Water is important for more than just soothing thirst-it also gives you vital nutrients. The presence of pollutants in water, though, can harm your health. This is why its important to consider both the method of water purification and the way you store water. The practise of many of us to keep water in plastic bottles causes more harm than benefit. Plastics are full of dangerous chemicals like BPA, which can cause a number of ailments. Keeping water in stainless steel bottles is a wise choice.