Comparing Water Types
Freshwater vs. Brackish vs. Saltwater
Fresh water, otherwise known as "sweet water" is naturally occurring on the Earth. It comes in many forms in nature, such as: ponds, lakes, icebergs, glaciers, underground aquifers, etc. Fresh water makes up on 3% of all of the world's water, but is the most necessary water for most life on the Earth. Also, fresh water is home to nearly 10% of all known life on the Earth.
Brackish water, otherwise known as briny water, is a mix between salt water and fresh water. It has more salinity than not. Containing between 0.5 grams and 30 grams of salt per litre, it is easily mistaken for saltwater. Brackish waters typically appear when fresh water streams lead into a salt water body of water.
Salt Water is the last 97% of the water on Earth. Salt Water is ususally found in seas and oceans. Salt Water covers 70% of the world's surface. These salt water ecosystems are home to nearly 50% of all known life on the planet. This water is made up of about 3.5% salt by weight. Meaning, about one gallon of water should have 4.5 oz of salt.