Food info - Carriers
Improving the water quality
A regular cleaning program for the roof, gutters and tanks will help reduce the organic load and bacterial contamination of the water supply. The installation of "first flush" devices are recommended to divert the first run-off from the roof into the tank after a long dry period. The first water washed from the roof contains higher levels of contaminants from dust, leaves, bird droppings etc., and is best diverted away from the water tank. Filters can also assist in reducing sediment and organic matter provided they are well-maintained and replaced regularly. Water can be further treated to destroy bacterial contamination through either boiling, ultra-violet treatment, chlorination or ozone.