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About FAQ Water
Water supplied for industrial purpose is drawn from the fag end of the downstream, which otherwise enters the sea and hence does not affect water for agriculture, domestic or drinking purpose. However, Sterlite Copper meets 60% of the water requirement through desalinated facility.
Water conservation is a key priority for Sterlite Copper and various initiatives like rainwater harvesting and Reverse Osmosis plant are on site for efficient treatment and utilization. Post opening of the plant, the total raw water requirement will be met through desalinated water only.
Sterlite Copper has been a Zero Liquid Discharge plant since the inception of the plant in 1995. All wastewater is treated in Effluent Treatment Plant followed by Reverse Osmosis Plant. The entire treated water is then recycled back into operations, and there is no discharge of any water to the sea. This Zero Discharge nature of our operations has been endorsed by the NEERI Committee in 2011.
The committee, along with the petitioners – Mr. Vaiko (along with Nityanand Jayaraman), CPI, and National Trust for Clean Environment visited the plant to confirm the Zero Liquid Discharge nature of our operations.
Sterlite Copper is zero liquid discharge plant from the date of inception. The solid wastes from effluent treatment plants are treated and disposed in a Secured Land Fill designed and operated as per CPCB guidelines. Other solid wastes, such as copper slag and gypsum which are high volume and low effect wastes, are being utilized for sustainable applications such as cement, road building and shot blasting applications. The slag is particularly tested for its non-leachable, non-toxic characteristics from reputed Government institutes of the country and accordingly put to use for sustainable applications such as landfilling, road construction, use in the cement industry and sand-blasting.
The water samples from the piezometric bore-wells / dug wells surrounding the solid waste storage sites and from the upstream and downstream villages are being analysed by Tamilnadu Pollution Control Board since inception of the plant, on monthly basis.
There is no presence of marker pollutants in the ground water samples analysed by the TNPCB during the plant operations. It can thus be concluded that Sterlite’s operation is not polluting the groundwater.