Seasonal and regional variation of physicochemical and bacteriological parameters of surface water in El-Bahr El-Pherony, Menoufia, Egypt.

Abstract

2 Abstract: Al-Bahr El-Pherony is considered one of the important sources of fisheries in Menoufia Government. Their level of pollution is swelling day by day due to non-availability of proper drainage system. Twenty- eight water samples were collected seasonally during January - September 2013. Some environmental parameters such as temperature, transparency, dissolved oxygen; biological oxygen demand and pH were monitored. In addition, the bacteriological analyses involved total viable bacterial counts (TVBCs), Total Coliforms (TC), Fecal Coliforms (FC), E. coil, Fecal Streptococci (FS) and some pathogenic bacteria were counted. The results of physicochemical parameters showed that the temperature values varied from 21.4°C to 32°C and transparency from 10 cm to 65 cm. TVBCs at 22 °C and 37 °C were 27 x 10 -210 x 10 and 10 x 10 - 176 66 6 x 10 CFU/ml, respectively. The results of the fecal indicators counts revealed that their densities increased from 6 winter to summer along with BOD . In winter, CCA (Canonical Corresponding Analysis) showed strong relation 5 of Salmonella with BOD and negative one of P. aeurginosa and FS with temperature. In summer, showed 5 positive correlation between S. aureus and DO. It was concluded that El-Bahr El-Pherony water was subjected to sewage pollution during the study period and had poor microbial quality.