a to 6c several configurations for the containers 12 are shown different configurations of both the shape of the containers 12 and configuration of the extraction manifolds 24 are shown fig6 a i and 6 a ii show an embodiment of the system in an empty state and a full state respectively with the extraction manifolds 24 positioned within the container 12 a vertical support 34 projects from the rigid base 36 of the container 12 and in use supports a flexible membrane 38 of the container 12 when the container 12 is in an empty state each of the manifolds 24 are attached to an attachment mechanism 32 which is integrated into the support 34 the positioning of the manifolds 24 on the support 34 with the attachment mechanism 32 assists in maintaining the flow of water by preventing the flexible membrane 38 from obscuring the water ports on the extraction manifolds 24 the container 12 is also provided with a pressure relief valve 44 the pressure relief valve 44 prevents damage to the container 12 if excess water pressure builds up within the container 12 an alternate embodiment of the system in both an empty and full states is shown in fig6 b i and 6 b ii in this embodiment four extraction manifolds 24 two inlet and two outlet manifolds float at a distal end 40 of a vertical support member 34 which projects from a rigid base 36 of the container 12 in this embodiment as the container 12 moves towards an empty state a.