Evaluation of Surface Water Contamination Using Heavy Metal Pollution Indices in the Mgoua Watershed, Southwestern Cameroon

Details

Serval ID
serval:BIB_E2E3577D2E23
Type
Article: article from journal or magazin.
Collection
Publications
Title
Evaluation of Surface Water Contamination Using Heavy Metal Pollution Indices in the Mgoua Watershed, Southwestern Cameroon
Journal
Annual Research & Review in Biology
Author(s)
Ekoa Bessa Armel Zacharie
Publication state
Published
Issued date
22/12/2021
Language
english
Abstract
Groundwater samples were collected during April and August 2016 from five hand-dug wells in Soa
subdivision, Cameroon, Africa, with the aim to assess the microbiological quality of them and the
health risk they (it) posed to the population in the study area. The low piezometric levels (9 – 20 m)
and the little variation in curb-stone heights (0.58 – 1.05 m) suggest that the wells are vulnerable to pollution. The physicochemical parameters show that the groundwater of Soa is acidic and poorly
mineralized. The residents (population that is) dominated by students are not connected to the
supply of water, making them to take recourse to groundwater for potable and general domestic
use. Bacteriological analysis of the water samples focused on the search and listing of
heterotrophic mesophilic aerobic bacteria (HAMB). Also, bacteria of the Enterobacteriaceae family
were isolated, identified and listed (Escherichia, Klebsiella, Shigella, Citrobacter, Providencia). The
analyses were carried out through standard, selective and conventional gallery culture media, using
surface spreading, streaking and sub-culturing techniques. Different ions were also measured for
the physicochemical component according to the usual analytical techniques. The low values of
oxidability recorded clearly indicated the organic pollution of the study area. The organic matter
was found largely influencing the increase in bacterial load (which is high and varied). The
presence of these germs degrades the quality of the water, which varies from one site to the other,
with the important factors being the proximity of the sources of pollution to the well and its poor
maintenance. As local populations are using these ground waters without any prior treatment, they
are prone to health risks over the period time.
Create date
25/11/2022 16:44
Last modification date
18/07/2023 17:24
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