potable water

• potable water - safe to drink

  • not the same as pure water but still safe
  • low levels of microbes
• making waste/ground water potable

  • sedimentation - large insoluble particles sink to the bottom of the water
  • filtration - water is filtered through sand to remove small insoluble particles
  • chlorination - chlorine is added to kill microbes
• making sea water potable

  • filter the water
  • boil it
  • condense the water vapour
• water used in experiments must be pure because salts reacting with the substances can affect the results of the experiment