A recent environmental study conducted by researchers at Cochin University of Science and Technology (Cusat) has raised serious concerns over the increasing levels of microplastic pollution in Kochi’s urban drainage systems. Scientists warn that the contamination is posing a growing threat to aquatic ecosystems, public health, and the fragile water network connected to Vembanad Lake.
According to the study, researchers collected water and sediment samples from multiple drains and canal systems across Kochi. The findings revealed alarming concentrations of microplastics in both flowing water and accumulated sediments, especially in densely populated urban zones.
The study identified major pollution hotspots in areas connected to the Perandoor-Thevara canal and Mullassery canal systems. Researchers observed that plastic waste entering drains eventually reaches the Vembanad Lake ecosystem, where it may affect fish species, aquatic organisms, and long-term water quality.
Experts linked the rising pollution levels to:
- Improper disposal of plastic waste
- Urban runoff during rainfall
- Vehicle tyre wear particles
- Lack of scientific drainage treatment systems
Environmental scientists warned that microplastics can absorb toxic chemicals and spread pollutants through aquatic food chains. Previous studies in the region have already detected microplastic contamination in fish samples collected from Kochi’s estuary areas.
Researchers are now urging authorities to strengthen:
- Plastic waste management systems
- Scientific urban drainage treatment
- Pollution monitoring mechanisms
- Public awareness campaigns
The findings have intensified environmental concerns in Kochi, especially as rapid urbanization and increasing plastic consumption continue to place pressure on the city’s water bodies. Experts believe immediate intervention is necessary to prevent long-term ecological damage and contamination of food and drinking water sources.
Authorities are expected to review the findings as part of broader environmental management and urban sustainability discussions in Kerala.
