Santa is correct. The various impurities in the water are what give it taste.
Our water is extremely hard, calcium and magnesium carbonates, but the taste is good. It is 'hard' on humidifiers and the like, many people use some device at the tap. Others use water softening equipment. We found that for most purposes this was a waste of money; better to buy distilled water at the grocery for the steam iron and to clean your lps, etc.