share
GENERAL
Minimum TDS for Drinking Wate
Oct. 7, 2025
214 Views
Ideal TDS Level for Drinking Water (2025 Updated Guide)
Quick Answer: The ideal TDS level for drinking water is 150–300 ppm. Water below 50 ppm is too pure and lacks essential minerals, while water above 500 ppm may contain harmful salts and contaminants.
Maintaining the right TDS level ensures good taste, proper hydration, and better health.
🔍 What is TDS in Drinking Water?
TDS (Total Dissolved Solids) refers to the combined amount of organic and inorganic substances dissolved in water, such as:
-
Minerals: Calcium, Magnesium, Potassium, Sodium
-
Salts: Bicarbonates, Chlorides, Sulfates
-
Metals: Iron, Lead, Copper (in contaminated water)
👉 How is TDS measured?
TDS is measured in ppm (parts per million) or mg/L using a digital TDS meter.
⚡ Why is TDS Important for Drinking Water?
Many believe “the lower the TDS, the purer the water.” But that’s not always true.
Too low TDS (<50 ppm) means water is free from impurities but also lacks minerals, while too high TDS (>500 ppm) can cause health risks.
Here’s why TDS balance matters:
✅ Taste
✅ Health
✅ Appliance Longevity
🌍 Recommended TDS Levels (WHO, BIS, EPA 2025)
| Organization |
Recommended TDS Range |
Notes |
| WHO (World Health Organization) |
300 ppm or below |
Water below 100 ppm may lack minerals |
| BIS (Bureau of Indian Standards) |
50–500 ppm |
Ideal for Indian households |
| EPA (US Environmental Protection Agency) |
Up to 500 ppm |
Above this, water is unsafe |
📊 Drinking Water TDS Level Chart (2025)
| TDS Level (ppm) |
Water Quality |
Suitability |
| Below 50 |
Poor ❌ |
Lacks minerals, not ideal long-term |
| 50 – 150 |
Acceptable ⚠️ |
May need remineralization |
| 150 – 300 |
Ideal ✅ |
Best balance of taste & health |
| 300 – 500 |
Safe 👍 |
Still drinkable but heavier taste |
| 500+ |
Unsafe ❌ |
May contain harmful salts/metals |
⚠️ What Happens If TDS is Too Low?
Drinking water with TDS below 50 ppm can cause:
-
❌ Mineral Deficiencies – Lack of calcium & magnesium
-
❌ Electrolyte Imbalance – Fatigue, cramps, weakness
-
❌ Long-Term Risks – Bone and heart health issues
💧 How to Maintain the Ideal TDS Level?
👉 If your water TDS is too low (<50 ppm):
-
Add a mineral cartridge in your RO purifier
-
Mix RO water with normal tap water (only if safe)
-
Use UV/UF purifier instead of RO (if source TDS <300 ppm)
-
Regularly check with a TDS meter
👉 If your water TDS is too high (>500 ppm):
🛠 Best Water Purifiers Based on TDS Level
| TDS Range (ppm) |
Recommended Purifier |
| 50 – 150 |
UV / UF Purifier |
| 150 – 300 |
RO + UV Purifier |
| 300 – 500 |
RO + UV + Mineralizer |
| 500+ |
Advanced RO Purifier |
❓ Frequently Asked Questions (FAQs)
Q1: What is the minimum TDS for drinking water?
👉 At least 50 ppm to ensure essential minerals are present.
Q2: Is low TDS water harmful?
👉 Yes. Below 50 ppm, long-term use can cause mineral deficiency.
Q3: What is the best TDS range for drinking water?
👉 150–300 ppm (balanced taste + minerals).
Q4: How to check TDS level?
👉 Use a digital TDS meter—cheap & widely available.
Q5: Does boiling reduce TDS?
👉 No. Boiling kills germs but does not reduce or change TDS.
✅ Final Conclusion
🚰 To ensure safe, healthy water:
-
Keep TDS between 150–300 ppm for best taste & mineral balance.
-
Regularly test your water with a TDS meter.
-
Use the right purifier (RO, UV, UF, or combination) based on source water.
💙 Remember: Mineral-rich water is not just safe—it’s essential for long-term health.
Also Read,
Also Know:
share Share now
All Services
Service Experts
IT Service
Explore Travel
Gym
Products
Vouchers & Deals
Blogs
Hotels
Spa
Support