Govt. agency needed for deep borewell and waste land development in Tiruvallur, Tamilnadu

My native place is in Tiruvallur Dt, Tamilnadu. We have 3 acres of fertile land and grow paddy whenever water is available in lake. Adjoining lands, about 50 acres is cultivated with a distant water source and nearly Rs.5000 per acre is spent for water as no deep borewells are available in nearby fields. Poor people are not afford to spend this much as the income from land is not lucrative.
Kindly inform me of any Government agency who can sink deep borewell with proper survey, prospecting and power supply provided.
Can the cost be treated as a loan under waste land development?
Is there any subsidy for such projects?