Water quality analysis for domestic use public water supply in the case of Asella town at the source of Ashebeka River, laboratory based cross-sectional study design
Abstract 1.Abstract Background Water is essential for life. The objective of this research was designed to assess the physicochemical & bacteriological quality of drinking water come from Ashebeka river as a supply of Asella town. Methods A cross-sectional study design was implemented on the study sites. Water samples had been taken for laboratory analysis. Statistical analysis were carried out with Epi info 7 for data entry & STATA 15 for data analysis. Results The first round laboratory test results for:-BOD test result 4mg/L at site one, 2 mg/L at fourth site, & 6 mg/L at site eight. COD test result 40mg/L at site one, 20 at fourth sites, & 60 at site eight. The result of total & fecal coliform count greater than 180CFU/100ml & Escherichia Coli 40 CFU/100ml of sample for the first sites. The laboratory investigation during the second round test results for:- turbidity measure 162.06 NTU at site one, 5.84NTU at site two, 6.94NTU at site three, 5.48NTU at site four, 6.57NTU at site five & 8.76NTU at site six. The chemical analysis result had found that fluoride concentration 0.5mg/L at site one, 0.48mg/L at site two, 0.44 mg/L at site three & at site four, 0.43mg/L at site five, & 0.01mg/L at site six. Aluminum taste result nill at first site, 0.54mg/L at second site, 0.24 at third site, 0.48mg/L at fourth site, 0.39mg/L at fifth site & 0.110mg/L at sixth sites. the calcium concentration had found that 8 mg/L at first sites & third sites, 6.4 mg/L at the rest sites. The magnesium test results had found that 0.96mg/L at first & fifth sites, 1.92mg/L for the rest sites. The dissolved oxygen concentration at first site was 3.667mgL, at second sites 5.333mg/L, at third sites 6.0mg/L, 4.667mg/L at fourth sites, 5mg/L at fifth sites & 2.667 mg/L at sixth sites. Conclusions Water quality was acceptable even though improvement will be required on chemical parameters. Keywords : Water pollution, Physico-chemical and bacteriological water quality, Escherichia Coli & coliform counts.