Cleaning Yamuna: More Than Just Money
Background
The Yamuna River, one of the holiest and most polluted rivers in India, flows through Delhi and receives massive amounts of untreated sewage and industrial effluents.
Despite multiple phases of the Yamuna Action Plan since 1993, the river’s water quality remains critically poor.
The Centre for Science and Environment (CSE), Environmental Policy Think Tank, has highlighted that infrastructural investments alone are insufficient without systemic planning and data-backed strategies.
Key Issues Identified has obstacles
-
- Data Deficiency: Lack of census and unrecorded water use (groundwater, tankers) hampers planning. Eg., No accurate data on Delhi’s total wastewater generation.
- Sewage Management Challenges:
- Direct discharge of faecal sludge into drains/rivers. Mixing of treated and untreated sewage in drains.
- Inadequate interception of sewage from unauthorized colonies.
Assessment of Government Efforts
- Achievements:
- Increased STP (Sewage Treatment Plant) capacity.
- Sewer pipeline projects in unauthorized colonies.
- Tighter norms for industrial effluents.
- Limitations:
- Poor quality of effluent treatment in Common Effluent Treatment Plant (CETPs)
- Untreated industrial waste, unclear disposal paths.
- No improvement in dissolved oxygen or visible water quality.
- Failure of the interceptor drain strategy occurs when inadequate coverage, poor maintenance, and lack of proper sewage treatment
Centre for Science and Environment’s 5-Point Action Plan
- Faecal Sludge Management: Register and monitor desludging tankers. Prioritize cost-effective tanker-based treatment over costly sewer networks.
- Avoid Mixing Treated Water: Prevent treated water from entering polluted drains.
- Promote Reuse of Treated Wastewater: Only ~10% currently reused, maximize reuse to reduce pollution load.
- Upgrade Sewage Treatment Plants with Reuse Plan: Redesign effluent standards for safe reuse.
Cleaning Yamuna requires a comprehensive, data-driven, decentralized approach, not just infrastructure spending.
Focus must shift to efficient faecal sludge management, reuse of treated water, and real-time monitoring of effluents and sludge transport systems.
