Answer:
Trapping or storage of water in tanks or wells
Damming of rivers to allow for more effective management of water
Treatment and recycling of used water
Prevention of water pollution by sewage and chemical from industries and homes
Explanation:
Trapping or storage of water in tanks or wells helps to reserve water for when their are less or no income of flow of water from the source
Damming of rivers to allow for more effective management of water helps to avoid continuous wastage of outflow of water from other water bodies which can be reserved for other usage and purpose
Treatment and recycling of used water helps to renew used water for re usage in the absence of new inflow of water
Prevention of water pollution by sewage and chemical from industries and homes: It helps to reduce the risk of contaminating our water for proper or domestic usage
