I have always treated my water and still do. I have recently acquired a pH meter and makes brewing much easier.
I use soft water, with little mineral content and with the help of Bru'nWater and the pH meter, my latest 10 batches turned out better than ever before ( I am a new brewer, with only 29 batches under my belt ). I had Pale Ales, Bitters and some Red ales turn out great after 15 days in the bottle and were still great/crisp 2 months after. ( this is not all due to water treatments, but it surely does help )
I use soft water, with little mineral content and with the help of Bru'nWater and the pH meter, my latest 10 batches turned out better than ever before ( I am a new brewer, with only 29 batches under my belt ). I had Pale Ales, Bitters and some Red ales turn out great after 15 days in the bottle and were still great/crisp 2 months after. ( this is not all due to water treatments, but it surely does help )