Tap water is delivered to your home or premises meeting the high standard of qualtity laid down in the regualtions. Unfortunatley some of the trace elements allowed and foreign particles from your own plumbing system can spoil the taste and the clarity of the water. A moderm water filter will remove these so you can enjoy water that clear and odour free. Choosing a specialist BWT cartridge you can add vital minerals like magnesium and zinc and even remove any microplastics.