Borewell Contractors in Sembiam will provide you a best service. Digging borewells in areas above 150 metres was pointless as there was little chance of water availability in the area, the official said. To maintain water level, water should be allowed to seep in nearby wells and ponds.Cardamom and tea plantations sink borewells, mainly for irrigation during summer. Though permission from the Department of Groundwater is mandatory for digging borewells, it is seldom taken.Therefore, the department was not sure of the exact number of borewells in the two blocks, said the official. Estate managements dig borewells inside the plantations and hide them from public.The official said there was no ban on sinking borewells for household needs. However, rules are not adhered to and borewells are sunk by unauthorised firms. Borewell units tell people that water will be found if the wells are dug deeper.