Assessment of groundwater quality in Yaoundé area, Cameroon, using geostatistical and statistical approaches

Teikeu, William Assatse; Meli’i, Jorelle Larissa; Nouck, Philippe Njandjock; Tabod, Tabod Charles; Nyam, Françoise Enyegue A.; Arétouyap, Zakari

doi:10.1007/s12665-015-4779-7

Cited by 12 publications

(4 citation statements)

References 17 publications

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“…us, only HCO − 3 was responsible for alkalinity in the studied springs. Its concentration ranged between 10.42 and 45.52 mg/L without any significant difference between the two sampling seasons (p > 0.05) and was very low compared to the WHO guideline value of 1000 mg/ L. HCO − 3 is necessary as it constitutes an important buffer system which helps in lowering the acidity of water [25]. Its presence in the studied water sources could be as the result of weathering of carbonate minerals in rocks and soil of the study area.…”

Section: Chemical Propertiesmentioning

confidence: 88%

“…Knowing that the maximum permissible limits for calcium and magnesium ion concentration set by the WHO for drinking water are 75 mg/L and 30 mg/L, respectively, all the water sources were suitable for drinking and classified as soft water as their concentrations were below 60 mg/L [10]. ese results were in disagreement with those of Mofor et al [7] and Tiekeu et al [25] as they reported very low levels of calcium and magnesium in ground water in Awing community and Yaoundé area, respectively. High level of calcium and magnesium in these sources could be due to their high occurrence in the soils suggesting the presence of limestone and chalk sediments in the study area [10].…”

Section: Chemical Propertiesmentioning

confidence: 99%

“…Many studies carried out around Cameroon, namely, those of Temgoua [30], Wirmvem et al [12], Nanfack et al [11,Tamungang et al. [25], and Mofor et al [7], also revealed high colonies of pathogenic bacteria in ground water. According to Nanfack et al [17], the presence of pathogenic bacteria in these water sources was surely due to poor hygiene and sanitation.…”

Section: Bacteriological Qualitymentioning

confidence: 99%

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Hydrogeochemistry of Surface and Ground Water in Alatening Village, Northwest Region, Cameroon

Njoyim

Kengni

Tita

et al. 2020

Applied and Environmental Soil Science

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The purpose of this study was to evaluate petrography and the quality of water for drinking purposes in Alatening, Northwest Cameroon, with respect to the World Health Organization (WHO) standards. The indigenes of the study area, as well as other dwellers in rural areas, consume water from these sources whose quality is unknown; thus, it can lead to contamination and waterborne diseases. Three springs and two streams of Alatening village were investigated in early December 2017 and late July 2018 for organoleptic, physicochemical, and bacteriological parameters using standard methods. The petrographic studies revealed trachyte and benmoreite, and weathering of minerals from these rocks into the soil leads to the water-rock interaction, thus water hydrogeochemistry. All the water samples were clean except that of Alabong which had slight odour due to leaf fall. pH showed acidic water with the springs of Ngog and Alabong falling below the WHO limit in the dry season. Electrical conductivity and total dissolved solids (TDS) were low implying low mineralised water which can also lead to shortage of important minerals in humans. All the essential ions were found within the WHO guideline values without any significant change in concentrations between seasons ( p > 0.05 ). The water facies were such as Mg-Ca, Cl-Ca, and HCO3-CO3, suggesting an influence of rock silicate weathering and anthropogenic influence. Aluminium and iron contents were above the WHO limit in both seasons due to their abundance in the soils which could be a risk factor for the local population. Faecal coliforms as well as specific bacteria such as Enterobacter, Escherichia coli, Streptococcus, Salmonella, and Shigella were found in all the water samples, attributable to poor hygiene. Health data in the locality indicated the prevalence of typhoid, dysentery, and amoebiasis with a total of 2702 cases recorded between 2016 and 2017, therefore requiring treatment before consumption.

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Section: Chemical Propertiesmentioning

confidence: 88%

Section: Chemical Propertiesmentioning

confidence: 99%

Section: Bacteriological Qualitymentioning

confidence: 99%

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Hydrogeochemistry of Surface and Ground Water in Alatening Village, Northwest Region, Cameroon

Njoyim

Kengni

Tita

et al. 2020

Applied and Environmental Soil Science

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“…Groundwater constitutes 21.5% (about 57 billion m 3 ) of the country's water source [10] and is an important source of drinking water for most Cameroonians [11]. Unfortunately, this resource which was once of excellent quality is now pruned to diverse sources of contamination.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Physicochemical and Heavy Metal Properties of Groundwater in Edéa (Cameroon)

Beatrice¹,

Brell²,

Aboubakar³

et al. 2019

AJWR

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In order to assess the physicochemical and heavy metal properties of groundwater consumed in Edéa (Cameroon), 8 boreholes were randomly chosen from 8 sites and their suitability was evaluated using three norms viz Cameroonian Norm (NC207:2003-02) and International standards including (CODEX: 108-1981 and European Union, EU:1998). Water samples were collected in triplicates bimonthly and analyzed using standard methods. Physicochemical analysis showed high temperatures with a mean value of (30.26 ±2.4) °C, acidic pH 5.94±0.34 and very weak mineralization leading to an electrical conductivity value of (134, 96 ± 49.59) µS/cm. The relative abundance of major ions was Ca 2+ >Mg 2+ >Na + > NH 4 + >K + for cations and NO -3 > HCO -3 -> PO 4 3-> SO 4 2->Clfor anions. All these ions fell within acceptable limits recommended by NC207:2003-0 boreholes 2, CODEX: 108-1981 and EU: 1998 with an exception for nitrates, ammonium and phosphate contents which were above acceptable limits. Among heavy metals analyzed, results showed that only lead and manganese values were above the standards'; all boreholes were contaminated by Lead while only 32.5% was contaminated by Manganese. The main water types were Mg-Ca-SO 4 3--Cland Mg-Ca-HCO 3 can't result to an alteration of the aquifer matrix (dissolution of Gypsum chloride) and influence of anthropogenic activities through infiltration of agricultural, industrial and domestic waste water. These results showed that water of Edéa is not suitable for human consumption and must be appropriately treated before any usage.

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Natural and anthropogenic factors affecting the shallow groundwater quality in a typical irrigation area with reclaimed water, North China Plain

Xiao

Yin

et al. 2017

Environ Monit Assess

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In this study, the hydrochemical characteristics of shallow groundwater were analyzed to get insight into the factors affecting groundwater quality in a typical agricultural dominated area of the North China Plain. Forty-four shallow groundwater samples were collected for chemical analysis. The water type changes from Ca·Na-HCO type in grass land to Ca·Na-Cl (+NO) type and Na (Ca)-Cl (+NO+SO) type in construction and facility agricultural land, indicating the influence of human activities. The factor analysis and geostatistical analysis revealed that the two major factors contributing to the groundwater hydrochemical compositions were the water-rock interaction and contamination from sewage discharge and agricultural fertilizers. The major ions (F, HCO) and trace element (As) in the shallow groundwater represented the natural origin, while the nitrate and sulfate concentrations were related to the application of fertilizer and sewage discharge in the facility agricultural area, which was mainly affected by the human activities. The values of pH, total dissolved solids, electric conductivity, and conventional component (K, Ca, Na, Mg, Cl) in shallow groundwater increased from grass land and cultivated land, to construction land and to facility agriculture which were originated from the combination sources of natural processes (e.g., water-rock interaction) and human activities (e.g., domestic effluents). The study indicated that both natural processes and human activities had influences on the groundwater hydrochemical compositions in shallow groundwater, while anthropogenic processes had more contribution, especially in the reclaimed water irrigation area.

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Assessment of groundwater quality in Yaoundé area, Cameroon, using geostatistical and statistical approaches

Cited by 12 publications

References 17 publications

Hydrogeochemistry of Surface and Ground Water in Alatening Village, Northwest Region, Cameroon

Hydrogeochemistry of Surface and Ground Water in Alatening Village, Northwest Region, Cameroon

Assessment of Physicochemical and Heavy Metal Properties of Groundwater in Edéa (Cameroon)

Natural and anthropogenic factors affecting the shallow groundwater quality in a typical irrigation area with reclaimed water, North China Plain

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