September 23, 2008 
Most bulk water bottles now sold are made of polycarbonate, a clear, blue-tinted plastic. They are available in 2, 3 and 5 gallon sizes. These are strong, long-lasting and relatively safe. However, they have been found to leach trace amounts of a chemical that can affect hormones in the body. If polycarbonate bottles are used for dispensing/storing water, it is recommended they not be used with demineralized water which is chemically aggressive and can cause more leaching. (Demineralized water is water that has been treated by distillation, deionization or reverse osmosis). Glass bottles are generally a better choice, especially for demineralized water. They’re available in 1 and 5 gallon sizes, and they can be ordered and shipped to your residence. Typically, costs for bottles are $15 to $20 per 5 gallon bottle, plus $10 to $20 for shipping. Costs for smaller range from $5 to $10.
There are several models of miniature pumps available that fit onto the necks of water bottles. These enable you to draw water from a bottle that is standing upright, so you don’t have to tip the bottle for pouring. Manually operated pumps have a plunger that you move up and down like a bicycle pump. Battery-driven pumps do the work for you. Less expensive but equally efficient ceramic and plastic dispensers that support upside down water bottles are also available.