potable water

there are many kinds of drinking water. all of them are freshwater. they are the tap water, rain water, mineral water, spring water, alkaline water and many others. tap water is water from the faucet. their sources maybe comes from lake, river, aand underground water. many people do not drink tap water. accordingly, tap water has so many impurities which are not good for the health. some of these are chlorine, microorganisms and other heavy metals. some people filter the tap water to remove the impurities so thatthey can drink it. rain water is another source of drinking water. in cities where there are heavy pollution, it is not advisable to drink rain water because it contains so many impurities taken from the air. but in rural areas where the air is clean, the people can drink it. but it has less minerals in it. spring water is water from the underground and it is full of minerals. as we know minerals are healthful. they are good for the body. there are companies who sell this in bottles. they are known as mineral water. we have also the alkaline water. accordingly this is the most healthful of all the drinking water. the ph of this water is high that is why it is called alkaline water. the spring water and the mineral water can be also an alkaline water. the minerals contribute to making it alkaline.