Water Tanks Pumps and Irrigation

Archive for March, 2010

The first rainfall after a dry period usually collects most of the contaminants on your roof.

Installing a ‘first flush’ or other diversion system will prevent this water from entering your water tank. This first flush water can be stored separately and used for non-drinking purposes such as garden watering.

First Flush Water Diversion

Fitting an appropriately sized First Flush Water Diverter is critical to achieve good quality water. Water Diverters improve water quality, reduce tank maintenance and protect pumps by preventing the first flush of water, which may contain contaminants from the roof, from entering the tank.

For a water diverter to work effectively, the contaminated water in the chamber must be sealed off. This prevents the water passing to the storage tank and ensure the water does not “syphon” off the contaminated water in the chamber. The simplest and surest way to do this is with a floating ball and seat.

A slow release valve ensures the chamber empties itself after rain and resets automatically. The diverted water need not be wasted water because the drain pipe from the diverter chamber can be fitted to a standard drip irrigation system.

To order your tank or a first flush systen contact us here.