The best replacement for salt water is chlorine pool.

The best alternatives to salt water are rated as following:
★★★★★  chlorine pool
★★★★  fresh water
★★★  chlorine
★★  chlorine pools
★★  sugar water
★★  fresh water aquarium
★★  saltwater
★★  water
★  fresh water drowning
★  plain water
★  mouthwash
★  hydrogen peroxide
★  fresh water pearls
★  freshwater
★  fresh water tanks
★  tap water
★  listerine
★  peroxide
  chlorine swimming pools
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  ozone pools
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  salty water
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  corsodyl
  eps chlorine pool
  sand filter
  chlorinated pool
  fresh water fish tanks

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

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



Google Trends

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