Mombasa County the county is divided into seven divisions, eighteen locations and thirty sub-locations. Kenya was divided into eight provinces prior to 2013, which were subdivided into 47 counties. In the former Coast Province there are six counties, Mombasa being one of them. It is situated in the southeast of Coast Province. It is the smallest in size, covering an area of 212.5 km². The county lies between latitudes 3°56’ and 4°10’ south of the equator and longitudes 39°34’ and 39°46’ east. The county and the city are divided into four divisions: Mombasa is an urban city county and for this reason
Mombasa Mainland Desalination Plant 2018, the daily freshwater needed was , but prevailing sources could only supply . The MMDP is one of four desalination plants planned for construction in Mombasa County, to address the freshwater shortage. MMDP is being developed by "Almar Water Solutions", a Spanish company that specializes in the provision solutions to water-related issues, including infrastructure development, design, financing and operation. MMDP is the first to be developed, with construction planned to start in June 2019 and completion by January 2021. Other desalination plants in the pipeline include "Mombasa West Desalination Plant", located on the western side of Mombasa mainland, with