How much. And from where

• Yamuna (mainstream): 37.50 per cent (546 million litre per day (MLD) treated at Wazirabad; 409.50 MLD at Chandrawal)

• Western Yamuna Canal: 33.36 per cent (910 MLD, treated at Haiderpur)

• Ranney wells (huge wells on the riverbank) and tubewells: 10.81 per cent (295 MLD)

• Ganga: 18.33 per cent (500 MLD, treated at Shahadara)