Safe drinking water is a necessity for every home. Reverse Osmosis (RO) water purifier provides us with clean and safe water, which also protects us from waterborne life-threatening diseases. Amongst all the water purifier technologies, RO water purification is the most trustworthy. If your home/office has high TDS (Total Dissolved Solids) water, then the best choice would be to use an RO water purifier.
Most of the RO purifiers discard 75% water during the distillation process. The waste water from RO purifiers surpasses the amount of water that is actually filtered by around three times. While RO water purifiers offer reliable water purification, they result in excessive wastage of water. As there is a high level of contamination and dissolved solids in the discarded water, it cannot be used for drinking or bathing purposes.

The water also tends to comprise of inorganic salts and organic matter in variable quantities that add to its unusable quality.
Membrane technology of ROs requires extra water to clean the filter which leads to excess wastage. As there is a high content of dissolved solids, the water becomes contaminated and unsuitable for drinking. The percentage of waste water varies according to the make & model of the RO purifier being used.

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So, should we stop using RO purification methods?

No, RO waste water can be used in numerous ways to manage the overall wastage of water.
In this blog we are sharing a few effective ways to utilize RO waste water:

1.Watering your garden:

Waste RO water can be used for watering plants to keep your garden green. It is advisable to dilute the RO waste water with the tap water as RO water contains high levels of TDS.

2. Washing your car:

Washing your car with waste RO water is an ideal use, rather than wasting clean water for the task. A single car wash requires an average of 14 liters of water which can be saved using RO waste water.

3. For mopping the floor:

Mopping the floor with the RO reject water is the perfect way to save drinking water, as floor mopping will require approximately 10 liters of water. RO water is clean water, except for dissolved impurities.

4. Cleaning utensils:

Washing utensils with RO water is a smart way to utilize RO waste water. Keep the water in a separate tank and use it to clean the utensils. It is advisable to mix the discarded RO water with normal water as RO waste water contains dissolved salts, therefore this can leave salt stains on your utensils.

5. Flushing purpose:

You can use the RO waste water for flushing your toilet, as every single flush requires around 6 liters of water. Regularly monitor your toilet seat for discoloration on the porcelain surface. With regular checkups, the possibility of discoloration and salt deposits reduces.


It is advisable to check the TDS level of the wastewater before reusing it. One can save a large amount of water when utilizing RO wastewater.
Your RO water purifier is the first line of defense when it comes to your daily water requirements. It is vital that your RO system is properly maintained and serviced at regular intervals.

Therefore, if your RO is due for maintenance, download the “OneDios” app and generate a service request in a few clicks. The OneDios app provides an end to end solution for all your service and repair related issues, without having to call various people or seek phone numbers. It also keeps a track of your previous service history. Open the One Dios app and schedule the subsequent service of your RO on priority. We provide AMCs of numerous brands like Acromec RO, AO Smith RO, Livpure RO, Aqua Fresh RO, Aqua Guard RO, Eureka Forbes RO etc. OneDios now covers over 1350 cities in India.

Where to visit for the RO service center?

Visit OneDios

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