Freshwater (Fresh Water)

  1. Of, relating to, living in, or consisting of water that is not salty.
  2. Water with salinity less than 0.5‰ (parts per thousand) dissolved salts.
  3. Water that contains less than 1,000 milligrams per liter (mg/l) of dissolved solids; generally, more than 500 mg/l of dissolved solids is undesirable for drinking and many industrial uses.
  4. (Nautical) Accustomed to sailing on inland waters only as a fresh water sailor.