The civic body is now planning to restructure its water supply system to ensure equitable supply to all areas in the city.
The BMC has now decided that each person in the city should get at least 135 litres of water per day. It had in 2009 set 90 litres per capita per day (LPCD) as the norm, citing scarcity.
People living in new constructions will benefit from this move. Post 2009, the BMC had slashed the water supply norm to these buildings, from the existing 90 LPCD to 45 LPCD. Also, suburbs might get more water than the island city because of the BMC's move, as they are more densely populated.
The BMC plans to make adjustments to valves at points along the supply line, to make sure all areas get the same amount of water. Areas near the supply source usually get more water, at greater pressure, while areas far from the source get less, at lower pressure.
It might be difficult for the civic body to implement this, said Dhaval Desai, a research fellow, at Observer Research Foundation, a think-tank.
"It is true that the distribution supply is flawed. It will be nothing short of magic if the BMC is able to make this equitable. However, when it doesn't even have a way to measure the amount of water it supplies, how is it going to determine who gets how much water?"
The BMC said that it plans to get feedback from citizens for this. "We will identify areas with such disparities then. We will also ask citizens who have been getting very little water to write to us so that we can act on their complaints," said another civic official, refusing to be named.
However, the move might mean bad news for those who get more water than the norm.
A senior civic official, not wishing to be named as the decision is yet to be announced, said, "This redistribution will mean that those areas which are currently getting around 250-300 LPCD of water will then start receiving less water, once we make the system completely equitable."