Yup. A straw. If you still believe the hype and want to filter your water, take along a straw and drink directly from a cup or water source. Good for up to 20 gallons:
The Frontier Filter can be used to drink from any bottle or cup, or directly from water sources. Removes contaminates down to 2 microns in size including wide spread pathogens such as giardia, cryptosporidium and large bacteria.