35+ years of rainwater expertise
Helping people collect rainwater
Rain Harvesting™ makes it simple to get the most from every drop. Whether you're setting up your first system or improving an existing one, our products, free design tools, and expert guidance are here to help your rainwater system work as well as it possibly can.
Why collect rainwater?
Rainwater harvesting works for everyone, from suburban homes to rural properties, in high or low rainfall areas. Here are some of the most common reasons people start collecting.
Reducing dependence on mains water
Saving money or qualifying for rebates
Improved drought resilience
A healthier garden
Bushfire preparedness
Lowering your ecological footprint
Better stormwater management
Protecting your building
Increased self-sufficiency
Understand your rainwater needs
Work out how much water you need, how you'll use it, and what your local rainfall looks like. Getting this right from the start means a system designed for your property.
Store your rainwater
Choose the right tank for your property. Size, material, and location all affect how much water you collect and how well your system performs over time.
Assess your rainwater collection area
Your roof is your catchment. Check surface materials, overhanging trees, and gutters for anything that could affect water quality before it reaches your tank.
Filter leaves and debris
Leaves, twigs, and debris are the first source of contamination. A quality rain head or leaf filter keeps them out of your system from the very first drop.
Divert the first flush of rainwater
The first water off your roof carries the most contaminants. A first flush diverter automatically redirects this away from your tank, so only cleaner water is stored.
Secure your rainwater system
Keep animals, insects, and sunlight out with tank screens and insect-proof screens. An air gap prevents stormwater and groundwater backflow into your tank.
Decide on a pump or gravity-fed system
How you draw water from your tank matters. Talk to a specialist to find the right setup for your property, whether that's a pump, gravity feed, or a combination of both.
Manage standing water
Stagnant water breeds problems. Regularly drain wet systems to prevent sediment build-up, and use a solar shield to block sunlight and stop algae growth in your tank.
Final stage rainwater filtration
Decide how much filtration your water needs based on how you'll use it. Remove tannins and colour for laundry, and filter thoroughly if you're using rainwater for drinking.
Optimise your overflow
Make sure your overflow is plumbed into a stormwater main with an air gap. Your outlet should match your inlet to keep the system balanced and working efficiently.
Monitor your water level
Keep track of your tank levels, inflows, and outflows over time. Good data helps you understand your system's performance and plan ahead for dry periods.
Care for your system
Check regularly for leaks, pest entry points, and contaminant build-up. Clean your system with a pressure cleaner and upgrade components as needed.
Our proven approach to collecting quality rainwater
Explore our product ranges
Meet Tama
Mass balance tool
Find out how much rainwater your roof could collect based on your location, roof size, and local rainfall data. See whether your current tank is big enough, or discover how much you could save by adding one.
First Flush calculator and selector
Calculate how much water you need to divert and find the right First Flush Diverter for your property.
Rain Head selector
Select the right rain head for your property based on your roof area, gutter size, and rainfall intensity.
Tank Screen selector
Find the right tank screen for your setup. Answer a few simple questions about your tank and inlet, and we'll recommend the best match.
Post-tank filter selector
Select the right filter housing and cartridge for your property based on how you use your rainwater and the level of filtration you need.
Product selection tools
Designed by our product development team, these free tools make it simple to find the right products for your property. Whether you're calculating your first flush volume, estimating tank levels, or selecting a rain head, we're here to guide you every step of the way.
Residential system with slimline tank
WHY RAIN HARVESTING™
Rain Harvesting™, helping Australia collect rainwater for 35+ years
35+ years of expertise
We exist to help people collect rainwater, every day. For over 35 years, we've learnt, studied, listened, and created solutions to help people harvest quality rainwater. From one simple rainwater tank in Australia, our passion has grown into a global mission.
Free tools, courses, and expert guidance
Here to help at every step
We don't just sell products. We give you the knowledge to get the most from your system. From free online courses and interactive selector tools to our complimentary design service, we're here to support you at every step of your rainwater journey.
From the Leaf Eater® to smart devices
Simple, smart products
For over 35 years, we've been developing simple, smart products that make rainwater harvesting easier and more effective. From the original Leaf Eater® rain head to our latest smart devices, we're constantly improving how people collect and use rainwater.
WHY RAIN HARVESTING™
35+ years of expertise
We exist to help people collect rainwater, every day. For over 35 years, we've learnt, studied, listened, and created solutions to help people harvest quality rainwater. From one simple rainwater tank in Australia, our passion has grown into a global mission.
For homeowners
Get a free system design
Not sure where to start? Our Rain Harvesting™ specialists will design a system tailored to your property, completely free. Just share your details and we'll send you a comprehensive report covering everything you need to install and maintain your system.
For retailers & installers
Partner with Rain Harvesting™
Join a growing network of retailers and installers who trust Rain Harvesting™ products. Access our full product range, technical training, marketing support, and dedicated account management to help grow your business.