Question

what does ensure water is a renewable resource?

Answer 1

Water keeps on circulating in nature through various states of matter; in the form of liquid water, vapour and ice. Due to this, the water which disappears because of evaporation comes back in the form of rains. Thus,water becomes a renewable resource.

Answer 2

water can be considered a renewable material when carefully controlled usage, treatment, and release are followed. If not, it would become a non-renewable resource at that location. For example, groundwater is usually removed from an aquifer at a rate much greater than its very slow natural recharge, and so groundwater is considered non-renewable. Removal of water from the pore spaces may cause permanent compaction (subsidence) that cannot be renewed.