Environmental hazards from the materials used to make and colour the sculptures pollute local water sources, as the sculptures are brought directly into the river at the end of festivities. Efforts are underway to introduce ecofriendly materials to the artisans who make the sculptures. West Bengal has been credited by its own environmental agency as being possibly the first Indian State to successfully curb the use of hazardous paints. However, by their own account, only twothirds of the sculptures made are currently coloured with ecofriendly paints.Commercialization of Hindu festivals like Durga Puja in the last quarter of 20th century have become a major environmental concern as devout Hindus want bigger and brighter sculptures. Environmentalists say the sculptures are often made from hazardous materials like cement, plastic, plaster of Paris, and toxic paints.