I would like to inform you that I too have received a similar erroneous water bill. This bill refers to the billing period from 21/2/2015 to 22/4/2015 and the due date is 6 June 2015. My ward too in under PWD works Div IX/sub Div. IV Curtorim 6. The water bill calculations are not as per the water tariff printed on the back of the bill. The consumer should have got a much less bill if the calculations are made as per the water tariff printed on the back of the bill. The units billed are shown as water charges. The water charges are shown as meter rent. Finally the meter rent is shown as sewerage charges. However the total charges are perfectly placed.
The bill (shown in the photo) can be clearly seen with the mistakes.

