ABSTRACT
Groundwater being hidden is more vulnerable to hidden threats of contamination and depletion.

Urban growth and rapid increase in population have induced tremendous pressure on natural resources. A common factor to most urbanisation is that it results in impermeabilisation of a significant proportion of land surface, and contamination of Groundwater. Urbanisation causes major changes in the frequency, volume and quality of recharge, although these changes cannot be measured directly and are thus difficult to quantify. Uncontrolled groundwater abstraction may lead to an imbalance in Ecosystem by not only decline in aquifer water levels, but also reversal of groundwater flow directions, land subsidence, saline water intrusion in fresh resources and induced pollution. Increase in nitrate contents in urban areas as a result of lack of adequate sewage disposal system is seemingly a burning issue. The increase in nitrate consumption leads to ‘blue baby syndrome’ in babies that may result in their death