COLIFORM POLLUTION IN THE SOUTH CASPIAN SEA, GUILAN PROVINCE (ASTARA TO CHABOOKSAR)

Document Type : Research Paper

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Abstract

Coliform pollution brought about by the agricultural, industrial and urban sewage in the south Caspian Sea, GuilanProvince was studied. The study was carried out in coastal areas 0, 1, 2, 5 and 10 meters deep at eight stations using the routine method. The monthly sampling showed that the highest and lowest contamination levels were in the shallowest and the deepest sampled areas respectively. Also, the highest coliform count was seen during winter amounting to 11.40 coliforms in 100cm3 of sea water. We also observed the highest E. coli contamination equal to 4.87 in 100cm3 of sea water during summer period. We conclude that the present condition could be dangerous to the Caspian Sea environment and the people closely related to the sea.

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