Microplastics in Groundwater in Delhi
A pioneering study commissioned by the Delhi government has revealed the presence of microplastics in groundwater samples across the city. This study, conducted by The Energy and Resources Institute (TERI), marks the first of its kind, highlighting a significant environmental concern for Delhi's water supply.
Key Findings
- Microplastics Detection: Microplastics were found in groundwater samples from almost all 11 districts of Delhi.
- Yamuna River Impact: Microplastics were also detected in the water and soil samples from the banks of the Yamuna River, indicating a leaching effect contributing to groundwater pollution.
Microplastics Definition and Concerns
- Definition: Microplastics are plastic particles less than 5 mm in diameter. They are categorized as primary (intentionally manufactured) and secondary (resulting from the weathering of larger plastics).
- Health Impacts: According to a 2021 UNEP report, chemicals in microplastics can lead to serious health issues, such as genetic changes and respiratory problems, particularly affecting women.
- Absorption and Exposure: Microplastics can enter the human body through air, water, food, and even skin contact. They have been detected in various human organs, including the placenta of newborns.
Challenges and Recommendations
- Water Treatment Limitations: Current water treatment systems cannot filter out microplastics, posing health concerns.
- Lack of Standards: There are no established safety limits for microplastics in water.
- Call for Transparency: Experts advocate for the government to release the study findings publicly to aid further research and solutions.
Further Research
The study, initiated in February 2024, is ongoing with post-monsoon data analysis as per the agreement with TERI. The interim findings were submitted in November to the government, awaiting public release.