Cost of shipping a dimensional object wide makes this something to make on site. A roll bender, 2 steel pipe and 6 pvc pipe are the main materials. The larger the diameter the higher the yield in the area.
Richard -in this grey water system, it shows that of used water and of new water is used to flush toilets. This water system is environmentally sustainable because it uses used water from the sink so the water has a new purpose after its been used
These clever people are using shipping containers, dumpsters and rubbish skips to create family pools at low cost. And you can take them with you if you move! Here are the pools they made --> theownerbuilderne.