"To be honest, I believe that collecting rainwater will become a thing of the past, as the seasons become dryer and dryer" - I stand by this comment !!
I live in the northeast of england and for the past year and more, we have had very little rain, so with no rain how can I fill waterbutts ? - Kinda useless bits of moulded plastic really - unless filled with rain.
During a long hot spell of weather, I can use at least 1 waterbutt plus, a day. I estimate that I have at least 10days worth of water for the garden - what do I do for the other 20days should it not rain during one month?
Cloudbusting !!
I do not collect rainwater as a token gesture, I seriously collect rainwater. If it wasn't for this extreme rainfall of late, my barrels would dry!!!!!