Finding a way out of India’s deepening water stress
NEWS In any new National Water Policy, the aim should also be to encourage conserving water resources and efficient usage
- The complexity and scale of the water crisis in India calls for a locus specific response that can galvanise and integrate the ongoing work of different Ministries and Departments through new configurations.
- Such an integrated approach should not be limited to the merger achieved between the two Ministries of Water Resources, River Development and Ganga Rejuvenation and the Ministry of Drinking Water and Sanitation, which led to the formation of the Ministry of Jal Shakti in 2019, rather it must cut across sectoral boundaries.
UNDERSTANDING SOURCES OF WATER USED
- Analysing India’s looming water crisis through the locus of ‘urban’ and ‘rural’ allows a better grasp of the causative factors and also enables a stronger grip on the strategies to be deployed to reverse the water crisis.
- For such analysis, preliminary understanding of the sources from which the country draws water to meet its varying needs is fundamental.
India’s Rural- Urban water usage:
- In the rural areas, 80%-90% of the drinking water and 75% of the water used for agriculture is drawn from groundwater sources.
- In urban areas, 50%-60% of the water supply is drawn from groundwater sources, whereas the remaining is sourced from surface water resources such as rivers, often located afar, in addition to lakes, tanks and reservoirs.
INDIA’S WATER CRISIS
- According to the composite water management index released by the think tank NITI Aayog in 2019, 21 major cities (including Delhi, Bengaluru, Chennai, Hyderabad) were on the brink of exhausting groundwater resources, affecting about 100 million people.
- The study also points out that by 2030, the demand for water is projected to be twice the available supply.
The Chennai example
- A significant example of the water crisis that unfolded was in Chennai in 2019, during which life came to a standstill and parts of the city went without piped water for months.
- A closer look at the factors that brought about the water crisis in Chennai is inescapable, should we gain a better grasp of the underlying problems, especially as this was a city which among others like Mumbai had suffered from floods previously.
FACTOR S RESPONSIBLE FOR CHENNAI WATER STRESS
- In the previous year Chennai received poor rainfall, which was 50% less than normal.
- The city has been built by incrementally encroaching floodplains and paving over lakes and wetlands that would have otherwise helped the process of recharging groundwater.
- Similar example can be cited from Mumbai in 2019, when 2,141 trees were felled at the Aarey colony, amid massive protests, to make space for a shed for the Mumbai Metro Rail Corporation Limited.
- The situation was further exacerbated by the loss of green cover to make way for infrastructure projects, which would have otherwise helped water retention.
- Such a situation, on the one hand, leads to flooding during normal rainfall due to stagnation, and on the other hand leads to drought-like conditions due to the prevention of underground water storage.
- It is only that this situation was more magnified in Chennai, but other cities in India would echo these manifestations in varying degrees owing to a lack of sustainable urban planning.
Need for synergy
- The Ministry of Water Resources must reconfigure its relationship with other Ministries and Departments (Urban Development, Local Self-Government and Environment).
- This would enhance integration and coordination through effective land and water zoning regulations that protect urban water bodies, groundwater sources, wetlands and green cover while simultaneously working to enhance waste water recycling and water recharge activities targeting aquifers and wells through rainwater harvesting.
Coordination at the each level
- At the sectoral level, the Ministries and Departments of water resources must coordinate efforts with their counterparts in agriculture, the environment and rural development for greater convergence to achieve water and food security.
- At the disciplinary level, governance and management should increasingly interact and draw from the expertise of fields such as hydrology (watershed sustainability), hydrogeology (aquifer mapping and recharge) and agriculture sciences (water-sensitive crop choices and soil health).
Lessons from rural Punjab
- The acute water crisis in Punjab shows that the situation is no different in other states.
- The draft report of the Central Ground Water Board concluded that-
- Punjab would be reduced to a desert in 25 years if the extraction of its groundwater resources continues unabated;
- 82% of Punjab’s land area has seen a huge decline in groundwater levels, wherein 109 out of 138 administrative blocks have been placed in the ‘over exploited’ category.
- Groundwater extraction which was at 35% in the 1960s and 1970s, rose to 70% post the Green Revolution — a period which saw governments subsidising power for irrigation that left tubewells running for hours.
- With such subsidies, cultivation of water intensive crops such as paddy have further aggravated water depletion, even turning water saline.
- Hence, Immediate measures need to be taken to manage and replenish groundwater, especially through participatory groundwater management approaches with its combination of water budgeting, aquifer recharging and community involvement.
Attaching equal importance surface water conservation
- The importance given to groundwater conservation should not ignore surface water conservation including the many rivers and lakes which are in a critical and dying state due to encroachment, pollution, over-abstraction and obstruction of water flow by dams.
- The Ministry of Jal Shakti, last year, had announced an ambitious plan to provide water connections to every household in India by 2024.
- In view of the ongoing erosion of water resources and an ever-increasing demand for water, the thrust should not be on promising water supply.
- Instead the aim should be towards protecting and conserving water resources on the one hand and minimising and enhancing efficiency of water usage on the other.
- As the expert committee constituted under the Union Water Resources Ministry drafts a new National Water Policy, one hopes it would be rooted in locus specific realities and allows greater flexibility for integrating the insights and work of multiple departments and disciplines making way for new configurations to sustainably manage the country’s water resources.
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