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TDS Measurement Chart: Understand Water Quality the Right Way

TDS Measurement Chart: Understand Water Quality the Right Way
May 17, 2025 ARTICLES

๐Ÿ“˜ Information Content Table

Section No. Heading Focus
1 Introduction to TDS Measurement Overview
2 What is TDS? Definition & Composition
3 Why is TDS Measurement Important? Health & Quality Reasons
4 TDS Measurement Chart TDS Ranges & Interpretation
5 Safe TDS for Drinking Water WHO & BIS Standards
6 How to Measure TDS Tools & Techniques
7 TDS in Different Water Sources Natural Water vs Tap/RO
8 How to Control TDS Levels Tips & Methods
9 TDS Measurement and RO Purifiers Relevance in Domestic Use
10 FAQs on TDS Measurement Answers to Common Questions
11 Final Thoughts Conclusion & Takeaways

1. โœ… Introduction to TDS Measurement

Water quality has become a serious concern in both rural and urban households. Among various metrics, TDS measurement is a simple yet powerful way to assess how pure your drinking water is. Whether you're using groundwater, borewell, or RO water, knowing the TDS can help you make informed choices.


2. ๐Ÿ’ง What is TDS?

TDS stands for Total Dissolved Solids. It represents the combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular suspended form.

Components of TDS

  • Calcium

  • Magnesium

  • Sodium

  • Potassium

  • Bicarbonates

  • Chlorides

  • Sulfates

  • Heavy metals (in some cases)


3. โ“ Why is TDS Measurement Important?

Health:

Excessive or insufficient TDS levels can impact the taste and health quality of drinking water.

Appliance Protection:

High TDS can clog filters and damage your RO system over time.

Industrial Use:

In industries, TDS measurement is crucial for processes like chemical manufacturing, food processing, and pharmaceuticals.


4. ๐Ÿ“Š TDS Measurement Chart

Here’s a TDS chart to help you understand water quality at different levels:

TDS Range (mg/L or ppm) Water Quality Suitability
0 – 50 ppm Extremely low minerals Not suitable for drinking
50 – 150 ppm Very soft water Good for health (with minerals added)
150 – 300 ppm Ideal drinking water Recommended
300 – 500 ppm Acceptable Still suitable for drinking
500 – 900 ppm Poor quality Not ideal for drinking
900 – 1200 ppm Very poor Needs treatment
>1200 ppm Unacceptable Avoid consumption

๐Ÿ’ก Note: RO purifiers usually bring TDS down to 50–150 ppm, ideal when paired with mineralizers.


5. ๐Ÿงช Safe TDS for Drinking Water

According to the Bureau of Indian Standards (BIS) and World Health Organization (WHO):

  • Ideal TDS: 150 – 300 ppm

  • Maximum permissible limit: 500 ppm

Too low TDS can lead to mineral deficiency, while high TDS may cause health problems like kidney stones or metal toxicity.


6. ๐Ÿ› ๏ธ How to Measure TDS

1. Digital TDS Meter

  • Most common and easy method

  • Portable, affordable

  • Insert into a glass of water, and it gives instant ppm reading

2. TDS Measurement Kits

  • Lab-based kits for industrial water testing

  • Measures comprehensive mineral presence

3. Lab Testing

  • High-accuracy

  • Recommended for commercial use and water treatment plants

Buying Tip:

You can buy a good-quality TDS meter on platforms like Romegamart.com and other water purifier websites.


7. ๐ŸŒŠ TDS in Different Water Sources

Water Source Average TDS Range
Rainwater 10 – 50 ppm
RO Water 20 – 150 ppm
Tap Water 150 – 500 ppm
Groundwater 300 – 1000+ ppm
Borewell Water 500 – 1500+ ppm
River Water 100 – 400 ppm

RO water purifiers are essential when TDS > 300 ppm, especially in borewell and industrial areas.


8. ๐Ÿ”ง How to Control TDS Levels

When TDS is Too High:

  • Use a Reverse Osmosis (RO) purifier

  • Activated carbon filters help remove organic compounds

When TDS is Too Low:

  • Use a TDS controller or mineral cartridge

  • Add mineralizers to RO systems

Bonus Tip: RO + UV + UF filters offer multi-stage purification for all water types.


9. ๐Ÿ’ก TDS Measurement and RO Purifiers

TDS measurement is crucial when choosing the right RO purifier for your home or office.

Popular RO Options:

These systems let you adjust TDS output based on source water and personal preference.


10. FAQs on TDS Measurement

Q1: What is the best TDS level for drinking water?

Answer: Between 150–300 ppm is ideal.

Q2: Can I drink 0 TDS water?

Answer: Not recommended. It lacks essential minerals.

Q3: Is high TDS harmful?

Answer: Yes, it may cause health issues if above 900 ppm without treatment.

Q4: Do all RO systems reduce TDS?

Answer: Yes, RO systems are designed to reduce TDS and improve taste and safety.

Q5: What affects TDS levels?

Answer: Local geology, pipelines, source water, and storage methods.


11. ๐Ÿ Final Thoughts

Whether you're a homeowner or industrial user, TDS measurement is a critical first step toward safe and healthy water. Understanding what TDS means, how to measure it, and what levels are safe allows you to choose the right RO purifier or water filtration system.

By referring to the TDS measurement chart, you can instantly determine if your water needs treatment or not.


๐Ÿ”— Useful Links for TDS Control & Water Purification