Thinking about recycling water at home to save on your water bills and help the environment? You might have heard about reusing greywater (the wastewater from showers, laundry, and sinks) but it’s important to know the facts before you decide what’s right for you.

If your goal is to reuse greywater inside your house, like flushing toilets, it’s technically possible — but it’s usually expensive and complicated.

Reusing greywater inside your house isn't actually cost effective

Your toilet water is actually black water, which is separate from greywater and makes up about a third of your wastewater. This means that even if you treat greywater to reuse it in toilets, the overall water savings might be smaller than expected.

Plus, reusing greywater inside requires a proper disinfection system to make sure the water is safe. These treatment plants are costly to buy and need regular maintenance to keep working well, which adds to your long-term expenses.

Our simpler, smarter alternative to greywater

Here’s a question: why bother reusing “dirty” greywater inside when you can catch clean rainwater instead?

By installing a modest water tank — usually between 5,000 and 10,000 litres — you can collect rainwater from your roof. This water doesn’t need complicated treatment before using it for toilets, garden irrigation, car washing, and more.

With just a basic filter, rainwater can even back up your whole house’s water supply and keep you ahead during summer water restrictions.

How does this compare cost-wise?

• Greywater recycling systems with disinfection plants can cost thousands upfront and require ongoing maintenance.

• Rainwater tanks and simple filtration are much cheaper to install and easier to maintain.

• Plus, rainwater harvesting taps into a free, natural resource — the rain that falls on your roof!

Why choose rainwater catchment over greywater recycling?

• Cost-effective: Lower upfront and ongoing costs.

• Simple: Fewer moving parts, less maintenance.

• Versatile: Great for toilets, gardens, car washing, and emergency backup.

• Reliable: You’re capturing clean water, not needing expensive treatment.

What’s next?

If you’re ready to reduce your water bills and lessen your environmental footprint, consider rainwater harvesting as a practical, budget-friendly alternative to complex greywater recycling systems.

Want to learn more about setting up rainwater tanks or how much it might cost for your home? Get in touch with our team today. We can guide you through the best options for your property and lifestyle.