The best salt brands to use for a water softener will depend on the mineral levels in the hard water and a person's water softening needs, states Morton Salt. Examples of water softener brands include Morton and Ecowater. Types of salt used as softeners include rock salt, solar crystal salt and evaporated salt.
Ecowater solar crystal salt has the least amount of impurities of all solar crystal salt brands, notes Crystal Clear Water. It is created by evaporating seawater in the sun.
Morton brand has several salt products to be used as water softeners: System Saver II, Rust Remover, Solar Salt and Rock Salt. Rust Remover Salt is a good option for water with high amounts of iron.