Primary sources that Coimbatore city draws its drinking water. It receives its drinking water mainly from reservoirs in the Western Ghats mountains in the west of the city - Siruvani dam and Pillur reservoir. The 3rd source Aliyar reservoir, in the south of Coimbatore, from the Bhavani river. The 4th source is the Kavundampalayam-Vadavalli scheme which also draws from the Bhavani river. The Tamil Nadu Water Supply and Drainage (TWAD) is responsible for water supply and sewage.
101.40 million litres
Water drawn each day from the Siruvani dam located in Palakkad, Kerala, around 36 km upstream from the city. Drawn via the Siruvani scheme the water is source of drinking water to around 36 wards in the city and several villages outside Coimbatore. With Kerala deciding to lower the maximum level in the reservoir in late 2019, Tamil Nadu Water Supply and Drainage (TWAD) has now been drawing 90 MLD, of which about 83 MLD is supplied to the corporation limit. The rest is being supplied to the villages in the outskirts of the city. (MLD = million litres a day).
145 million litres
Water drawn each day from the Pillur reservoir is located in the Bhavani basin around 95 km north of the city and drawn into the city via the Pillur-1 and Pillur-2 schemes.
30 million litres
Additionally drawn each day from the Aliyar reservoir in the south of Coimbatore and from the Bhavani river together. Schemes include Aliyar scheme and Kavundampalayam-Vadavalli scheme.
275 million litres
Combined water drawn each day from the 3 sources. The capacity of the reservoirs depends directly on the rainfall, which is divided unevenly over the year due to the monsoon climate. Also the yearly rainfall is varying strongly, which can lead to water supply shortages, as experienced in 2017. In this case, large trucks called water tankers supply the inhabitants temporarily with drinking water.
216 million litres
Daily water needs based on a population of 1.6 million and Indian norm of 135 litres per person per day.
116 million litres
Water actually supplied to residents in the city - a deficit of nearly 100 million litres even though 245 million litres could be potentially drawn from sources each day. The reasons for the deficit include: limited storage capacity, massive leakages and illegal connections.
Coimbatore City Municipal Corporation has chosen SUEZ to manage and operate the water distribution system within the entire city (60 wards) to ensure continuous drinking water access to its 1.6 million inhabitants. The 26-year project (1 study period, 4 years of implementation period and 21 years of maintenance), worth near €400 million, includes the optimisation, rehabilitation and operation of the entire water distribution system (reservoirs, water network, house connections, water meters, valves, etc.) which will cover an area of over 100 km2 with 150,000 connections and a distribution network of 1,200 km. The contract also aims to improve customer services with a state-of-the-art customer call centre and customer agencies to ensure a personalised service and faster complaints resolution.
Levy per 1,000 litres of water charged by the Coimbatore City Municipal Corporation (CCMC) to consumers in the city. The CCMC though pays Rs 9.75 for 1,000 litres to the TWAD.