The point that Jay is making is there is an option available here should you need it.
I, like probably all of us produce my own water, however, you may get caught short, use more water in a day than expected and want an easy option.
Yes we can tap straight into a main supply and DI our own, but the impact on the resin cannister in the vehicles is very high compared to running TDS of 5/6 through.
I work heavily in southampton and will bear this in mind as sometimes we do run dry.
Thanks,
Trevor
Luke, you will be charged for the water you run from your house like everyone else?