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Understanding TDS Range in Water and How RO Water Purifiers Can Help?

Understanding TDS Range in Water and How RO Water Purifiers Can Help

Do you know that the TDS value plays a significant role in determining the quality of your drinking water? Yes, it is a measure that indicates the number of chemical compositions and contaminants present in the water. If you live in an area such as Mumbai, India where the water TDS range is high, then it’s a sign of contaminants including heavy metals. A high TDS value of your drinking water does not only affect the quality of water but has adverse effects on your overall health.

This is the reason why managing the TDS value of your water is important. Well, if you want to know what exactly TDS is and why you need to opt for effective water purification to reduce TDS levels of water, then this blog is for you!

In this blog, you will get a clear insight into the water TDS range and how water purification is the best and most effective way to achieve optimal TDS levels of drinking water. So, let’s dive in.

What is the TDS Level in Water?

TDS is referred to as “Total Dissolved Solids’, which is a measure of the total concentration of dissolved substances, both organic and inorganic in your drinking water. Here, dissolved solids can be heavy metals, minerals, cations or anions, salts, and other contaminants.

High level of TDS in drinking water is caused due to natural sources of water, industrial wastewater, sewage, urban run-offs, chemical-based treatment or even to use of chemical fertilizers in plumbing or gardening. As water is a universal solvent, it can get impurities and dissolve them within it quickly. It makes the water taste salty and bitter. 

Moreover, TDS also involves magnesium and calcium, these two minerals can lead to staining, scale formation, and water hardness. TDS levels also get elevated when huge concentrations of chloride, sodium, parasites, and hazardous elements are present in it.

Water TDS Range: What is Considered Safe?

Measuring the TDS value of water is crucial to know if the water is fit for consumption or requires purification if it has higher TDS levels. The TDS levels of water are measured by PPM (Parts Per Million).  

The water with a TDS value range between 50-150 PPM is considered excellent for drinking, 150-250 is good, 250-300 is fair, 300-500 is unsafe, and above 1200 means unacceptable.

In short, the best TDS level for drinking water ranges between 50 and 150 PPM. It is considered acceptable and suitable for human consumption.

Understanding the TDS Range in Drinking Water 

As per the Bureau of Indian Standards (BIS) – IS 10500:2012, which represents the standard for drinking water quality in India, the acceptable limit or the minimum TDS for drinking water is 500 PPM. This is essential to ensure that the drinking water you get at your home has a TDS value under 500 PPM. Also, it is important to check other parameters such as chemical and microbial parameters to ensure that the water is completely safe for consumption.

Well, the TDS value may vary depending on the source of your water. The TDS value in borewell water is commonly higher as compared to the water you get from the municipal supply in Mumbai, India. It may range between 50-2000 PPM. The groundwater may have high water TDS range from 220 to 1050 mg/L.

Effects of High TDS (Hard Water) on Health and Appliances

TDS levels are an important parameter to be considered to measure the quality of your drinking water. It can have a major impact on your health and appliances. Here is how the TDS levels can impact the quality of your water-

  • Odor and Taste

High TDS levels can cause an unpleasant odor and taste in water, making it not good for consumption.

  • Health Issues:

The elevated concentrations of hazardous elements such as arsenic, lead, and fluoride can use higher TDS values. Consuming water with such elements is harmful to your overall health.

  • Buildup and Corrosion:

High TDS levels in water can cause buildup and corrosion on your plumbing appliances, pipes, fittings, and equipment due to the presence of sulfate and chloride. This ultimately affects the plumbing efficiency and lifespan of your plumbing appliances and systems.

Role of RO Water Purifiers

RO Water purifiers play a vital role in managing TDS levels in drinking water. There is a wide range of water purification technologies available such as RO, UV, and UF. But RO (Reverse Osmosis) is the best and most effective life of all. RO purification helps to reduce the TDS level of water by passing it through a semipermeable membrane. This membrane has very tiny pores that block impurities and contaminants, and allow clean water to pass through it. If you are living in areas with high TDS levels up to 1000 PPM, then installing an RO purifier is the best option to get safe and drinkable water.

Benefits of RO Systems in Improving Water Quality 

Apart from removing pollutants such as lead, arsenic, chlorine, fluoride, and nitrates, RO offers purer and cleaner water while enhancing its taste. Homeowners who install RO water purifiers at home experience a refreshing taste of drinking water compared to normal tap water.

Best TDS Level for RO Water 

With the increase in contamination and pollution in drinking water, water purifiers have become a necessity for every household in Mumbai, India.  However, there are certain things to consider while investing in a water purifier. It is important to test the water quality and understand the TDS level. If your source of water is a borewell or groundwater with TDS ranges between 500-300 PPM, then You need an RO water purifier to clean it. 

As RO removes 99.9% of all the impurities and contaminants from water, RO is considered safer than other purification systems. RO purifiers typically reduce TDS value under 25 PPM.


What is the recommended TDS level for drinking water?

As per the BIS (Bureau of Indian Standards), the recommended TDS level for drinking water is less than 500 mg/l, while WHO (World Health Organization) recommends the TDS level should be less than 300 mg/l. According to the EPA secondary drinking water regulations, the maximum permissible limit for TDS in drinking water is 500 PPM.

The minimum TDS level of drinking water should not be less than 50 PPM. However, a low TDS level in water is considered safe for consumption, but it might lack essential minerals for better health and taste.

The best TDS level for RO water is between 50-150 PPM or less than 300 PPM.

A high TDS level in water can make it unsafe for consumption while affecting its taste and odor.

RO purifiers can remove 99.9% of impurities and contaminants from your water, and make it safe for drinking.

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