The Microbial status of village drinking wells Rumshgan city

Water wells is one of the most important water resources to supply water for village and town areas. Aim of this study was to evaluate the microbiological quality of domestic water wells there are in villages located in Rumeshgan.
This cross-sectional study was performed in 2014-2015. Sampling was performed using sterile sampling bottles. The MPN (most probable number of coliform/100mL) and standard IMVIC test utilized as microbiological indices to evaluate water quality. Sampling and sample transportation and sample analysis were done according to water and wastewater standard methods.
Based on obtained results positive samples were as following: 27 samples with E. coli¡ 24 samples with klebsiella pneumoniae ¡ 24 samples with klebsiella oxytoca¡ 21 samples with Enterobacter bacteria¡ 36 samples with citrobacter freundii¡ 34 samples with citrobacter koseri and only 3 samples were free of microbial contamination. The pH value for all samples was in standard range. The mean value of water conductivity for studied wells was 951 µS/cm.
The results of the study showed that the level of water contamination in sudied domestic water wells was very high. Therefore¡ using and drinking water from domestic water wells can pose a great threat and risk of waterborne epidemics by bacterial pathogens. Water supplying authorities should consider suitable disinfection¡ education and monitoring of water quality for the provision of contamination free drinking water to prevent waterborne disease outbreaks.