1. Hard water contain minerals such as calcium and magnesium.
2. Hard water does not easily lather with soap.
3. Hard water can also lead classified of faucets and pipes.
4. Hard water is good source of calcium and magnesium in the body. Hard water also reduces the solubility of toxic metal ions.

Soft water :
1. Soft water is water that has a higher sodium content and small concentration of calcium and magnesium.
2. It does not leave residue behind and provides are luscious later.
3. Soft water is not harsh on the skin, clothes and dishes etc.