I wouldn’t buy a plastic kettle again after using this. I’ve used it for too long, but the plastic being heated and then cooling down breaks down the chemical composition of the plastic into a crumbly granulated material which you could easily mistake for limescale, and then you are ingesting this material. I imagine it is very bad for you. I used pliers to break away the material around the spout and it fell apart like plastercine crumbling into thousands of plastic particles. I’ve been drinking this for 5 years.  Always buy stainless steel