“…This river water contains a large amount of trace toxic organic pollutants, because it receives a large quantity of waste water drained from the activities of human life, sewage treatment plants, industrial waste plants, agriculture and road runoff. Many studies have been reported in which municipal river water shows mutagenicity [1][2][3][4][5][6][7][8][9][10][11][12][13][14] and its character is derived from polycyclic aromatic hydrocarbons (PAHs) including nitro-and amino-derivatives. [1][2][3][4][5][6] Recently, WHO established the guidelines for fluoranthene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo (a)pyrene, benzo(ghi)peryrene and indeno (1,2,3-cd)perylene as possible carcinogenic pollution indicators of drinking-water.…”