Per capita water supply is 135 LPCD. Based on the Population of Thanjavur, The demand of water supply is 30.05 MLD. Major sources of Water Supply is Colleron River Source. 20.00 MLD and 137 Borewells and Power pump borewells water is being pumped from this source and 7.50 MLD has been drawn from local borewell sources. So daily water supply is 123.00 LPCD. The average Distribution supply is 2 hours per day. There are 19 Nos of OHTs with 114.75 Lakh Liters Capacity, 142 Nos of Power Pumps and 219 Nos of Mini Power Pumps in Thanjavur Corporation Water Supply System. Thirumanur to Vennar Pumping Station Main Line Length is 19.00 Km. The total Distribution Line of this town is 334.70 Km. The number of House Service Connection 29200. Monthly tariff for water supply connection is Rs.75 and Rs.150 for domestic and commercial respectively. So far Annual demand generated is Rs.262.52 lakhs.