I have this system and love the water that comes from it and use it exclusively for my drinking water.  The design of this product however is not well thought out.  The top sits loosely on it and doesn't seal or snap into place making it move or fall off every time you touch the container.  I have resorted to duct taping the back portion down and only have the front flap portion available which in product design, should have been something the creator came up with.  If Zerowater came out with a new top system I would likely replace the one I have.