Water and Sanitation Programmes Water and Sanitation Programmes are ongoing development within the Cook Islands. Below are the ongoing programmes happening in the Cook Islands. Water and Sanitation Programme Related Programmes Rarotonga Water Tank Subsidy Waste and Sanitation Improvement Programme Te Mato Vai - Rarotonga Water Upgrade Northern Water Improvement Project Strengthening Resilience of Island Communities (Pa Enua) Sanitation - Three Year Plan World Health Organisation (WHO)