India’s water plants are failing to catch elusive ‘forever chemicals’
Many studies from different parts of India have already found PFAS in water sources. Conventional water treatment systems that can remove these compounds are not yet commercially available even as the extent of PFAS contamination across India remains unclear
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Context
A 2025 review in the Journal of Hazardous Materials Advances highlights a critical gap in India's water treatment capabilities: the inability to effectively remove Polyfluoroalkyl substances (PFAS), also known as 'forever chemicals.' Despite evidence of PFAS contamination in water sources across several states, the national extent of the problem remains poorly defined due to inconsistent testing methods and a lack of commercially available, effective treatment systems.
UPSC Perspectives
Environmental
The persistence of Polyfluoroalkyl substances (PFAS) presents a unique and severe environmental challenge. These synthetic compounds are characterized by strong carbon-fluorine bonds, rendering them highly resistant to degradation, which is why they are termed forever chemicals. They accumulate in soil and water sources, leading to long-term bioaccumulation in the food chain. This issue highlights a gap in current environmental management frameworks, particularly concerning emerging contaminants (pollutants whose risks are not yet fully understood or regulated). For UPSC Mains, candidates must understand that traditional water treatment processes are inadequate for these chemicals, necessitating advanced (and often expensive) technologies like activated carbon filtration or reverse osmosis. Furthermore, the lack of standardized testing protocols across India, as noted in the study, hinders the 's ability to establish a comprehensive national baseline for PFAS contamination, which is a prerequisite for effective policy intervention.
Health and Social
The presence of PFAS in water sources directly implicates public health, touching upon the fundamental Right to Water, which has been read into the Right to Life under of the Indian Constitution. Prolonged exposure to PFAS has been linked in global studies to adverse health effects, including immune system suppression, developmental issues in infants, and increased risk of certain cancers. In India, where a significant portion of the population relies on groundwater or municipal supplies that may lack advanced filtration, this poses a hidden, widespread health crisis. The challenge is exacerbated in industrialized states like Gujarat and Maharashtra, where these chemicals are heavily used in manufacturing. UPSC aspirants should connect this issue to broader themes of environmental justice, recognizing that vulnerable populations often bear a disproportionate burden of industrial pollution, and the government's obligation to ensure safe drinking water under initiatives like the .
Governance and Regulatory
Addressing PFAS contamination requires a robust, science-based regulatory approach, an area where India currently struggles with these specific compounds. The situation underscores the limitations of the existing regulatory framework, such as the and the , which may not explicitly target these newer, persistent synthetic chemicals. The review's finding that the national extent of contamination is 'poorly defined' due to inconsistent testing methods highlights a critical failure in environmental monitoring infrastructure. Effective governance requires the standardization of analytical methods across research and state pollution control boards. From a policy perspective, India needs to consider adopting stringent standards similar to those being proposed by the US or the European Union, which are increasingly restricting the manufacture and use of PFAS. This also involves incentivizing the development and commercialization of advanced water treatment technologies through government-industry partnerships.