The best replacement for reverse osmosis is water softener.

The best alternatives to reverse osmosis are rated as following:
★★★★★  water softener
★★★★★  distilled water
★★★★★  distilled
★★★★  deionized water
★★★  distillation
★★★  filtration
★★★  filter
★★  carbon filter
★★  brita
★★  spring water
★  carbon filtration
★  berkey
★  water filtration
★  osmosis
★  alkaline water
★  carbon block
★  bottled water
★  uv filter
★  ionizer
★  kangen water
★  ion exchange
★  filtered water
  zero water
  ultrafiltration
  water filter
  forward osmosis
  filters
  deionization
  desalination
  carbon filters
  mineral water
  membrane filtration
  ionized water
  alkaline ionized water
  carbon
  evaporation
  water softeners
  deionized
  whole house filter
  brita filter
  ultraviolet
  charcoal filter
  steam distillation
  water filters
  aquasana

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

Other search terms related to reverse osmosis and their ratings are:
★★★★★ water softener
using water filters
water waste
waste water
softener
You have in mind a companion for reverse osmosis and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of reverse osmosis in all years. Click on graph for more.
reverse osmosis
water softener
distilled water