l'escargot
New member
Because they use them and pack them away again. It is less likely that they will go off leaving their own hose dangling in the water.How does removing the hose help? Presumably people are still connecting hoses to fill tanks!! Has no-one heard of double check valves?
Water supply is regulated to prevent contamination, read about it here: http://www.wras.co.uk/PDF_Files/IGNMarinas.pdf, as long as the marina supply meets the regulations they can have houses out.
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