When you pick up a bottle of water at the store, you might glance at the brand, the source, or the packaging — but how often do you check the TDS value on the label?
TDS, short for Total Dissolved Solids, plays a significant role in determining the taste, mineral content, and quality of drinking water. Whether you’re looking for a crisp, neutral taste or a richer mineral profile, understanding TDS can help you choose the best bottled water for your needs.
In this detailed guide, we’ll explore what TDS means, how it affects bottled water brands, common TDS ranges, how to test it yourself, and why it matters for both taste and health.
1. What is TDS in Water?
TDS measures the total concentration of dissolved substances in water, expressed in parts per million (ppm) or milligrams per liter (mg/L).
These substances include:
- Essential minerals like calcium, magnesium, potassium
- Salts such as sodium chloride
- Bicarbonates and sulfates
- Trace amounts of other inorganic or organic compounds
While most of these elements are naturally occurring, some can come from pipes, water sources, or treatment processes.
💡 Quick Note: TDS measures quantity, not type. Two waters with the same TDS number can have very different mineral compositions.
2. How Does Water Get Its TDS Level?
Water’s TDS level is influenced by its source and treatment process:
- Natural Sources
- Spring and mineral waters absorb minerals as they flow through rock and soil layers.
- Groundwater can pick up calcium, magnesium, and salts over time.
- Treatment Processes
- Purified bottled water often undergoes reverse osmosis (RO) or distillation to lower TDS.
- Some brands add minerals back for taste after purification.
- Packaging & Distribution
- Although minimal, prolonged storage and contact with bottling equipment can slightly affect TDS levels.
3. Why TDS Matters in Bottled Water
TDS affects more than just taste — it influences nutrition, appliance maintenance, and personal preferences.
A. TDS and Taste
- Low TDS (<50 ppm) – Very soft, neutral taste; often described as “flat” by some.
- Moderate TDS (50–300 ppm) – Balanced mineral profile; tastes fresh without being overpowering.
- High TDS (>300 ppm) – Rich, full-bodied flavor; noticeable mineral notes.
Some water sommeliers (yes, they exist!) even compare TDS to wine body — low TDS is like a light white wine, while high TDS is like a bold red.
B. TDS and Nutrition
- Water with moderate TDS can contribute to daily mineral intake (especially calcium and magnesium).
- Low TDS water is better for infant formula preparation or people with strict dietary needs.
- Excessively high TDS may contain too much sodium or unwanted minerals.
C. TDS and Appliances
- High TDS can cause scale build-up in coffee makers, kettles, and water dispensers.
- Low TDS water minimizes deposits and extends appliance life.
4. Common TDS Ranges in Bottled Water Brands
Different bottled water brands intentionally set TDS targets to create a consistent taste profile.
| TDS Range | Type of Bottled Water | Taste Profile | Best For |
|---|---|---|---|
| <50 ppm | Purified/Distilled Water | Neutral, flat | Baby formula, medical use, mixing with beverages |
| 50–150 ppm | Lightly Mineralized Spring Water | Crisp, light mineral taste | Everyday drinking |
| 150–300 ppm | Balanced Mineral Water | Full, rounded flavor | Pairing with meals |
| 300+ ppm | Natural Mineral Water | Strong mineral presence | Gourmet dining, mineral supplementation |
Examples from Popular Brands (Approximate Values)
- Bisleri – 120–150 ppm
- Aquafina – 20–30 ppm
- Evian – ~300 ppm
- Perrier – 400+ ppm
- Himalayan Natural Mineral Water – ~150–200 ppm
(Always check labels — values may vary by batch.)
5. How to Measure TDS of Bottled Water at Home
Testing TDS is simple and inexpensive. Here are the main ways:
A. Using a TDS Meter
- Cost: ₹300–₹1,000
- How: Dip the probe into the water and read the ppm value.
- Pros: Quick, accurate, reusable.
- Cons: Doesn’t identify which minerals are present.
B. Lab Testing
- Send a sample to a certified water testing lab.
- Provides a full mineral breakdown and safety check.
- Best for: Businesses, health-conscious buyers.
C. Taste & Feel Test
- Experienced drinkers can sometimes guess TDS by mouthfeel.
- Combine with a meter reading for a more reliable conclusion.
6. Health Implications of TDS Levels
While TDS alone isn’t a direct safety indicator, it relates to overall mineral load.
A. WHO Guidelines
- Palatable range: 50–300 ppm
- Above 600 ppm: May taste salty, metallic, or bitter.
- Above 1,000 ppm: Usually not recommended for drinking.
B. Special Health Considerations
- High Sodium Levels: Risk for hypertensive patients.
- Low TDS Water: Safe for most people but may lack beneficial minerals.
- Heavy Metals: High TDS could be a sign of unwanted contaminants — though rare in bottled water.
7. Choosing the Right Bottled Water TDS for You
Your ideal TDS level depends on:
- Taste Preference – Do you like crisp neutrality or a mineral-rich taste?
- Health Goals – Are you looking to add minerals or avoid sodium?
- Use Case – Is it for daily drinking, coffee brewing, or mixing with formula?
Practical Tips
- Check the Label – Many brands print TDS or “mineral content” clearly.
- Use a TDS Meter – A small investment for lifelong awareness.
- Match TDS to Purpose –
- Low (<50 ppm): Best for mixing drinks, babies.
- Medium (50–300 ppm): Daily hydration.
- High (>300 ppm): Occasional gourmet pairing.
8. Myths About TDS in Bottled Water
Myth 1: Higher TDS always means healthier water.
Truth: It depends on what minerals make up the TDS.
Myth 2: Low TDS water is harmful.
Truth: Low TDS is fine for most people, but long-term exclusive use may reduce mineral intake.
Myth 3: All bottled water brands have the same TDS.
Truth: TDS varies widely — even between different bottles of the same brand.
9. Final Thoughts
Understanding the TDS of bottled water brands helps you make informed choices about taste, health, and appliance care. Whether you prefer ultra-purified water or a naturally mineral-rich taste, TDS is your guide to picking the perfect bottle.
Next time you shop, don’t just look at the brand — look at the TDS number too. It’s a small detail that makes a big difference in your hydration experience.
Contact ROSP for Expert Water Testing & Solutions
📞 +91-9560654995
📧 info@roservicepoint.com
