Abstract: Wastewater from homes and industries, without proper treatment, when released into water source can cause harm to aquatic life and disturb the pH of water causing water pollution. In India, water treatment plants are located across various cities. Proper control and monitoring of these plants can help us improve the productivity thereby limiting scarcity of water as proficient use of water can be achieved. Automation in various separation techniques like bar screening, sedimentation, grit removal, chlorination, Oxidation etc. is being carried out by using programmable logic controller. In this paper, the use of PLC and SCADA in sewage water treatment plant is implemented. The obtained purified water is used for domestic and agricultural purpose on the basis of ph.

Keywords: Automation, Programmable Logic Controller (PLC), Supervisory Control and Data Acquisition (SCADA), Water treatment, Potential of hydrogen (pH).