We live on a boat and people often ask us what happens to the human waste. Here’s the answer. The waste is sucked out of the boat’s holding tank and is taken away to be disposed of correctly (and legally). Devices such as these are known as [delightfully] ‘poo suckers.’ The poo sucking process is quick, easy and hygienic. The human waste in the holding tanks is often known as ‘black water’. Water from the shower and sinks is known as ‘grey water’.
