The capital's most parched areas received the first lot of water on Tuesday from the ambitious Sonia Vihar water treatment plant.
"The plant is functioning as per expectations and we would be releasing the water in a phased manner for the first few days," Delhi Jal Board CEO Arun Mathur said.
The areas, which received water from the new plant, are South Delhi, South West Delhi, East Delhi and parts of North East Delhi.
"Certain areas like South Delhi's Sarita Vihar have never received piped water supply though the infrastructure had been there. Today with water being received from the Sonia Vihar plant for the first time, the area received so much water that the supply had to be switched off and the water was diverted to other areas," he said.
Mathur said in areas like Vasant Kunj where there was no noticeable augmentation in supply, the water supply would increase perceptibly over the next few days.
"Bhagirathi plant had been shut down for 10 hours on Monday for some routine work. Thus in certain areas there was no major difference. But these areas would start getting an increased supply within one or two days," he said.
These areas will also get the augmented water supply after the Geetanjali boosting station becomes operational from August 15, he said.
"For the first few minutes the supply might have been turbid because the pipes were lying unused for a long time. But we had cautioned people that they should throw away some water initially so there was no problem," he added.