The study assesses the quality of hand dug wells in relation to distance from soakaway septic tanks in three selected peri-urban communities in the Ga West Municipality near Accra, Ghana. Water quality analyses of bio...The study assesses the quality of hand dug wells in relation to distance from soakaway septic tanks in three selected peri-urban communities in the Ga West Municipality near Accra, Ghana. Water quality analyses of bio-physico-chemical variables (pH, Temperature, EC, turbidity, DO, BOD, TSS, TDS, sodium, potassium, nitrate, nitrite, ammonia, sulphate, chloride, salinity, total alkalinity, total coliform, fecal coliforms and isolation of <i>E. coli</i>) were determined. Concentrations of the major nutrient anion sulphate, nitrate, phosphate, and chlorides in water samples at distances between 0</span><span style="font-family:""> </span><span style="font-family:"">-</span><span style="font-family:""> </span><span style="font-family:"">30 m radial distances from the septic tank were above the WHO permissible limit of drinking water compared to the control. All the water samples had high fecal and total coliform counts that exceeded the international standard of 0 per 100 mL of potable water with counts ranging from 0</span><span style="font-family:""> - </span><span style="font-family:"">143</span><span style="font-family:""> </span><span style="font-family:"">cfu/100</span><span style="font-family:""> </span><span style="font-family:"">ml and 53</span><span style="font-family:""> </span><span style="font-family:"">-</span><span style="font-family:""> </span><span style="font-family:"">463/100</span><span style="font-family:""> </span><span style="font-family:"">ml for FC and TC respectively. High fecal coliform and detection of <i>E. coli</i> in most samples is an indication of fecal pollution possibly from their close proximity to soak away septic sewage. The high nutrient levels detected in samples at distances between 0</span><span style="font-family:""> </span><span style="font-family:"">-</span><span style="font-family:""> </span><span style="font-family:"">30</span><span style="font-family:""> </span><span style="font-family:"">m as compared to the controls may also be attributed to its close proximity to septic tanks. This study, therefore, accentuates the need for the owners of the water points to site their water source at least 30m away </span><span style="font-family:"">from </span><span style="font-family:"">localized sources of pollution as well as treatment of groundwater before use.展开更多
文摘The study assesses the quality of hand dug wells in relation to distance from soakaway septic tanks in three selected peri-urban communities in the Ga West Municipality near Accra, Ghana. Water quality analyses of bio-physico-chemical variables (pH, Temperature, EC, turbidity, DO, BOD, TSS, TDS, sodium, potassium, nitrate, nitrite, ammonia, sulphate, chloride, salinity, total alkalinity, total coliform, fecal coliforms and isolation of <i>E. coli</i>) were determined. Concentrations of the major nutrient anion sulphate, nitrate, phosphate, and chlorides in water samples at distances between 0</span><span style="font-family:""> </span><span style="font-family:"">-</span><span style="font-family:""> </span><span style="font-family:"">30 m radial distances from the septic tank were above the WHO permissible limit of drinking water compared to the control. All the water samples had high fecal and total coliform counts that exceeded the international standard of 0 per 100 mL of potable water with counts ranging from 0</span><span style="font-family:""> - </span><span style="font-family:"">143</span><span style="font-family:""> </span><span style="font-family:"">cfu/100</span><span style="font-family:""> </span><span style="font-family:"">ml and 53</span><span style="font-family:""> </span><span style="font-family:"">-</span><span style="font-family:""> </span><span style="font-family:"">463/100</span><span style="font-family:""> </span><span style="font-family:"">ml for FC and TC respectively. High fecal coliform and detection of <i>E. coli</i> in most samples is an indication of fecal pollution possibly from their close proximity to soak away septic sewage. The high nutrient levels detected in samples at distances between 0</span><span style="font-family:""> </span><span style="font-family:"">-</span><span style="font-family:""> </span><span style="font-family:"">30</span><span style="font-family:""> </span><span style="font-family:"">m as compared to the controls may also be attributed to its close proximity to septic tanks. This study, therefore, accentuates the need for the owners of the water points to site their water source at least 30m away </span><span style="font-family:"">from </span><span style="font-family:"">localized sources of pollution as well as treatment of groundwater before use.
