Pollution Threatens Cooum River Restoration

Summary of Cooum River Pollution Issue in Tiruvallur District

Location and Context:

• Cooum River, nearing the Putlur check dam in Tiruvallur district, Chennai, facing ecological degradation due to sewage pollution.

Constitutional and Legal Framework:

• Residents have the right to a clean environment as per Article 21 of the Indian Constitution, which guarantees the right to life.

Pollution Sources:

• Urbanisation and lack of a functional sewage disposal system contributing to pollution.
• A dysfunctional sewage treatment plant (STP) adds to the problem, discharging untreated sewage into the river.

Impact on Groundwater:

• Groundwater quality is deteriorating; residents report discolored water from borewells near the riverbed.
• The river serves as a crucial source for irrigation and maintaining groundwater reserves.

Local Initiatives and Responses:

• Manavalan Nagar Residents’ Welfare Association raised concerns and submitted petitions for proper sewage treatment.
• The Tiruvallur municipality is installing a pipeline to discharge treated wastewater into the river.
• A new STP costing ₹10 crore is expected to be operational within one to two months to improve wastewater management.

Government and Municipal Action:

• P.Udhayamalar, chairperson of Tiruvallur municipality, emphasized actions to control odour at the current STP and to upgrade treatment technology.
• Use of Bacillus bacteria-based chemicals to enhance wastewater quality and reduce pollutants.
• Advanced soil biotechnology is proposed for improved sewage treatment.

Environmental Measures:

• Plans are in place for a ₹13 crore project to install shutters in the Putlur check dam to reduce siltation and help with water storage.
• Water Resources Department (WRD) is overseeing initiatives to ensure treated sewage quality remains within permissible limits.

Economic Indicators:

• The ongoing projects involve significant investment (e.g., ₹10 crore for new STP, ₹13 crore for check dam shutters) indicating state and municipal efforts to address environmental and water management issues.

Judicial Oversight and Regulatory Framework:

• Continuous monitoring of treated sewage quality as mandated by local government and WRD.

Biodiversity and Environmental Health:

• The downstream area is affected by water hyacinth proliferation, indicating ecological imbalance due to nutrient influx from untreated sewage.

Conclusion:

• The case highlights the critical intersection of urban development, environmental sustainability, and public health, necessitating robust infrastructure, community engagement, and continuous oversight to restore and maintain the ecological health of the Cooum River.