< p > < span =风格"font-size:14px">The physico-chemical parameters (pH, temperature, Free CO₂, DO, CO₃^-, HCO₃^-, Ca⁺⁺, Mg⁺⁺ and Cl^-) were carried out for one year (April 2006 to March 2007) to evaluate the water quality of river Tawi (J&K). Four sampling stations (I to IV) were selected within the city limits of Jammu. Physico-chemical parameters were within the permissible limits but showed a regular trend of increase with increase of sewage contamination, as we move from Station I to IV. Contamination of river water suggests certain control measures to protect the riverine ecosystem for health, hygiene and sustainable environment.