Have you ever wondered if there’s a way to maximise the use of water your washing machine uses? Wash cycles can use a lot of water and reusing the leftover water looks like a win-win situation because it not only reduces household water usage but also lowers utility costs, and benefits the environment in the long run. But is it actually possible to reuse washing machine water? In this guide, we’ll answer the question of whether it is possible to reuse it and if so, how you can do it effectively.
Is it possible to reuse the washing machine water?
Yes, you can reuse the water from your washing machine. This process, called a greywater system, uses leftover water from laundry, showers, sinks (except toilets), as well as baths and is free of faecal contamination. Greywater is generally considered safe for watering plants or flushing toilets because it doesn’t contain the harmful contaminants and chemicals found in sewage water, commonly referred to as blackwater. Unlike greywater, blackwater comes from toilets and needs a lot of treatment before it can be reused.
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However, since greywater contains impurities like soap, bacteria, chemicals, and dirt, it is unsafe for human or pet consumption. It is mostly used as an effective replacement for freshwater in applications including irrigation, washing, and surface cleaning. Moreover, inadequately penetrated greywater can pool and contaminate surrounding surface water, and untreated water storage might harbour viruses.
How to reuse the washing machine water
If you are interested in recycling water and reusing it, greywater systems are the way to go and are perfect for washing clothes or watering your garden. When choosing a greywater system, opt for one that’s easy to install and operate. It’s also important to understand the quality of the water produced, so you can be sure your treated greywater is safe to use. In case you’re unsure about anything or have any queries, get in touch with professional consultants.
Generally, greywater treatment is conducted in a separate tank, similar to a traditional septic tank but dedicated solely to greywater, not black water. Water from laundry, showers, and bathrooms is collected in a separate pipe and diverted away from the main drain, thus preventing it from mingling with sewage water. Solid waste, such as hair and food particles, is filtered out first, followed by the removal of germs, pathogens, and chemicals.
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Following treatment, the resulting water is suitable for irrigation and cleaning. If you specifically want to reuse washing machine water, install a greywater diversion valve before it enters the main drain. However, when planning to use it for greywater treatment, avoid detergents containing bleach, boron, or salt.
Long story short, yes, you can reuse washing machine water with the right systems in place.
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Shubhendu Vatsa
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