Flushing the toilet is one of those actions we perform almost automatically every day. We don’t even give it a second thought: we press the button or pull the lever – and carry on with our business. But how often do we stop to consider what this simple action actually entails, especially when it’s just a matter of urine?
At first glance, it seems like a trivial habit, but it is precisely this that quietly leads to a huge waste of water, often without us even realising it.
We’re flushing away drinking water — literally
Every time you flush a standard toilet, between 3 and 9 litres of clean, treated, drinkable water goes down the drain. It’s the very same water you could safely drink straight from the tap — but it’s being used to wash away a few drops of urine.
To put this into perspective:
The average family flushes the toilet about 10 times a day, which can mean up to 100 litres of water wasted daily.
Over a year, this adds up to more than 36,000 litres — enough to fill a small swimming pool.
Now multiply that by millions of households, and it becomes clear just how huge this problem is.
At the same time, more than two billion people worldwide still do not have access to a safe source of drinking water. Every unnecessary flush only serves to highlight the gap between abundance and scarcity.
‘If it’s yellow, let it go’: a simple but powerful rule
To reduce such waste, many eco-conscious families are increasingly turning to an old saying:
‘If it’s yellow, let it go. If it’s brown, flush it.’
The idea is very simple: urine, which is usually sterile and generally poses no danger, does not always require immediate flushing, especially if you clean the toilet regularly. By skipping just a few flushes a day, you can save thousands of litres of water a year.
It’s a small change in habit that requires almost no effort but yields noticeable results.
But what about odour and hygiene?
Understandably, one of the main concerns people have is about odour and cleanliness. Fortunately, there are simple and effective ways to deal with this:
Add a few drops of essential oil, such as eucalyptus, lemon, mint or lavender, to a small container or diffuser near the toilet for a natural fragrance.
Clean the toilet bowl regularly — ideally every day or every few days if you follow the ‘let it stand’ rule.
Use natural cleaning products: vinegar, bicarbonate of soda or eco-friendly toilet blocks to keep it fresh and clean.
The key is consistency. If the bathroom is kept clean, missing the occasional flush won’t compromise hygiene, and unpleasant odours won’t be a problem either.
Simple solutions – big impact
The advantage of this approach is that you don’t need expensive systems or complex technology to get started. Here are a few practical steps you can take today:
✅ Change your habits
Only flush when it’s really necessary: after solid waste or if there’s a strong odour.
Start by skipping one or two flushes a day, then gradually build on this habit.
✅ Install a dual-flush toilet
These models offer two settings: an economy flush for liquid waste, often less than 3 litres, and a full flush for solid waste.
Many modern toilets already have this feature, and inexpensive conversion kits are available for older models.
✅ Consider composting or dry toilets
In off-grid homes, eco-communities or rural areas, dry toilets allow you to completely stop using water.
With proper maintenance, they don’t smell and turn waste into compost, naturally closing the loop.
Don’t forget: social etiquette matters too
Toilet habits are a personal matter, and attitudes towards flushing can be a sensitive issue, especially if you live with others or are a guest. If you share a home with someone else:
Discuss common rules within the family or amongst neighbours.
Respect everyone’s comfort level.
If in doubt, especially when you’re a guest, it’s usually best to flush — unless you know for certain that the ‘let it sit’ rule is welcome there.
Environmental friendliness shouldn’t come at the expense of domestic comfort and good relations.
Why it’s time to rethink the habit of flushing
Let’s briefly recap the main reasons to consider a change:
🚽 Every flush uses between 3 and 9 litres of high-quality drinking water
💧 Urine is not harmful if the toilet is cleaned regularly
🌍 A simple change in behaviour = significant water savings
💡 There are alternatives: dual-flush toilets or dry toilets
🧠 Small changes at home can spark a broader environmental mindset
The bottom line: a tiny action — a huge result
Changing how and when you flush the toilet may seem like a minor gesture. But in reality, it is one of the simplest and quickest ways to reduce your water footprint. By rethinking this everyday habit, you are not just saving water — you are contributing to a more conscious and sustainable world.
Next time you reach for the flush button, ask yourself: does this really need to go down the drain right now?
Sometimes, letting it sit for a while is the more sensible and environmentally friendly choice.
