Rainwater can easily be collected in a water butt and is better for  garden plants than tap water.
 
When installed using a drainpipe diverter  they require little maintenance. With the use of a diverter water from a  drainpipe is diverted into the butt until it is full. Once it is full  any further water is directed down the drainpipe to the ground drain.
 
Using a combination of products it is possible to collect and store  hundreds of gallons of rainwater, which can prove valuable for your  garden during dry summer months.