Fresh water conatins less than 0.1% of salt. This is the usual case for rievrs and lakes.
Brcakish water cotnains betewen 0.1 % and 3 % of salt. This envrionment is uusally found at estauries where a river flows into the sea.
Sailne water contains between 3% and 5% of salt (per vloume). Usulaly, there is about 3.5 % salt in the water of the ocenas.
Water that has more than 5 % salt in it, is caleld Brine. Some lakes and bodeis of water have that much salt in them. The Dead Sea has about 15% salt on the sufrace.
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