How a Rainwater Harvesting System Works — And Why It’s Worth It

A rainwater harvesting system is one of the simplest and most cost-effective ways to take control of your household water supply.

At its core, the system consists of a storage tank that collects rainwater from your roof via gutters and piping. As it rains, water is directed through a pre-filtration system to remove leaves, debris, and contaminants before entering the tank.

What's Involved in the Setup?
To install a basic rainwater harvesting solution, you'll need:
1) A durable water storage tank, sized according to your household needs and roof catchment area
2) Proper guttering and downpipes – to capture and guide rainwater efficiently
3) A pre-filtration system – to ensure clean water enters the tank, preventing sediment build-up
4) Optional pump and filtration unit – for pressurised delivery or potable use

The system can be installed above or below ground, and can be as simple or advanced as your needs require.

Benefits Beyond the Basics
Aside from being easy to install and relatively low-maintenance, the real value of a rainwater harvesting system lies in its long-term savings and independence. With municipal water often restricted or interrupted, this solution ensures your garden, toilets, and even washing machines stay functional when others don’t.

Advantages include:
• Reduced municipal water usage and bills
• Self-sufficiency during droughts or water cuts
• Ideal for irrigation, cleaning, and non-potable use
• Eco-friendly and sustainable
• Increases property value with a built-in water backup system

Add Municipal Backup for Extra Peace of Mind
For households wanting more resilience, a municipal backup system can be added. This stores and pressurises municipal water when it’s available, and kicks in during supply cuts—ensuring uninterrupted access, especially for drinking and essential use.

Rainwater harvesting is a smart, affordable way to future-proof your home. Whether you're looking to cut costs, reduce your footprint, or simply prepare for the unexpected, this system delivers real, long-term benefits with minimal hassle.