1. Raw water is simply water taken from the environment and could be fresh water, brackish water or saltwater.
2. Fresh water is typically less than 1% sodium chloride.
3. Brackish water is 1-2.5% sodium chloride.
4. Saltwater is typically around 3.5% sodium chloride.
5. Raw water requires treatment in order to become potable a.k.a. drinking water.
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