Effluent Water Treatment Plants ( ETP) play significant role in minimizing environmental pollution caused by discharged of industrial waste water that has ph value range of 5.5 to 9.o ( as per BIS norms). Provided automatic plants have been specially developed to treat discharge effluent by various factories so that these can be re-used. Available in different capacity based choices, this array of plants is effective in treating inorganic matter, organic content, oil and grease, heavy metals and other contaminants present in effluent water. Operation of Effluent Water Treatment Plants is based on steps like coagulation, ph controlling, equalization, sedimentation and filtration to name a few.