absolute best https://www.megahome-distillers.co.uk/316-steel-water-distiller
Went for these many years back:
https://www.brita.co.uk/water-filter-system/water-filter-tap-solutions/integrated-water-filter-tap
So convenient and also inexpensive after the intial installation cost
https://www.brita.co.uk/water-filter-system/water-filter-tap-solutions/integrated-water-filter-tap
So convenient and also inexpensive after the intial installation cost