I filled this and drank from it a total of four times. Then it fell out of my bag in a hotel room and the plastic lid shattered. So I put it in the bin. I wouldn't want another. Heavy, filter takes a lot of space, and the advice when I got it was to only use it for filtering potable treated tap water. I had looked for and not found details on the website for what it filters and assumed it was the same standard as their gravity filter. It's not. BTW the plastic lid is poor design. I am buying a gravity filter system from a competitor which comes with a metal spigot, as doulton's default is also a plastic one in their gravity filters. Not that impressed, marketing and price exceeds quality