A lot can happen until the clean water come to your home. The pipes can be old and rusty; the system may be leaking and many others. It is better to filter the water you are intending to drink. You can always buy prefabricated filters and filtration systems from the store. However, some people prefer to make their filters at home. This is much cheaper than buying one and in this recession every dollar counts.There are two different ways to construct homemade water filters. Some people prefer to create one with manufactured parts bought from shops. The others want to go old school creating their own components from everyday household items. In either case, the parts needed to make your own water filter are pretty easy to assemble.
Cut the bottom of a liter bottle. Cut a hole in the lid and insert the straw into the hole so the filtered water will flow out of the straw. Insert cotton batting or cheesecloth at the bottom of the bottle. Now you have to start adding different layers, the first is charcoal granules. The next layers have to be fine grain sand and one more with larger grain sand. Then you have to add gravel, start with fine grain gravel followed by larger grain gravel. Top the layers off with the coffee filter.