A diverter can be installed just before your tank or near the downspouts. As it begins to rain and water comes down from the roof and gutters it flows from pipes into the diverter. The diverter fills up with the first flush of rain from the roof. Once the diverter is full, the cleaner water flows into the tank.

What is first flush device?

A first flush diverter is a device or plumbing assembly that takes first rainwater which carries most of the dirt from your roof and diverts it from the storage tank. Generally speaking, the more water is diverted, the better the quality of the rainwater that ends up in the storage tank or recharge zone.

How long should a first flush diverter be?

Rain Harvesting First Flush Diverters are sold in kit form – just add the desired length of standard 3”, 4” or 12” PVC pipe to create the diverter chamber section.