A survey of bacteriological quality of drinking water in North Gondar

Abstract

Background: The high prevalence of diarrheal disease among children and infants can be traced to the use of unsafe water and unhygienic practices. The over all concept adopted for microbiological quality is that no water intended for human consumption shall contain E. coli in 100 ml sample. But, a 1-10 E.coli count per 100 ml is acceptable that needs regular sanitary checks for un chlorinated water.

Objectives: To assess the extent of bacterial contamination among protected and unprotected water sources.

Methods: A cross-sectional study on drinking water quality in North Gondar region was conducted from May to June 2000. Water samples were taken for bacteriological analysis.

Results: Analysis of protected springs, protected wells and water lines showed that 35.7%, 28.6% and 50% of the water samples had E. coli, respectively. On the other hand, 50% of the unprotected wells and springs had a fecal coliform count of 180 and above.

Conclusions: The majority of the drinking water sources are either of unacceptable quality or grossly polluted. Regular quality control mechanisms need to be in place to ensure safety of drinking water. [Ethiop.J.Health Dev. 2004;18(2):112-115]