First Flush Diverters

Divert contaminated water from your roof during the first moments of rainfall and prevent it from entering your tank.

Our First Flush Diverters play an essential role in protecting your rainwater quality.

By isolating the first flush of contaminant-laden water before it reaches your tank, they will keep organic and inorganic fine particles out of the rainwater you harvest so you enjoy the benefits of cleaner rainwater for your property.

Total Rain

The all-in-one solution, the Leaf Eater Stream filters leaves from your downpipe and the Carrot First Flush diverts the first flush (20L/5Gal) from your catchment area.

First Flush Carrot

First Flush Carrot

Divert your initial roof run-off (20L / 5 Gal) without the need for a traditional first flush storage chamber and ensure only the cleanest water reaches your tank.

First Flush Boost

First Flush Boost

Increase your first flush diverter's capacity by 20L (5gal) with this compact chamber. Simply add the First Flush Boost to any first flush diverter to give it an instant boost in capacity.

First Flush Boost Expansion Kit

First Flush Boost Expansion Kit

Increase the diversion volume of your First Flush Boost.

First Flush w/ Catch-All Tee and Electronic Valve

First Flush w/ Catch-All Tee and Electronic Valve

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank.

First Flush w/ Catch-All Tee

First Flush w/ Catch-All Tee

Divert the most contaminated water that washes off your roof to give you the best water in your tank. Includes the Catch-All-Tee

First Flush Max w/ Catch-All Tee

First Flush Max w/ Catch-All Tee

The Max Chamber increases the volume of water you can divert, while using less space on your wall.

First Flush w/ Basic Tee

First Flush w/ Basic Tee

Divert the most contaminated water that washes off your roof to give you the best water in your tank.

First Flush Delta Post/Wall

First Flush Delta Post/Wall

High volume, wall mounted first flush diverter, perfect for whole of house and large properties. Incorporates the Catch-All Tee and Electronic Release Valve to optimise first flush performance.

First Flush Delta In-Ground

First Flush Delta In-Ground

High volume, inground First Flush Diverters, perfect for whole of house and large properties.

First Flush Delta Post/Wall no tee

First Flush Delta Post/Wall no tee

High volume, wall mounted first flush diverter, perfect for whole of house and large properties. Incorporates the Catch-All Tee and Electronic Release Valve to optimise first flush performance.

Electronic Release Valve (Battery)

Electronic Release Valve (Battery)

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank. Can be installed to replace any existing first flush diverter outlet.

First Flush Carrot Extra Volume Kit

First Flush Carrot Extra Volume Kit

Increase the volume which your First Flush Carrot will divert up to 40L/10 Gal - no tools required.

Spare Part Kit for Carrot and Total Rain

Spare Part Kit for Carrot and Total Rain

This spare part kit will suit your Carrot First Flush or Total Rain.

First Flush Carrot O-Ring

First Flush Carrot O-Ring

O-ring replacement for your Carrot First Flush.

First Flush Washers – Red

First Flush Washers – Red

Slow release valve set for diameters 1.25mm to 2.00mm.

First Flush Washers – Black

First Flush Washers – Black

Slow release valve set for diameters 0.25mm to 1.00mm.

First Flush Sealing Ball – Black

First Flush Sealing Ball – Black

76mm First Flush Ball replacement.

First Flush Slim Filter

First Flush Slim Filter

Fine filter for First Flush Diverters.

First Flush Large Filter

First Flush Large Filter

This 955 micron primary filter screen helps to keep your first flush outlet clear and reduce maintenance frequency.

First Flush Screw Cap O-ring

First Flush Screw Cap O-ring

O-Ring replacement for your white or clear first flush end cap.

Total Rain

The all-in-one solution, the Leaf Eater Stream filters leaves from your downpipe and the Carrot First Flush diverts the first flush (20L/5Gal) from your catchment area.

First Flush Carrot

First Flush Carrot

Divert your initial roof run-off (20L / 5 Gal) without the need for a traditional first flush storage chamber and ensure only the cleanest water reaches your tank.

First Flush Boost

First Flush Boost

Increase your first flush diverter's capacity by 20L (5gal) with this compact chamber. Simply add the First Flush Boost to any first flush diverter to give it an instant boost in capacity.

First Flush Boost Expansion Kit

First Flush Boost Expansion Kit

Increase the diversion volume of your First Flush Boost.

First Flush w/ Catch-All Tee and Electronic Valve

First Flush w/ Catch-All Tee and Electronic Valve

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank.

First Flush w/ Catch-All Tee

First Flush w/ Catch-All Tee

Divert the most contaminated water that washes off your roof to give you the best water in your tank. Includes the Catch-All-Tee

First Flush Max w/ Catch-All Tee

First Flush Max w/ Catch-All Tee

The Max Chamber increases the volume of water you can divert, while using less space on your wall.

First Flush w/ Basic Tee

First Flush w/ Basic Tee

Divert the most contaminated water that washes off your roof to give you the best water in your tank.

First Flush Delta Post/Wall

First Flush Delta Post/Wall

High volume, wall mounted first flush diverter, perfect for whole of house and large properties. Incorporates the Catch-All Tee and Electronic Release Valve to optimise first flush performance.

First Flush Delta In-Ground

First Flush Delta In-Ground

High volume, inground First Flush Diverters, perfect for whole of house and large properties.

First Flush Delta Post/Wall no tee

First Flush Delta Post/Wall no tee

High volume, wall mounted first flush diverter, perfect for whole of house and large properties. Incorporates the Catch-All Tee and Electronic Release Valve to optimise first flush performance.

Electronic Release Valve (Battery)

Electronic Release Valve (Battery)

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank. Can be installed to replace any existing first flush diverter outlet.

First Flush Carrot Extra Volume Kit

First Flush Carrot Extra Volume Kit

Increase the volume which your First Flush Carrot will divert up to 40L/10 Gal - no tools required.

Spare Part Kit for Carrot and Total Rain

Spare Part Kit for Carrot and Total Rain

This spare part kit will suit your Carrot First Flush or Total Rain.

First Flush Carrot O-Ring

First Flush Carrot O-Ring

O-ring replacement for your Carrot First Flush.

First Flush Washers – Red

First Flush Washers – Red

Slow release valve set for diameters 1.25mm to 2.00mm.

First Flush Washers – Black

First Flush Washers – Black

Slow release valve set for diameters 0.25mm to 1.00mm.

First Flush Sealing Ball – Black

First Flush Sealing Ball – Black

76mm First Flush Ball replacement.

First Flush Slim Filter

First Flush Slim Filter

Fine filter for First Flush Diverters.

First Flush Large Filter

First Flush Large Filter

This 955 micron primary filter screen helps to keep your first flush outlet clear and reduce maintenance frequency.

First Flush Screw Cap O-ring

First Flush Screw Cap O-ring

O-Ring replacement for your white or clear first flush end cap.

All First Flush Diverters

Our First Flush Diverters play an essential role in protecting your rainwater quality.

By isolating the first flush of contaminant-laden water before it reaches your tank, they will keep organic and inorganic fine particles out of the rainwater you harvest so you enjoy the benefits of cleaner rainwater for your property.

Total Rain

The all-in-one solution, the Leaf Eater Stream filters leaves from your downpipe and the Carrot First Flush diverts the first flush (20L/5Gal) from your catchment area.

First Flush Carrot

First Flush Carrot

Divert your initial roof run-off (20L / 5 Gal) without the need for a traditional first flush storage chamber and ensure only the cleanest water reaches your tank.

First Flush Boost

First Flush Boost

Increase your first flush diverter's capacity by 20L (5gal) with this compact chamber. Simply add the First Flush Boost to any first flush diverter to give it an instant boost in capacity.

First Flush Boost Expansion Kit

First Flush Boost Expansion Kit

Increase the diversion volume of your First Flush Boost.

First Flush w/ Catch-All Tee and Electronic Valve

First Flush w/ Catch-All Tee and Electronic Valve

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank.

First Flush w/ Catch-All Tee

First Flush w/ Catch-All Tee

Divert the most contaminated water that washes off your roof to give you the best water in your tank. Includes the Catch-All-Tee

First Flush Max w/ Catch-All Tee

First Flush Max w/ Catch-All Tee

The Max Chamber increases the volume of water you can divert, while using less space on your wall.

First Flush w/ Basic Tee

First Flush w/ Basic Tee

Divert the most contaminated water that washes off your roof to give you the best water in your tank.

First Flush Delta Post/Wall

First Flush Delta Post/Wall

High volume, wall mounted first flush diverter, perfect for whole of house and large properties. Incorporates the Catch-All Tee and Electronic Release Valve to optimise first flush performance.

First Flush Delta In-Ground

First Flush Delta In-Ground

High volume, inground First Flush Diverters, perfect for whole of house and large properties.

First Flush Delta Post/Wall no tee

First Flush Delta Post/Wall no tee

High volume, wall mounted first flush diverter, perfect for whole of house and large properties. Incorporates the Catch-All Tee and Electronic Release Valve to optimise first flush performance.

Electronic Release Valve (Battery)

Electronic Release Valve (Battery)

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank. Can be installed to replace any existing first flush diverter outlet.

First Flush Carrot Extra Volume Kit

First Flush Carrot Extra Volume Kit

Increase the volume which your First Flush Carrot will divert up to 40L/10 Gal - no tools required.

In-Ground Solutions

Our First Flush Diverters play an essential role in protecting your rainwater quality.

By isolating the first flush of contaminant-laden water before it reaches your tank, they will keep organic and inorganic fine particles out of the rainwater you harvest so you enjoy the benefits of cleaner rainwater for your property.

First Flush Delta In-Ground

First Flush Delta In-Ground

High volume, inground First Flush Diverters, perfect for whole of house and large properties.

First Flush Delta In-Ground

First Flush Delta In-Ground

High volume, inground First Flush Diverters, perfect for whole of house and large properties.

Large Capacity First Flush Diverters

Our First Flush Diverters play an essential role in protecting your rainwater quality.

By isolating the first flush of contaminant-laden water before it reaches your tank, they will keep organic and inorganic fine particles out of the rainwater you harvest so you enjoy the benefits of cleaner rainwater for your property.

Upgrade Kits, Accessories & Spare Parts

Our First Flush Diverters play an essential role in protecting your rainwater quality.

By isolating the first flush of contaminant-laden water before it reaches your tank, they will keep organic and inorganic fine particles out of the rainwater you harvest so you enjoy the benefits of cleaner rainwater for your property.

First Flush Boost Expansion Kit

First Flush Boost Expansion Kit

Increase the diversion volume of your First Flush Boost.

Electronic Release Valve (Battery)

Electronic Release Valve (Battery)

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank. Can be installed to replace any existing first flush diverter outlet.

First Flush Carrot Extra Volume Kit

First Flush Carrot Extra Volume Kit

Increase the volume which your First Flush Carrot will divert up to 40L/10 Gal - no tools required.

Spare Part Kit for Carrot and Total Rain

Spare Part Kit for Carrot and Total Rain

This spare part kit will suit your Carrot First Flush or Total Rain.

First Flush Carrot O-Ring

First Flush Carrot O-Ring

O-ring replacement for your Carrot First Flush.

First Flush Washers – Red

First Flush Washers – Red

Slow release valve set for diameters 1.25mm to 2.00mm.

First Flush Washers – Black

First Flush Washers – Black

Slow release valve set for diameters 0.25mm to 1.00mm.

First Flush Sealing Ball – Black

First Flush Sealing Ball – Black

76mm First Flush Ball replacement.

First Flush Slim Filter

First Flush Slim Filter

Fine filter for First Flush Diverters.

First Flush Large Filter

First Flush Large Filter

This 955 micron primary filter screen helps to keep your first flush outlet clear and reduce maintenance frequency.

First Flush Screw Cap O-ring

First Flush Screw Cap O-ring

O-Ring replacement for your white or clear first flush end cap.

First Flush Boost Expansion Kit

First Flush Boost Expansion Kit

Increase the diversion volume of your First Flush Boost.

Electronic Release Valve (Battery)

Electronic Release Valve (Battery)

Precisely set how often you want to divert water so you can optimise the quality and quantity of water you catch in your tank. Can be installed to replace any existing first flush diverter outlet.

First Flush Carrot Extra Volume Kit

First Flush Carrot Extra Volume Kit

Increase the volume which your First Flush Carrot will divert up to 40L/10 Gal - no tools required.

Spare Part Kit for Carrot and Total Rain

Spare Part Kit for Carrot and Total Rain

This spare part kit will suit your Carrot First Flush or Total Rain.

First Flush Carrot O-Ring

First Flush Carrot O-Ring

O-ring replacement for your Carrot First Flush.

First Flush Washers – Red

First Flush Washers – Red

Slow release valve set for diameters 1.25mm to 2.00mm.

First Flush Washers – Black

First Flush Washers – Black

Slow release valve set for diameters 0.25mm to 1.00mm.

First Flush Sealing Ball – Black

First Flush Sealing Ball – Black

76mm First Flush Ball replacement.

First Flush Slim Filter

First Flush Slim Filter

Fine filter for First Flush Diverters.

First Flush Large Filter

First Flush Large Filter

This 955 micron primary filter screen helps to keep your first flush outlet clear and reduce maintenance frequency.

First Flush Screw Cap O-ring

First Flush Screw Cap O-ring

O-Ring replacement for your white or clear first flush end cap.

Looking for something else?

View the full product range from our home base in Australia.

First Flush Calculator by Rain Harvesting

First Flush Calculator

Get started now

Easily calculate how much water you need to divert and discover which First Flush Diverter is right for you.

Design Service

Get started now

Improve your existing Rain Harvesting system or design a new one with the help of our experts and our free system design service.

Free Handbooks by Rain Harvesting

Rain Harvesting Handbook

Download yours today

A guide that will provide you with help and inspiration to start your rainwater harvesting journey today.

A sketch of mechanics about rain harvesting

Design Service

Get started now

Improve your existing Rain Harvesting system or design a new one with the help of our experts and our free system design service.