Summarize the following:
If your water contains a lot of minerals, especially calcium, you can remedy the unpleasant taste by boiling the water before drinking. Fill a clean pot or kettle with water and place it on a stove burner set to high. Allow the water to boil for a few minutes. If you aren't sure if your water is hard, or if you want more specific information about the  minerals in your water, test it with water hardness testing strips. You can pick up testing strips at your local hardware store. Turn the heat off and allow the water to cool completely. You’ll likely see white sediment gather on the bottom of the pot or kettle. This sediment is made up of insoluble minerals, which can't be boiled away. Use a baster, siphon, or ladle to transfer the water to a clean container.  Although it's not harmful, try to avoid as much sediment as you can during the transfer.  Letting the sediment settle on the bottom first allows you to easily remove the clear water while leaving most of the sediment behind. Boiling water can cause it to taste flat. Pouring it back and forth between 2 clean containers for a few minutes will restore oxygen to the water, improving its taste. If you drink water straight from the tap often, boiling it every time may become a nuisance. Instead, try using a drinking water filter to purify your water before drinking it. Some filters attach directly to faucets, while others act as filters for pitchers. Water treated with a filter often has a better taste.  These filters can be bought at most grocery stores and general retailers. Look for systems that have a secondary filter, like one made from carbon or that uses reverse osmosis, to ensure contaminants are being removed from your water.

Summary:
Boil away impurities. Transfer the clean water to a container. Pour the boiled water back and forth between 2 containers. Remove impurities with a drinking water filter.