https://example.org/plumbing/index.html Everything about the plumbing system, including fresh water, grey water, toilet, heating, shower, sinks. Fresh water tank, what it’s for and how to fill it Grey water tank, how and where to empty it Maybe the location of the tank and its tap is different depending on the model? Shower Water heating, with links to the gas section How to check the levels of clean and grey water tanks Emptying the toilet How to tell whether it’s full how to empty it chemicals Hugo en