This dissertation work examines the groundwater regulation in relation to regulated practice in United Kingdom and unregulated practice in Nigeria. The work looked at various regulations available for groundwater management, the institution that is responsible for its management, the land use practice, and its effect in order to find out   whether the practice is been controlled in any of the countries. The work recommended what Nigeria government can adopt from United Kingdom regulated practice and the lesson United Kingdom can learn from unregulated practice in Nigeria. It was observed that there are regulations in both countries that govern the management of groundwater extraction; while the regulations are being implemented and adhered to in United Kingdom, the regulations are not implemented and adhered to in Nigeria. There is cause relation between land management practice and groundwater quality in both countries but  the United Kingdom management practice is controlled by Nitrate vulnerable directive while it is absent in Nigeria. From the data gather from both countries, it was observed that almost 300 boreholes were extracted in Uyo, Nigeria between 1994 and 2004 while in Hull, United Kingdom, only 5 boreholes were extracted and licensed between 1965 and 2008. Moreover, the daily quantity and annual quantity of five boreholes in Hull were capped to specific quantity in m3, while in Nigeria; there is no regulated or capped quantity: the data was only based on the storage capacity of the tanks used by the borehole owners for water storage. This implies that there is no capped standard for daily abstraction and annual abstraction which, gives room for wastage, over exploitation of groundwater and aquifer’s deterioration. Therefore unregulated groundwater extraction in Nigeria poses serious effect on land, aquifer, and sustainable usage of water resources, while the regulated practice in United Kingdom is an indication of sustainable practice of groundwater extraction which guarantees both present and future utilization.