- The Liscia water filter jug from Aqua Optima is handy and perfectly fits most fridge doors - Its 2.5 litre jug capacity and 1.2 litre filtered water capacity makes your hot and cold beverages taste better - You get three cartridges that will last up to 90 days, so you'll be sorted for months till your next purchase - Refilling is quick and easy - with a flip-up lid, there's no need to take it off completely - Made from food grade BPA free plastic, it's 100% safe and non-toxic for your family