The best replacement for fresh water is salt water.

The best alternatives to fresh water are rated as following:
★★★★★  salt water
★★  salt water density
★★  salt water fish
★★  salt water drowning
★  salt water boats
★  salt water aquarium
★  sea water
★  salt water evaporation
★  salt water aquariums
★  freshwater
★  warm sea water
★  salt water freezing point
★  salt water fish tanks
★  salt water drownings
  salt water pool
  salt water pools
  salt
  ea water
  ocean water
  salt water tanks
  fresh water
  seawater
  potable water

Your alternative for fresh water is not listed? Suggest!
Speaking about fresh water, one probably shouldn't forget about humans life.

Other search terms related to fresh water and their ratings are:
★★★★★ humans life
★★★★★ salt water
You have in mind a companion for fresh water and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of fresh water in all years. Click on graph for more.
fresh water
salt water
salt water density