Circular Water Economy in India: Addressing Water Scarcity Through Wastewater Reuse

16 Jun 2026

India is facing increasing water stress due to Heat waves, Population growth, Urbanization and Climate change

Thane faces a significant daily water deficit, highlighting the growing challenge of urban water scarcity.
Effective reuse of treated wastewater can substantially reduce this deficit and lessen dependence on freshwater resources.

Water Availability Indicators

Per Capita Water Availability	Situation
Above 1700 m³	Comfortable
Below 1700 m³	Water Stress
Below 1000 m³	Water Scarcity

By 2050, India’s per capita water availability is expected to fall close to the water-scarcity threshold.

A Circular Water Economy is a sustainable approach to water management that emphasizes the principles of Reduce, Reuse, and Recycle.
Instead of following the traditional “use-and-discard” model, it promotes the treatment and reuse of wastewater for various purposes, thereby minimizing water wastage, reducing pressure on freshwater resources, and enhancing long-term water security.

Treated water can be used in:

These are examples of non-potable uses.

Economic Benefits
- Creates a potential market of ₹3 lakh crore in wastewater treatment and reuse.
- Attracts significant private investment in treatment plants, recycling infrastructure, and water-management technologies.
Employment Generation
- Expansion of water-reuse infrastructure could create around 1 lakh jobs by 2047.
- Employment opportunities would arise in plant construction, operations, maintenance, engineering, and environmental services.
Reduced Water Stress
- Reusing treated wastewater reduces pressure on rivers, reservoirs, and groundwater sources.
- Helps improve water security by making more freshwater available for drinking and other essential uses.

City-Specific Reuse Plans: Cities should adopt tailored water-reuse strategies based on their specific needs, such as protecting water bodies in Chennai, meeting construction demand in Thane, and supporting industrial requirements in Surat.
Promote Hybrid Financing: Expand the use of the Hybrid Annuity Model (HAM), where the government provides initial funding, the private sector invests the remaining amount, and both share the project risks.
Improve Sewage Treatment Plants (STPs): Strengthen the performance of STPs by addressing issues such as poor maintenance, staff shortages, inadequate infrastructure, and power supply constraints.
Adopt Zero Liquid Discharge (ZLD): Industries should treat wastewater internally and prevent the release of toxic effluents into public sewage networks and water bodies.
Launch a National Circular Water Mission: Promote decentralized treatment plants, establish dedicated water-reuse agencies, enhance water conservation awareness, and recognize water as a valuable economic resource to ensure sustainable water management.