Tackle Your RO Purifier's Waste
Reverse Osmosis (RO) purifiers are common in Indian kitchens, but they are notoriously inefficient. For every litre of purified drinking water, an average RO system can waste between three to four litres of water. This 'reject water' usually goes straight
down the drain. Instead of letting this precious resource go to waste, you can easily collect it. This water, while not fit for drinking due to high dissolved solids, is perfectly usable for a variety of household chores. You can use it for mopping floors, washing your car, cleaning utensils, or flushing toilets. By simply placing a bucket or a small drum at the outlet pipe, a family can save thousands of litres of water every year, turning a point of wastage into a source of reusable water.
Give Greywater a Second Life
Greywater is the relatively clean wastewater from baths, showers, bathroom sinks, and washing machines. It's different from 'blackwater', which comes from toilets. A significant portion of daily domestic water use, sometimes as much as 80 litres per person, can be classified as greywater and is recyclable. With some simple plumbing modifications to separate greywater from blackwater pipes, this water can be collected. Even basic filtration—like passing it through sand and charcoal—can make it suitable for non-potable uses like watering your garden, flushing toilets, or cleaning outdoor areas. Several apartment complexes in cities like Chennai and Pune have successfully implemented community-scale greywater recycling, proving its viability and impact. For individual homes, even diverting the outlet from a washing machine to a garden bed can make a noticeable difference.
Conduct a Monthly Water Audit
The most significant water loss is often the one you can't see. A single dripping tap can waste thousands of litres a year, while a silent toilet leak can be even more wasteful. Make it a monthly habit to conduct a quick water audit of your home. Check all taps, pipes under sinks, and showerheads for drips. A simple way to check for a toilet leak is to add a few drops of food colouring to the flush tank; if the colour appears in the bowl without flushing, you have a leak that needs fixing. Another part of the audit is reading your water meter before and after a two-hour period when no water is being used. If the meter has moved, you likely have a hidden leak somewhere in your plumbing that requires a professional's attention.
Swap the Shower for a Bucket Bath
In the hierarchy of water usage in an Indian household, bathing often accounts for a large share. While modern showers are convenient, they can use a tremendous amount of water, especially if they are long. A typical shower can use significantly more water than a traditional bucket bath. Opting for a bucket bath provides complete control over the amount of water used, typically limiting it to 15-20 litres. This single change in daily routine can save a family hundreds of litres of water every week. If giving up the shower is not an option, aim to keep it under three to five minutes and consider installing a low-flow showerhead to reduce consumption without sacrificing pressure.
Master the Art of the Full Load
Washing machines and dishwashers are major water consumers. The key to making them efficient is to only run them when they are completely full. Running a machine for a half-load uses almost the same amount of water as a full load. By waiting until you have enough laundry or dishes to fill the machine, you maximize the efficiency of every litre of water used. Many modern washing machines also come with an 'eco' or water-saving mode, which should be used whenever possible. Furthermore, the final rinse water from a washing machine cycle is often clean enough to be collected and reused for tasks like mopping the floor.
Embrace Rainwater Harvesting
India receives most of its rainfall during a few monsoon months, and much of this water is lost to runoff. Capturing this rainwater is a powerful way to reduce reliance on municipal supply and groundwater. Rainwater harvesting can be as simple as placing barrels or tanks to collect runoff from your rooftop, or as complex as installing a system with filters to recharge groundwater wells. The collected water can be used for gardening, cleaning, and, if properly filtered, even for bathing and laundry. Government initiatives like the Jal Shakti Abhiyan actively encourage citizens to set up rainwater harvesting structures, recognising it as a critical component of water security.
