KAMLESH KUMAR YADAV
Abstract
This paper describes the pollution status of five major drains entering into the river Adhwara at Darbhanga, studies were conducted during Feb. 2008- to Jan. 2009. The pH values of the drains water varied from 7.48 to 7.80. Conductivity ranged from 186 to 296 mmho/cm, T.D.S. varied from 290 to 470 mg/L and Total hardness from 192 to 388 mg/L. The Turbidity varied from 28.6 to 37.7 NTU. The Chloride content varied from 48.7 to 76.8 mg/L. Sulphates from 210 to 310 mg/L Nitrate from 11.2 to 23.6 mg/L , Calcium from 190 to 372 mg/L and Magnesium from 69 to 112 mg/L. The total alkalinity varied from 26 to 44 mg/L. The D. O. fluctuated from 2.75 to 4.29 mg/L. The B.O.D. varied from 130 290 mg/L.