommend the perfect TDS for drinking water. We’ll also link you to some in-depth guides for more insights.
What is TDS and Why Does It Matter?
TDS stands for Total Dissolved Solids, which are the minerals, salts, and organic matter dissolved in water.
This includes:
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Calcium
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Magnesium
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Sodium
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Potassium
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Bicarbonates
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Sulfates
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Chlorides
While some dissolved minerals are good for health, excessive amounts can be harmful. On the other hand, very low TDS means water has almost no minerals, which can make it taste flat and deprive your body of essential nutrients.
Best TDS Level for Drinking Water in India
According to the Bureau of Indian Standards (BIS):
However, for daily drinking purposes, experts and purifier brands recommend:
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50–150 ppm – Ideal TDS range for RO-purified water in India.
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150–300 ppm – Acceptable, good taste and adequate minerals.
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Above 500 ppm – Not recommended without proper filtration.
WHO (World Health Organization) considers:
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<300 ppm – Excellent
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300–600 ppm – Good
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600–900 ppm – Fair
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900–1200 ppm – Poor
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>1200 ppm – Unacceptable
RO Water TDS Level Chart
Here’s a quick guide:
| TDS Range (ppm) |
Quality |
Remarks |
| <50 |
Poor (No minerals) |
Flat taste, lacks nutrients |
| 50–150 |
Excellent |
Best for health & taste |
| 150–250 |
Good |
Still healthy with good taste |
| 250–350 |
Acceptable |
Common in many Indian homes |
| 350–500 |
Borderline |
Use RO with TDS controller |
| >500 |
Unsafe |
Needs treatment before drinking |
Is 25 TDS Safe for Drinking Water?
If your TDS is 25 ppm, it means the water is almost pure—like distilled water.
While it may be free of most impurities, it lacks essential minerals your body needs.
Such low TDS water may not be harmful in the short term, but long-term consumption can cause mineral deficiencies and a bland taste.
For more detailed insights, check our blog:
👉 Is 25 TDS Safe for Drinking Water?
Minimum TDS for Drinking Water
While there is no fixed official lower limit, most experts recommend 80 ppm or more for good taste and essential minerals.
If your RO system produces water below 50 ppm, use a TDS controller or mineral cartridge to reintroduce essential minerals.
Learn more here:
👉 Minimum TDS for Drinking Water
Normal TDS of Drinking Water in PPM
In India, normal TDS levels for municipal water or groundwater vary from 100 to 500 ppm depending on:
For example:
Kent RO TDS Level Recommendations
Kent RO, a leading water purifier brand, recommends:
Why the Right TDS Level is Important
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Taste: Balanced TDS gives water a fresh taste.
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Mineral Content: Essential for bone health, heart function, and metabolism.
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Purification Efficiency: Ensures water is clean but still nutritious.
Tips to Maintain Ideal TDS in RO Water
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Use a TDS Meter: Test water regularly.
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Adjust RO TDS Controller: Maintain between 80–150 ppm.
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Replace Filters on Time: Dirty filters can alter TDS.
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Use Mineral Cartridge: Adds back lost minerals.
When to Use RO Purification
RO systems are recommended when:
If TDS is already low (<300 ppm), you may only need UV or UF purification.
Final Verdict – Best TDS Level for Drinking Water in India
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Ideal Range: 50–150 ppm (for RO water)
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BIS Standard: Up to 500 ppm
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WHO Standard: Below 300 ppm is excellent
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25 ppm water: Safe but not ideal long-term
For maintenance, servicing, and adjustments to keep your purifier’s TDS in check, you can explore our complete RO service guide:
👉 Best RO Service Near Me – Top RO Purifier Maintenance & Repair Providers
FAQ – Best TDS Level for Drinking Water in India
Q1: Best TDS level for drinking water in India Quora?
Most answers suggest 50–150 ppm for RO-treated water.
Q2: Is 25 TDS safe for drinking water?
Safe, but not recommended for long-term use due to lack of minerals.
Q3: Drinking water TDS limit in India?
BIS recommends up to 500 ppm.
Q4: Minimum TDS for drinking water?
Around 80 ppm is good for health.
Q5: Normal TDS of drinking water in ppm?
Generally 100–500 ppm depending on the source.
Conclusion:
The best TDS level for drinking water in India is one that ensures purity, good taste, and essential minerals. For most homes, keeping it between 50 and 150 ppm is ideal. Always monitor TDS levels and maintain your purifier to ensure healthy, tasty, and safe drinking water every day.
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