A board meeting of DJB, chaired by Chief Minister Sheila Dikshit, approved the projects which include laying of new water distribution lines, construction of under ground water reservoirs and replacement of old pipelines.
The projects are being taken up to ensure equitable distribution of water and improve operational efficiency of the DJB, officials said.
The board meeting approved several projects for laying sewer network in 60 unauthorised colonies.
"The Board also accorded approval for spending Rs 450 crore for laying sewer network in unauthorised colonies in Rithala Keshopur Dwarka and Okhla," they said.
It also gave a green signal to construct a 12.04 million litre capacity under ground reservoir at Mayapuri along laying of pipelines at an approximate cost of Rs 32.46 crore.
Both the projects are likely to be completed within a period of 24 months.
The board also approved a project to improve water distribution network at Shastri Nagar and Patel Nagar at a total cost of Rs 16.56 crore.
