Geo tech ET is a user-friendly underground water monitor that can be used to measure the depth of water from the surface. This is an important initiative because with rapid urbanization the level of underground water is fluctuating. The period of monitoring and mitigation of the causes of the water level fluctuation is significant in those areas where people depend on underground water for domestic and agricultural uses. Monitoring of underground water level helps to make water user aware of possible consequences due to the drying of underground water, action to be taken to maintain the reservoir and formulate the policies to regarding wise use of this resource.