What is a First Flush? Is there one perfect type of First Flush device? where di I put the First Flush on my rainwater catchment system?
First Flush or Rain Diverters, as the name implies, flush off the first water of a storm before it enters the storage tank. This is the water that could be the most contaminated by particulars, bird droppings, and other materials laying on the roof. Eliminating these contaminants before they enter into your storage and conveyance system is the critical to keeping rainwater clean.