To clarify the possibility of using bacterial flora as a pollution indicator, water samples from river were collected and analyzed from July ١٩٩٩ to February ٢٠٠١ for dissolved oxygen (DO), NO٣-N, NO٢-N, NH٤-N, PO٤-P, suspended solids (SS), biological oxygen demand (BOD) Heterotrophic Bacteria were identified to genus level, and another part of it was identified to Enterobacteriaceae.