indicators of pollution of surface waters in Zaria (original) (raw)
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Comparative hazard evaluation of enteric bacteria in two surface water sources in Akure, Nigeria
Water Practice and Technology, 2020
This study was carried out to determine the level of enteric bacteria in two surface water sources (river and stream) commonly used for domestic, recreational and agricultural purposes in Akure, Nigeria. This is to gain a better understanding of the level of faecal pollution of the water sources and the potential health risks associated with usage of the waters for human activities. Water samples were collected from the river and the stream from May to September, 2019 (n = 24). The concentration of enteric bacteria in the water samples was determined using the membrane filtration technique, while the physicochemical characteristics of the water samples were determined using the standard method. Results revealed that the concentration of Escherichia coli ranged from 3.00 to 4.78 log10 cfu/100ml and 3.48 to 5.75 log10 cfu/100ml in water samples from the river and stream respectively; Bifidobacterium ranged from 4.18 to 5.00 log10 cfu/100ml and 3.87 to 4.66 log10 cfu/100ml in water sam...
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The assessment of surface waters in Enugu metropolis for fecal coliform bacteria was undertaken. Enugu urban was divided into three areas (A1, A2 and A3), and fecal coliform bacteria analysed in the surface waters found in these areas for four years (2005-2008). The plate count method was used for the analyses. Data generated were subjected to statistical tests involving; Normality test, Homogeneity of variance test, correlation test, and tolerance limit test. The influence of seasonality and pollution trends were investigated using time series plots. Results from the tolerance limit test at 95% coverage with 95% confidence, and with respect to EU maximum permissible concentration show that the three areas suffer from fecal coliform pollution. To this end, remediation procedure involving the use of saw-dust extracts from three woods namely; Chlorophora-Excelsa (C-Excelsa),Khayan-Senegalensis,(CSenegalensis) and Erythrophylum-Ivorensis (E-Ivorensis) in controlling the coliforms was s...
Journal of Applied Life Sciences International, 2016
Aims: The investigation of faecal coliform contamination of domestic water sources in Ebonyi Local Government Area, Ebonyi State, Nigeria was undertaken. Study Design: This was a descriptive study. Place and Duration of Study: Ebonyi Local Government Area of Ebonyi State, Nigeria from September, 2014 to October, 2014. Methodology: Samples from different water bodies in each of four communities in Ebonyi Local Government area were collected and analyzed using standard bacteriological methods for water analysis. Results: In the four communities, well water samples from Mbeke and Ndiagu communities showed high content of faecal coliform with 50%, and 90% respectively, while faecal coliform from stream water samples was recovered more from Ndiabor and Nkaleke communities with 55.6% and 50% occurrences respectively. The result of the percentage bacteriological analysis showed that the faecal coliform and Escherichia coli have 45% and 12% prevalence respectively in stream water samples, 0% prevalence each in borehole water samples and 12.5% prevalence each in pond water samples. Conclusion: The high presence of faecal coliform bacteria in these water bodies used for drinking, swimming and other domestic purposes is of public health significance considering the possibility of serving as vehicles for disease transmission. Effort should be geared towards educating the inhabitants of the study area on the need for proper disposal of refuse, treatment of sewage and the need to purify their water to make it fit for drinking and other purposes.
Assessment of Faecal Pollution in Nta-Wogba Creek in Port Harcourt, Nigeria
The research is on bacteriological analyses of water samples in NTA-Wogba Creek, Port Harcourt, Rivers State,Nigeria. Water samples were collected from Nta-Wogba creek at four different stations and analyzed for heterotrophic bacterial, and faecal coliform counts. Bacteria were isolated and identified using standard microbiology and chemical techniques. High heterotrophic bacterial counts (3.3 x 10 5-9.9 x 10 5 cful/ml), total coliform counts (1.7 x 10 3-2.4 x10 3 cfu/100ml) and faecal coliform counts (2.2 x 10 3-5.4 10 3 cfu/100ml) were observed in all sampling stations. Four bacterial sp were isolated: Klebsiella spp, Staphylococcus aureu, Escherichia coli and Serratia spp. The presence of bacterial agents in the creek has posed a serious threat to the health and wellbeing of users of the creek. It is recommended that adequate waste disposal facilities should be provided to inhabitants of the affected areas to prevent indiscriminate dumping of wastes into the creek. The Environmen...
Cognizance Journal of Multidisciplinary Studies (CJMS), 2023
The assessment of water quality index is essential to investigate the usefulness of any water source. This study arms to assess the water quality index (WQI) and bacterial loads of Ossiomo River, Edo State, Nigeria. Water samples were collected in triplicate from January, 2021 – June, 2021, for physiochemical and bacteriological analyses using standard analytical procedures including pour plate and most probable number techniques. Antibiotic susceptibility testing was carried out using antibiotic disc diffusion method. The results of Water Quality Index values ranged from 275.74 – 357.55 mg/l. Total heterotrophic bacterial counts ranged between 1.1±0.0 – 9.1±2.1×103cfu/ml while the mean coliform counts ranged from 23-201 MPN/100 ml. A total Four (4) bacterial isolates were found and identified as Salmonella enterica, Escherichia coli, Serratia marcescens and Klebsiella varricola. The percentage frequency of the bacterial isolate showed Salmonella enterica 9(26.5) as the highest occurring bacterial while the least was revealed for Escherichia coli 5(14.7). ceftriaxone 100%, gentamycin 100%, ciprofloxacin 100%, azithromycin 80%, pefloxacin 75%, oflaxacin 81%, cefuroxime 94% and ceftazidine 60% were effective drugs for the treatment of illnesses caused by these bacteria isolates whereas, augmentin 0% and nitrofurantoin 0% were non-effective. Ossiomo river different levels of contaminations with chemical agents as well as organic contaminants responsible for water associated diseases among consumers hence; urgent attention must be given adequate treatment prio to consumption to advert water borne illnesses.
Physicochemical and Microbiological Assessment of Drinking Water in Kari Estate Bauchi Nigeria
Journal of Biotechnology Research
Some sources of drinking water in Kari Estate in Bauchi Metropolis were analyzed for physicochemical contents and coliform contamination. A total of five samples were collected from different sources as follows: 2 sachets water, 2 wells, and tap water. The physicochemical analysis included the determinations of temperature, pH, electrical conductivity, total dissolved solids, turbidity, colour, suspended solids, odour, taste, total hardness, iron, nitrate, nitirite, manganese, ammonia, fluoride and cyanide. The two wells had total coliforms of 6 and 10 and faecal coliforms of 4 and 5 respectively. Tap water had total and faecal coliforms of 7 and 3 respectively. E. coli were identified in the samples from wells while Bacillus sp. were found in the tap water. Although the physicochemical contents of the samples were normal range, coliform counts of the wells and tap water were above those set by the Nigerian Industrial Standards (NIS) and the World Health Organization (WHO) standards...