Another way to save on water bills?

Rsuppards

Climate change has changed rainfall patterns with (largely) milder wet winters and dry, if not hot, springs and summers.  With increasing fresh food prices, many people have become tempted to "grow your own".  Drier springs and summers place increasing pressure on those "gardeners", even if they are only using balconies or window boxes to grow using mains water supplies.  For all the assistance water companies offer consumers to save water, there's very little mention of advice or assitance for domestic "growers".  For example, many might be tempted to buy water butts or something similar to collect excess rainwater but may not have the knowledge or manual skills or, for the disabled, dexterity to fit one. 
Even a modest veg, patch with a couple of potato bags, a few rows of salad leaves and some brassicas, beans or root veg would need several litres of water every couple of days, particularly in the current dry spell.
Could or should water companies be encouraged to explore this as another method of helping their customers save water? 

chrisco47

Having water butts also entitles you to a rebate but my water company Anglian are not very generous they will only deduct £35 per year