Abstract
This study examined the effects of land-use on the quality of Imabolo stream in Ankpa urban area of Kogi State, Nigeria. The objective is to examine how the diverse land-use types along the stream environment affect pollutant load of the stream which is used extensively for domestic purposes by the residents. To achieve the aim of the study, water samples were collected from seven locations along the stream reach corresponding to the identified land-uses in the study area in March and June, 2014. Eighteen physico-chemicals and two microbiological parameters were analyzed using standard procedures. Descriptive statistics were used to analyze the data obtained. The results were also compared with WHO and NSDWQ standard for drinking water quality for characterization. The analysis revealed six water samples had elevated values of parameters above the recommended limits for human consumption. Descriptive statistics revealed consistent variations in the concentrations of parameters in water samples among land-use zones, while student t-test showed significant difference (p
Highlights
Land-use type refers to the specific use to which a given piece of land is used for, and the relationship between land use type and environmental pollution is frequently discussed in literature (Dylan et al, 2005)
The results of the contributions of land-uses types in the study area to the quality of the stream water are summarized in Table 3, and discussed briefly below
Level of stream water pollution was interpreted by examining the total number of the mean values of the tested water quality indicators that exceeded the 2011 WHO and 2007 Nigerian Standard for Drinking Water Quality (NSDWQ) at each land-use type
Summary
Land-use type refers to the specific use to which a given piece of land is used for, and the relationship between land use type and environmental pollution is frequently discussed in literature (Dylan et al, 2005). Pollution from urban land-use activities affect surface water quality by adding sediment, nutrients, toxics, organic materials, and pathogens to surface and ground waters (Marquita et al, 2007). Water quality is a major determinant of the integrity of water resources and its decline post great risk to users and place pressure on peoples’ water needs globally (Raji and Ibrahim, 2011). Water is polluted through direct or indirect introduction of chemicals and other substances to water sources, and this renders it unfit for its intended purpose (Hussain et al, 2008). Water-related diseases such as cholera, diarrhoea, bilharzias and so on affect the poor local people who lack potable water and as such resorted to using contaminated stream and underground water for drinking and domestic purposes (Galadima et al, 2011)
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