Delhi Metro has set up Effluent Treatment Plants and Sewage Treatment Plants at its five depots to reuse waste water for cleaning train coaches and related purposes thus saving about 143 kilolitres of water per day.
Similar plants have also come up at Delhi Metro Rail Corporation's residential colonies at Shastri Park, Sarita Vihar and Yamuna Bank where about 260 kilolitres of water is being reused, primarily in watering gardens and toilets.
The five depots where the facilities have been installed are - Sarita Vihar, Shastri Park, Yamuna Bank, Sultanpur and Khyber Pass.
The plants at Najafgarh and Dwarka are under renovation.
Officials said plans are afoot to have similar facilities in the depots which are going to come up as part Phase-III of expansion and "feasibility studies" are being conducted to explore the possibility of installing similar plants at other locations.
As part of its water conservation efforts, DMRC also has 470 rain water harvesting pits at 99 locations with a total capacity of 7,844 cubic metres, a statement said.
It is also developing an "Environmental Management System" to promote awareness on the need to conserve water among employees and stakeholders.
