The Wastewater Treatment Plants treat sewage water from various sources and makes it reusable. It comprises several processes that address specific needs for wastewater treatment. The treatment system treats the sewage from domestic use, rainwater, runoff, and other pollutants that go down the street gutters. The treatment plant may include one or more of the following rather than the conventional primary, secondary, and disinfection sequence of sewage treatment. It uses physical, chemical, and biological processes to remove physical, chemical and biological contaminants to make the water and solid waste reusable. The Wastewater Treatment Plants are very efficient and useful.