Delhi Jal Board — impurity in drinking water supply

Address:

New Delhi, Delhi, 110059

Dear sir
I am resident of south extn part-2, gali no-5, uttam nagar, new delhi-110059.
Sir from last 15 days the water which is provided by delhi jal board is very impure and smell like drainage water. No one can use that water even for other purposes like washing, cooking etc.
This problem is faced by lots of houses in our locality. We already filed many complaints about this issue but no remedy is provided by delhi jal board.
Its my humble request with you to provide us immediate resolution of this problem, because with proper water our life become hell.