Multi Parameter of WSNs Sensor Node for River Water Pollution Monitoring System (Siak River, Riau-Indonesia)

: Indonesia is one of the countries that have many rivers and lakes. It is situated, in South East Asia and enjoys tropical climate all year round. Riau province is located in the centre and middle of Sumatera Island which in the heart of Sumatera. This province has more than five big rivers that are used by the community every day for their daily activities. The rapid economic development has significant impact to the region where many industries operating along the river produce industrial wastes that pollutes the river water. This chapter discusses the development of river water monitoring system where several relevant parameters are monitored. The Wireless Sensor Networks (WSNs) applied in this research integrates sensor node that is embed to multi sensor consist of temperature, dissolved oxygen (DO), pH, and electrical conductivity. The system for monitoring is specially design for ability to monitor level of river water, river water flow rate for environment and flood alert system. WSNs sensor nodes collects information from the multiple sensors and forwards to the WSNs sink nodes which embed to the microcontroller memory and unit as a local database before send the information to the monitoring system. The monitoring system shows the vital information that can be monitored by institutions or local authorities. Prompt action will be can be taken if abnormality is raised by the monitoring system. A prototype of this WSNs nodes designed and tested and the results show that sensor nodes are reliable for the detection of polluted water parameters, water levels as well as river flow rate. Furthermore, sensor node was tested at the Siak river located in Riau Province the compare results with actual river water. All the data were keep in the database for recording of analysis and for future development of monitoring system.