The Indian government is developing a new program under the country’s urban flagship programs referred to as Jal Jeevan Mission – Urban. The program is being implemented by the Ministry of Housing and Urban Affairs (MOHUA) and The Asian Development Bank (ADB) is planning to provide support. FutureWater contributed by undertaking an initial Climate Risk Assessment for the program
FutureWater has undertaken a country wide climate risk screening as starting point for further project specific assessments. Main conclusions in the context of the program objectives were that by increased temperatures water supply will be challenged by the risk that water demand will increase and that at the same that supply will reduce by higher evaporation from catchments. Also waste water treatment will face the risk of reduced efficiencies.
India’s number of warm days and nights are expected to increase up to 70%. Water supply, wastewater treatment and urban water bodies will face same challenges as by increased temperature but more intense during those days. Similarly, heat waves are projected to be 3 to 4 times higher by the end of the twenty-first century. The result will be that water supply, waste water treatments and urban water bodies will face same challenges as under increased temperature but even more pronounced during those heat wave periods.
An increase in mean precipitation is uncertain according to various climate projection. If this increase will happen the impact on the three program components (water supply, waste water, urban water bodies) will be manageable. However, a decrease in mean precipitation is projected as well according to some climate scenarios. If this will happen then water supply will be at high risk of water shortages by a higher demand from users and a reduction in supply from rivers, streams and in the longer run from groundwater. An increase in daily precipitation extremes is quite likely to happen according to most climate scenario. Risk of additional flooding will increase.
The analysis concluded that since the location where projects will be implemented in the context of this program has to be defined yet, only generic conclusions relevant for the entire country could be provided. It was highly advised that for each specific project that will be implemented a detailed Climate Risk Assessment has to be undertaken.