Discuss the significance of treated wastewater reuse in addressing India's water stress. Examine the policy models adopted by Uttar Pradesh and Uttarakhand.

With per capita water availability shrinking and groundwater over-extraction widespread, India's water security now depends less on new sources than on recycling what is already used. Treated wastewater reuse converts a disposal liability into a dependable resource, and States are finally beginning to codify it.

Significance in addressing water stress

• Substitution of freshwater: treated water can serve non-potable demand — agriculture, industry, construction, urban landscaping and ecological restoration — freeing fresh sources for drinking [3]. The Power Tariff Policy, 2016 already obliges thermal plants to use STP water within a 50 km radius [1].
• Pollution abatement: reuse cuts untreated discharge, reducing river pollution load and supporting Namami Gange/Arth Ganga river rejuvenation goals [1][3].
• Drought-proof supply: sewage flows are perennial and climate-independent, giving industry and peri-urban farmers reliability that canals and aquifers cannot [5].
• Circular economy shift: it replaces the "treat-and-dispose" mindset with resource recovery, a stated aim of the National Framework for Safe Reuse of Treated Waste Water [2].

Uttar Pradesh: a phased, target-driven model

• Cabinet-approved Safe Reuse of Treated Water (SRTW) Policy, 2026, drafted by the State Mission for Clean Ganga with technical review by the Centre for Science and Environment [4].
• Graded targets: 50% reuse by 2030 where STPs are operational, rising to 100%; and 30% by 2030 in areas lacking functional STPs [4] — realistic sequencing rather than a uniform mandate.

Uttarakhand: a terrain-sensitive regulatory model

• Notified SRTW policy covering industrial processes, construction, flushing and irrigation of parks and green spaces [3].
• Its strength is institutional clarity — defined roles for departments, urban local bodies and industries — and adaptation to hill-versus-plains realities [3].

Together, the two illustrate that a national framework yields results only when States contextualise it. Adoption remains the exception; extending enforceable, use-specific quality standards and blended-finance models to all States, as NITI Aayog urges [1], would make reuse central to water security under Viksit Bharat 2047.