All over the world, there are self-sufficient families living away from the comfort (and chaos) of modern life. These families usually live in farms where everything necessary is accessible. They grow their own food. What about water? Most of them have at least one open water tank tower that provides them with all the potable water that they need.
Sure, they can just rely on a well to provide them with water. However, this presents a lot of potential problems. Wells can easily dry up. The water can get contaminated. In addition, getting water from it is a huge challenge because you're working against gravity instead of working with it.
This is why it's a much better idea to put up an open water tank tower. With the help of gravity together with a pressurized water supply system, it can easily supply potable water to anyone that requires it. The pressure is caused by the elevation of the water tank. The elevation causes hydrostatic pressure.
How does this work? For every 10.20 centimeters of elevation, 1 kilopascal of pressure is applied to the water and this helps a lot in the distribution. As you can imagine, more elevation results to more pressure. Roughly speaking, water elevated at 30 meters will result to 300 kilopascal of pressure - more than enough pressure for domestic use.
You don't need to live in a farm to take advantage of this. In fact, did you know that smaller water tank towers are installed in buildings in New York? You can take a look at this illustrated guide to see if you have enough area to make one. This guide will provide you with measurements together with an open water tank tower illustration.