Downspout First Flush Water Diverter Kits

Want cleaner cistern or rain barrel water?

Buy this First Flush Diverter Kit!

First Flush Water Diverters improve water quality, reduce tank maintenance and protect pumps by minimizing the first flush of water, which may contain contaminants from the roof, from entering the tank.

Instead of flowing to the water tank, pollutants are diverted with the initial flow of water into the chamber of the water diverter. The first flush water diverters utilize a dependable ball and seat system - a simple automatic system that does not rely on mechanical parts or manual intervention. As the water level rises in the diverter chamber the ball floats, and once the chamber if full, the ball rests on a seat inside the diverter chamber preventing any further water entering the diverter. The subsequent flow of water is then automatically directed along the pipe system to the tank.

You will need to supply the 3" diameter PVC standpipe and connection fittings not shown in this image to link to your downspout or gutters.

Downspout First Flush Water Diverter Kits

How an Installed Downspout First Flush Device works

Watch the video clip of how a First Flush Water Diverter works here

If you need to divert a large volume of water from entering the cistern, order the bigger 12" kit. The kit photo and more details will be up shortly