In this study, samples of freshwater from the river Nile in Egypt were collected and treated using foamed polyurethane (PU)-ground natural fiber bio-composites. This work aims to measure the effectiveness of total dissolved solids and organic contaminates removal using foamed polyurethane /ground coconut fibers, palm fibers, rice and wheat straw bio-composites. Adsorption process in addition to simulate the batch adsorption data were carried out. Effect of bioadsobent dose at contestant pH was investigated. The results of contaminates removals using bio-composites were compared with the commercial powdered activated carbon adsorbent. It is found that low removal efficiency of TDS using PU-ground rice straw bio-composite. Slight removal of total dissolved solids has been recorded using PU-ground coconut fibers and wheat straw bio-composites. PU/ground palm fibers biocomposites adsorbent shows a significant improvement in TDS removal. It is able to remove up to 37% of total dissolved solids contents. Langmuir and Freundlich models were applied using adsorption test data and evaluated. The thermal adsorption of total dissolved solids using ground palm fibers was verified using Langmuir model.