Abstract: A combined approach to enhance the security of oil and water supply pipeline infrastructures is proposed and investigated. The most important factor affecting the performance of the traditional system is the mannual patrolling which is difficult and only provides observation where the patrolling team is present. This study highlighted that by deploying a combination of wireless sensor network in conjunction with the conventional trends and microwave network, the time of reporting any leakage to the control room can be reduced considerably. This in turn provides ability to protect the oil pipelines from further loss or damage and discontinuation of operation. The simulation tests were carried under three different scenarios i.e., minor level leakage, major level leakage and any criminal activity to break a pipeline. Based on the simulation results, it is demonstrated that the reliability of monitoring oil pipelines provided by the new proposed system can be increased. The paper presents the motivation for and the potential advantages of the proposed WSN system for enhancing the security of oil and water supply pipelines.