The community's water security coordinator David Hebblethwaite conveyed the message to a conference of the Pacific Water and Wastewater Association, currently underway in Apia.
Mr Hebblewthwaite said the success of projects in atoll countries like Tuvalu and Kiribati could be shared with bigger nations.
"Sharing approaches to drought management, to drinking water safety, to ground water management and management of rain water harvesting, we're hoping that can continue broader than just in the atolls and to some of the smaller communities in the larger countries too."
