Abaraogu, Udechukwu John and Dr. Ukpong, E. C.
Civil Engineering Department
Faculty of Engineering University of Uyo, Nigeria.
In this work, the physical chemical and biological water treatment of raw and filter water through sand filtration in Kwa community of Cross River State, Nigeria were compared to the Nigeria and world Health organization standards. The mean results after the experiment showed that PH value for the filtered water is 6.6mg/l from 7.6mg/l when it was unfiltered, suspended solids droped from 12.29 (for raw water) to 7.7mg/l after filtration colour reduced from 12.22 TCU to 10143TUC after filtration Turbility was from 14.4NTU to 8.2NTU, dissolved oxygen from 4.0mg/l to 3.5mg/l ammonia from 0.32mg/l to 0.02mg/l, sodium from 30.5mg/l to 25.5mg/l, chloride from 12.1mg/l to 17.1mg/l, total dissolved solids (T.D.S) from 11.4mg/l to 25.76mg/l, the conductivity was from 18.06MS/Cm t0 42.16MS/Cm and the Total coliform count was from 0.043CFU/ML to 0.0217CFu/ML. These figures showed that the sand filtration was very good in treating the water to correspond with the Drinking water standard.