Iranimuttom reservoir to be connected to main supply pipeline for Attukal

As part of its efforts to shore up the supply of piped drinking water to the Attukal Pongala festival zone, the Kerala Water Authority (KWA) will, on Wednesday, connect the reservoir at Iranimuttom to the main pipeline supplying water to the Attukal area.

Though the reservoir built as part of the Japan International Cooperation Agency (JICA)-funded scheme is ready for use, its distribution pipelines are yet to be commissioned. So what the KWA engineers will do is connect the ‘scour line' (secondary outlet) of this reservoir to the Attukal distribution main. This is expected to boost the availability of water in homes in and around the Attukal temple. This reservoir has already been ‘loaded' with sufficient quantity of water.

As has been done for so many years, the KWA will also take steps to increase the water level in the low-level zone reservoir at Vellayambalam. The water level in this tank needs to stand four metres above the outlet valve for sufficient quantity of water to reach the Attukal area. Already, the daily level here had touched the three-metre mark, V. Chandran, executive engineer of the KWA PH division here, told The Hindu.

“Some time ago when we stopped supplying water to the Thiruvallam reservoir from the low-level reservoir, we saved about three million litres a day. This is why the water level in the low-level reservoir is already around the three-meter mark now. By March 3 or so, we will take steps to take this up to the four-meter mark,” he said.

An intricate exercise

For this, the KWA will regulate the inflow of water to the reservoirs at Peroorkada and at the Observatory Hill. To begin with, the back-pumping of water from the low-level reservoir to the Observatory Hill tank will be stopped. This will reduce the quantity of water in the tank which services large parts of the city.

To try and compensate for this, the valve located near the Thankamma stadium near Peroorkada will be partially closed. This will drastically reduce the quantity of water that gets ‘tapped' to the Peroorkada reservoir from the line that feeds the Observatory Hill tank. All these operations will be timed so that the water level at the low-level reservoir touches the four-meter mark on the night of March 5.

On March 6, the KWA will also activate 750-odd taps specially installed in 73 locations in the festival zone. KWA tankers would also supply water to designated tanks, Mr. Chandran added.