100 train coaches to get bio-vacuum toilets to reduce odour
To make trains odour-free and cut down water usage, the Indian Railways will roll out 100 coaches with bio-vacuum toilets in January 2018, reports said. While a conventional toilet uses 10-15 litres of water per flush, the vacuum toilet reportedly consumes around 500 ml of water for flushing. Notably, bio-vacuum toilets cost almost â¹1 lakh more than conventional toilets.