Water that is safe to drink.
In-game description

Potable water is water that has been purified of harmful pathogens that could cause disease such as dysentery.

Clean water can be found as bottles in various locations or reclaimed from toilets and basins.

Unsafe water can be purified by treating it with water purification tablets or by boiling it on a fire.

Boiling takes 20 game minutes per half liter (.13 gal). The same amount of purified water will boil away after about 30 minutes.

Food and drink
Canned Condensed milkDog foodPinnacle peachesPork and beansTomato soup
Animal meat Black bearMooseRabbitVenisonWolf
Fish Coho salmonLake whitefishRainbow troutSmallmouth bass
Plant Cat tail stalk
Miscellaneous Beef jerkyCandy barEnergy barGranola barMilitary-Grade MREPeanut butterSalty crackersTin of sardines
Water UnsafePotable
Soda OrangeGrapeSummit
Miscellaneous Herbal teaCoffeeEnergy drink