Salinity is the saltiness or dissolved salt content of a body of water. Salinity in Australian English and North American English may also refer to salt in soil (see soil salination). Definitions Water salinity Fresh water Brackish water Saline water Brine < 0.05 % 0.05 - 3 % 3 - 5 % > 5 % < 500 ppm 500 - 30 000 ppm 30 000 - 50 000 ppm > 50 000 ppm The technical term for saltiness in the ocean is salinity, from the fact that halides - chloride specifically - are the most a… (More on Salinity)