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ABSTRACT
The drinking water quality assessment in Mogadishu, the capital and most populous city of Somalia was evaluated in this study. The data were obtained in
the year 2019 and subjected to laboratory tests in the Mumtaz Engineering service. Hydro chemical analyses were conducted on twelve samples from six
different regions located in Mogadishu with graphical representation of the minimum, maximum and average values of all parameters measured. Coupled
with this is the calculation of the Water Quality Index (WQI) for the six regions. One of the main findings of the study revealed that the groundwater
from all the regions except for region one is not fit to drink. When a comparison was made across all regions, four regions had a very high TDS above the
WHO limit, while two regions had a high EC above the WHO limit. This study recommended that there is a need for proper handling and management of
groundwater in the regions with a high concentration of evaluated parameters to avoid bioaccumulation in human tissues through in-take of polluted waters.

ABSTRACT
Groundwater is a major drinking water resource in arid coastal regions.
The groundwater quality of Bosaso city experienced degradation due to
rapid urbanization and industrialization. This study was carried out to
delineate the spatial distribution of groundwater quality parameters and
evaluate groundwater suitability for drinking and irrigation uses. The
groundwater samples were collected from Bosaso Plain to determine the
pH, electrical conductivity (EC), total dissolved solids (TDS), and
sodium and chloride concentrations. To categorize water quality for
irrigation purposes, sodium adsorption ratio (SAR) was calculated.
Ordinary kriging procedure was performed in order to map the spatial
distribution of groundwater quality parameters. The interpretation of
laboratory analysis results revealed that the most of groundwater wells
in the study area is unsafe for drinking purposes due to high salinity,
except for the central area (Biyo Kulule). In terms of irrigation uses, the
minor area may be under the risk of alkalinity or sodium hazard.
However, all groundwater supply points are not suitable for irrigation
due to the salinization risk and can be only used to irrigate high salt
tolerant crops. The final maps show that the groundwater quality
decreases from southeast to the north of the plain. This indicates that the
groundwater is probably subjected to the seawater intrusion. In this
regard, the implementation of a groundwater monitoring program is
necessary to achieve concrete results. Nevertheless, the most suitable
groundwater quality is found to be at the central part of the Bosaso
plain