• Inaocha Thangjam
• Kheroda Maibam

The present study was carried out to analyse microbial growth and water quality based on seasonal distribution pattern of physio-chemical parameters of the river Nambul flowing in heart of Imphal city during the year 2018. A total of eight parameters were monitored for a period of one year to assess the standard of water quality of river Nambul with reference to its pollution status. It was observed that AT found higher in rainy, low in winter; WT high ranged 26.9 ± 0.240C in rainy, low ranged 18.34 ± 2.080C in winter ; pH high in the rainy (6.92 ± 0.40), low in winter (5.76 ± 0.30); DO ( 6.28 ± 0.18 mg/l) high in winter, low in rainy (4.16 ± 0.82 mg/l); BOD ranged maximum in summer , minimum in rainy; Hardness value high in summer (112.28 ± 1.09 mg/l), low in winter (79.65 ± 11.02 mg/l). The Chlorine and Phosphorous content were found to be maximum in winter season. The collected water sample was done serial dilution upto 10 -9 and isolated with Nutrient Agar. A total of eight isolates were performed biochemical tests and characterized along with Gram’s staining technique. The bacterial isolates were reported that the nature of colonies (bacilli, coccus); Gram nature (Gram positive / Gram negative). Significant seasonal variations of the different parameters, microbial growth were observed and the study has a great value in terms of river ecosystem as well as water quality in different seasons. Furthermore, there is need for implementing conservation measures and generating awareness among the people of Manipur towards the Nambul river which provides an integral part of the social, economic and cultural life.

Sewage , Nambul , Bacteria , Physio-chemical properties, Loktak lake.

"Analysis of physio-chemical parameters and scanning foldscope in the bacterial characterization isolated from river Nambul, Manipur, North-East India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.846-851, June 2019, Available :http://www.jetir.org/papers/JETIR1907878.pdf

"Analysis of physio-chemical parameters and scanning foldscope in the bacterial characterization isolated from river Nambul, Manipur, North-East India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp846-851, June 2019, Available at : http://www.jetir.org/papers/JETIR1907878.pdf