Physico-chemical And Microbiological Assessment Of The Quality Of Drinking Water Supply In Chancho Town North Shoa Ethiopia

The residences of Chancho town depend on tube wells water for drinking and otherrnactivities. The aim of this study was to assess the drinking water quality of this water and torncheck the water quality along storage reservoirs and all the way to the end users (private taprnwater and household containers). Descriptive study was conducted to assess the quality ofrndrinking water supply in Chancho town at the point of storage reservoirs, end user taps andrnhousehold container water system. The water handling practice and sanitary condition in therntown was also studied. Data were collected using stratified simple random selection method andrnquestionnaire responses. Thirty triplicate water samples were collected from 2 reservoirs, 14 endrnuser taps and 14 household containers. TC and FC were determined using Membrane Filtrationrnmethod. Nitrate and phosphate were determined using HACH LANGE DR-2800 Photometer byrnAscorbic acid method and Cadmium Reduction methods, respectively. TH, Ca2+, and Mg2+ wererndetermined by EDTA Titrimetric Method. The rest physicochemical parameters (turbidity,rnTemp., pH, TDS and EC) were determined using field laboratory equipments mercuryrnthermometer, pH meter, CL 5LD turbid meter and Con 2700 Conductivity meter. Two hundredrnsixty-six samples of households were selected for the questionnaire by stratified simple randomrnselection method. Mean values of Temp., pH, Turbidity EC, and TDS, were 17.60±0.80 oC,rn6.07±0.21, 0.69±0.06NTU, 287.83±7.98μS/cm, and 260.85±6.89mg/l, respectively. Turbidity,rnTDS, and EC values achieved with WHO (2011) standard but, and pH were not compared withrnWHO (2011) standard. Similarly, mean values of NO3rn-, PO4rn3-, TH, Ca2+ and Mg2+werern0.23±0.09mg/l, 0.20±0.07mg/l, 127.89±3.57mg/l, 30.86±1.44mg/l and 12.39±1.89mg/l,rnrespectively which were fulfilled with WHO (2011) standard. Test results for FC and TCrn(14.89±10.42CFU/100ml and 34.90±19.11CFU/100ml, respectively) indicated that the waterrnsamples did not fulfilled with WHO (2011) standard. Correlation matrix shows that the resultsrnwere statistically highly significant (p < 0.01) and moderately significant (p < 0.05). The studyrnrevealed that the water is contaminated by bacteria. Therefore, treatment of water and publicrnhealth education to improve the water handling practice of the people in the area are veryrnimportant.

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