In re Karaipudur Common Effluent Treatment Plant Pvt Ltd (GST AAR Tamil Nadu)
Introduction: The case of Karaipudur Common Effluent Treatment Plant Pvt Ltd (GST AAR Tamil Nadu) has brought to light pertinent questions related to the classification of supply outputs and the nature of treated water under GST. Through this article, we aim to provide a detailed analysis of the case, its implications, and the broader GST context.
What Was the Issue?: The main crux of the matter revolved around two primary questions:
- Should the supply of outputs be classified as the sale of goods?
- Is the classification of water sold, which does not contain added sugar or is not flavored and is not packaged in 20-litre bottles, correct under heading 2201?
Background: The Role of Karaipudur CETP: The Karaipudur CETP plays a pivotal role in treating hazardous waste. The treated water and salt, which are the by-products of the treatment process, are subsequently supplied to member units for reuse. To address environmental concerns and prevent river and groundwater pollution, the TNPCB has mandated the Zero Liquid Discharge (ZLD) system for high-pollution industries. The ZLD system aims to recover water and salt from effluent, thereby minimizing pollution.
Key Considerations
1. Classification as Sale of Goods: The Applicant’s intent is to buy effluent water, treat it, and then sell the resultant products at market rates. To ascertain whether this qualifies as the sale of goods, it’s essential to consider legal precedents. One crucial reference is the Supreme Court’s decision in the case of State Of Madras vs Gannon Dunkerley & Co. According to this, a sale requires an agreement, money consideration, and the transfer of property in goods. If the Applicant’s actions align with these stipulations, they can classify their activity as the sale of goods.
2. Water Classification under GST: The classification of water, especially post-treatment, has long been a point of contention. Some advance rulings have deemed de-mineralized water from effluent treatment to be classifiable under Heading No. 2201, taxable at 18% GST. However, as per the Customs Tariff Act, de-mineralized water falls under heading 28.53. This is crucial because the effluent-treated water isn’t subjected to a de-mineralization process, which means it doesn’t fit the de-mineralized water category.
Conclusion: The issue at hand isn’t just about the classification but also the broader implications on the environment and industry. While the classification of output as the sale of goods depends on following procedures in the Sale of Goods Act, the classification of effluent treated water is more nuanced. As per recent rulings and clarifications, effluent-treated water can potentially attract a Nil rate of tax, given its specific characteristics and uses.






