Water is the elixir of life, but is your RO water purifier sending precious water down the drain? While your RO provides clean drinking water, it also produces a significant amount of RO waste water, sometimes called reverse osmosis waste water. This reject water, although not suitable for drinking, is often rich in minerals and perfectly suitable for many other uses around your home. Instead of letting litres go down the drain daily, imagine putting it to good use! By learning how to manage and reuse this RO waste water effectively, you can save money on your water bill and reduce your environmental impact. Here, we mention a few practical ways to utilise the RO reject water, so let’s take a look below!
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Can RO Waste Water be Reused? Things to Keep in Mind!
Absolutely, RO water can indeed be reused, and it’s a smart way to conserve water! RO systems typically waste 3–5 litres for every 1 litre purified. When your RO purifier creates pure drinking water, it also produces RO waste water. This reject water, while not safe for direct consumption, isn’t simply “dirty” water. It contains a higher concentration of minerals and salts that were removed during the purification process. The key to reusing this water effectively lies in understanding its composition and collecting it properly.
With rising concerns about water scarcity, preventing this water from going down the drain is a significant step towards sustainability. Many homeowners are surprised by how much water is actually wasted, making efficient RO waste water collection crucial. By keeping in mind the properties of this water, you can safely reuse RO waste water for various household purposes, turning a perceived waste product into a valuable resource.
Also Read: TDS For Drinking Water: How Much TDS Is Healthy In Water?
How to Use Waste Water from RO? 6 Ways to Try at Home
Your RO system is a brilliant asset for clean drinking water, but are you truly maximising its value? A common drawback is the significant amount of RO waste water it produces, often referred to as reject water from RO. Instead of letting this valuable resource contribute to water wastage, you have an incredible opportunity to transform it into a reusable asset.
By collecting and repurposing this water, you’re not just saving water; you’re also lowering your utility bills and actively reducing your environmental footprint. The key lies in effective RO waste water collection and understanding the best practices for how to use RO waste water throughout your home. Is RO waste water good for cleaning clothes? Can you reuse RO reject water for washing your car? Let’s find out the best ways here!
Also Read: 6 Benefits Of RO Water Purifiers for Your Home In Bangalore
1. Gardening and Plant Watering
The RO waste water still contains dissolved minerals and salts, which can be beneficial for many plants. While it’s generally not recommended for very sensitive plants or edible gardens due to potentially higher mineral content, it’s excellent for established trees, shrubs, and ornamental plants. You can directly water outdoor plants, or use it for non-edible potted plants. The mineral content can actually act as a mild fertiliser for some species.
2. Flushing Toilets
This is perhaps one of the easiest and most impactful ways of reusing RO waste water. Instead of using fresh, purified water to flush your toilet, simply pour the collected reject water from RO into the toilet bowl. This significantly reduces your household’s overall water consumption for a task that doesn’t require pristine water quality. A dedicated RO waste water storage tank connected to your toilet’s cistern can automate this process, making it incredibly convenient.
Also Read: How To Choose The Best Water Purifier For Home In Delhi
3. Cleaning Floors and Surfaces
The RO system waste water is perfectly suitable for mopping floors, cleaning outdoor patios, washing windows, or even scrubbing bathroom tiles. Its slightly higher mineral content won’t typically cause issues for these tasks, and it helps prevent the use of fresh water where it’s not strictly necessary. Keep a bucket of collected water handy for these chores.
4. Washing Vehicles
Give your car, bike, or outdoor equipment a rinse by reusing RO waste water. The water is cleaner than typical tap water for external use, and its slightly different mineral composition can even help in reducing water spots, which are common with hard tap water. This is an excellent way to conserve potable water.
5. Pre-Rinsing Laundry
For certain types of laundry, particularly heavily soiled items, you can use the RO waste water for an initial pre-rinse cycle in your washing machine. This helps remove loose dirt and grime before the main wash cycle, which can then use fresh water. This method of reusing RO waste water can also save on detergent. However, be mindful of the mineral content if you have very delicate fabrics.
6. Cooling and Evaporative Uses
In some specific applications, RO waste water can be used for cooling systems or evaporative coolers where the slight mineral content isn’t an issue. For instance, in areas with suitable climates, it could be used in swamp coolers or for purposes like cooling down machinery, provided it meets the specific requirements for that equipment. Always check manufacturer guidelines and consult with a professional for such specialised uses.
Also Read: 9 Benefits Of Renting An RO Water Purifier For Home
While crucial for health, RO purifiers also produce a notable amount of RO waste water – typically 3 liters for every 1 liter of purified water. This is where the opportunity for RO waste water collection becomes vital. Instead of letting this reject water from RO go to waste, adopting strategies for reusing RO waste water can significantly reduce your household’s water footprint, contributing to both sustainability and savings.
In case you are wondering where you can get the best RO water purifier, check out RentoMojo’s water purifiers for rent. Visit RentoMojo and explore the collection now!
Also Read: A Guide To Finding The Best Water Installation Service
Frequently Asked Questions
1. Can we use RO waste water for plants?
You can use reverse osmosis waste water for plants as long as you monitor its TDS and avoid overuse, since it contains higher salt and mineral concentrations that can sometimes harm plant roots.
2. How much water does an RO system waste?
An average RO system wastes about 3 to 5 litres of water for every 1 litre of purified water, so most of the water that goes in is lost as waste.
3. Can we use RO water for hair wash?
You should not wash your hair with RO waste water because it contains high TDS and dissolved salts that can cause dryness, irritation, and hair fall.
4. Is RO water 100% pure?
RO water is not 100% pure, but it is highly purified, removing 95–99% of contaminants, making it almost as pure as distilled water.
5. Can we wash vegetables with RO water?
That’s correct—washing vegetables with RO water is effective at removing surface impurities and contaminants, as RO water is highly pure and can dissolve chemicals and dirt from the produce.
6. Is RO waste water corrosive?
RO reject water is not typically corrosive to metal pipes because it contains high dissolved solids and minerals, but pure RO product water is corrosive due to its low pH and lack of alkalinity.
