Freshwater vs Brackish vs Saltwater

By Matthew Stevens


  • Freshwater has very little salt content (less than 1%)
  • The majority of drinking water comes from freshwater sources
  • Freshwater sources include lakes, rivers, ponds, streams, etc.

Brackish Water

  • Brackish Water occurs when fresh and salt water meet
  • The level of salt in Brackish water is between that of freshwater and that of salt water
  • Brackish water sources include seas such as the Baltic and Caspian seas, and tributaries where rivers meet the oceans

Salt Water

  • Large salt content (about 35 grams of salt per liter of water) compared to fresh and brackish water
  • Salt water covers more than 2/3 of the earth's surface and contains many species of plants and animals