Table 1 Total costs and abatements of water quantity management options under different climate and socio-economic scenarios in 2050
From: Water quality management could halve future water scarcity cost-effectively in the Pearl River Basin
Management options | RCP2.6-SSP2 | RCP8.5-SSP2 | RCP8.5-SSP5 | ||||
---|---|---|---|---|---|---|---|
Sector | Water quantity options | Costs ($ billion) | Water saving (billion m3) | Costs ($ billion) | Water saving (billion m3) | Costs ($ billion) | Water saving (billion m3) |
Agriculture | Low-pressure pipe irrigation | 0.25 | 11 | 0.25 | 11 | 0.25 | 11 |
Households | Water-saving bathroom faucet | 2 | 0.09 | 1 | 0.04 | 2 | 0.09 |
Water-saving kitchen faucet | 2 | 0.43 | 2 | 0.43 | 2 | 0.42 | |
Water saving showerhead | 11 | 0.74 | 11 | 0.74 | 11 | 0.73 | |
Water-saving washing machine | 38 | 0.54 | 3 | 0.05 | 63 | 0.9 | |
Water infrastructure improvement | Water storage | 153 | 212 | 118 | 164 | 118 | 164 |
Water transport | 3 | 56 | 1 | 17 | 1 | 14 |