The special train transporting water from Vellore to Chennai was flagged off on Friday morning from Jolarpet station.
All necessary pipeline arrangements to shift the water from the wagons to Kilpauk Water Works are ready, a senior Metro water official said. On Wednesday, workers worked for connecting the 400 mm pipeline laid between the tracks to other pipelines.
It has been laid for a distance of nearly 700 metres to match the length of the train.
Water will reach the Kilpauk water works located 3km away and then get distributed to various parts of the city.
Two trains with 50 wagons each have been commissioned for the purpose. While one will be stationed near Jolarpet, another will be housed at the Avadi railway yard, according to sources.