The Slimline filters specially made for emergency preparedness are ideal for use with just about any water source including lakes, rivers, streams, ponds, rain and tap water. The ProOne® G2.0 SLIMLINE “All-In-One” Water & Fluoride filter combines a silver infused white ceramic outer shell with new ProSorb™ media for removal of fluoride and other heavy metals. In addition to primary contaminants, only the ProOne® G2.0 Water & Fluoride filter elements help reduce or remove pesticides, herbicides, chloramines. The ProOne® G2.0 filter is easy to install, use and clean – no priming required and no additional filters necessary to remove fluoride. The new ProOne® G2.0 Water & Fluoride filter elements are tested to meet NSF/ANSI standards 42 & 53 standards. Leaves good minerals, including calcium, in water.