Assessment of water quality & potential in relationship to the local geology around Thika green limited estate in Kiambu county, Kenya

Abstract

The study assesses the influence of geology and geological structures such as faults, joints and fractures on the water quality of thika green area and the environs. The area is within larger Kiambu County. The study would like to connect the relationship of the geology and what its impact has been on the water quality. Some of the rock chemistry that influences the quality and amount of groundwater potential in the area. The geographical co-ordinates 37° 00' -37° 06' E, 05° 06' - 1° 06' S. The local geology lies in the larger Aberdean watershed the catchment area being fed by rivers from the Aberdare ranges. It’s characterized by the following rocks: Recent to Quaternary ; Alluvium and soils, and tuffs, Tertiary: Likipian Trachytes and Simbara Series Basalts and Kapiti phonolites, the basement system takes the bottomless layers. The short study has shown that the geology of the area has contributed to good quality water mainly because of the basaltic origin that is free from fumaroles and hydrothermal active fluids.