Understand your rainwater needs
Store your rainwater
Assess your rainwater collection area
Clean: Filter leaves and debris
Clean: Divert the first flush of rainwater
Secure your rainwater system
Decide on a pump or gravity-fed system
Manage standing water
Final stage rainwater filtration
Optimise your overflow
Monitor your water level
Care for your system
Clean: Divert the first flush of rainwater
Even with leaves filtered out, the first rain to hit your roof washes off fine sediment, dust and dissolved contaminants. Diverting this first flush away from your tank is one of the most effective things you can do for water quality, and one of the most commonly skipped.
Clean: Divert the first flush of rainwater
The first water off your roof carries the most contaminants. Diverting that initial, dirtier flow away from your tank, before it is stored, is one of the simplest wins for water quality.
THINGS TO CONSIDER
Why divert the first flush?
The first water off your roof has the highest concentration of fine sediment and dissolved solids. Sending it away from your tank keeps your stored water cleaner.
How a First Flush Diverter works
A First Flush Diverter holds back the initial flow of each rain event, then lets the cleaner water that follows pass through to your tank, automatically.
Sizing it for your roof
How much water to divert depends on your roof area. Our First Flush Calculator helps you work out the right diverter for your property.
The Handbook
Your complete guide to collecting rainwater, from first steps to system maintenance.
Free design service
Not sure how to apply the steps? Our specialists will design your system, free.
Tell us about your property and our experts will design a system that captures more, cleaner water.