What Is Soft Water?

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Soft water is not physically soft, but soft water refers to the soluble mineral content of the water. Learn about soft water, which doesn't contain minerals that have been dissolved out of a rock structure, with help from a science teacher in this free video on physical science.

Part of the Video Series: Physical & Life Science
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Video Transcript

Hi, I'm Steve Jones and I'm going to explain what soft water is. Now just in the same way that hard water, hard woods are not hard woods and soft woods are not soft woods, then hard water is not physically hard water and soft water is not physically soft. Water is water. But hard and soft refers to the mineral content of the water, that is the soluble mineral content found in the water. Now we know that our water comes from underground and while it is underground, it absorbs various soluble products which are found in the ground, in the earth and in rocks and what happens of course if natural spring water comes to the surface, it comes to the surface having passed through various rock layers containing various minerals and if those minerals dissolve and those minerals are sometimes desirable then it is good to drink that water. What it does is give you a supply of that particular mineral which is important. Now a soft water area is an area where water doesn't come through various mineral bearing rocks, it just comes through a filter system maybe of sand or something like that and in fact contains very little dissolved material at all and certainly very few dissolved minerals. So basically soft water is water, natural water, spring water which doesn't contain minerals which have been dissolved out of the rock structure.

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