First Flush Diverter
First flush diverters capture and hold the first, dirtiest run of rainfall, the water that carries the dust and sediment washed off your roof, so it is kept out of your tank. Options range from simple chamber-style diverters through to in-ground and commercial setups, with manual or automatic resetting between downpours.
Total Rain
First Flush Delta Post/Wall no tee
First Flush Carrot Extra Volume Kit
First Flush w/ Basic Tee
First Flush Delta Post/Wall
First Flush w/ Catch-All Tee
First Flush Boost
Total Rain - Extra Volume
Total Rain - Extra Volume
First Flush Delta In-Ground
First Flush Carrot - Extra Volume
First Flush Carrot
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.
The 12 Steps of Rain Harvesting™
Frequently asked questions
How does a first flush diverter work?
What's the difference between a chamber and a chamberless first flush diverter?
How much water should I be diverting?
What are my options for emptying the chamber after it fills?
Where should I install my first flush diverter?
Can I install a first flush diverter myself, or do I need a plumber?
Designed by Rain Harvesting™
Need a tailored system design?
Our specialists can design a complete Rain Harvesting™ system for your property or improve an existing one. You’ll receive a detailed report with everything you need to install and maintain it.
The Handbook
The ultimate guide for help and inspiration to start your rainwater harvesting journey today.