After moving home and finding that the tap water was particularly hard in our new house we decided to buy a Brita water jug! We had been in our new house for a while and even after buying a new kettle we had to descale it every couple of months! 
Reading reviews for Brita filter systems we opted for the water jug with filter, as soon as we started using it we noticed a massive difference in water smoothness! 
After using it for a month now it’s definitely made a fantastic difference in the water softness and the kettle remains crystal clear!