We design, manufacturing Erection & commissioning of Sewage treatment plants for varied industries on turnkey basis in Chennai Tamilnadu India. We Design, Fabricate, Supply, Erect and Commission Sewage Treatment Plants (STP) for treating sewage generated by Industry, large colonies, Hotels, Hospitals, IT Parks and commercial buildings. RRR ENVIRO SYSTEMS offers a wide variety of options for purification of sewage water from different sources either from toilet kitchen , washbasin etc,.. . Source of Domestic sewage Water Wastewater comes from ordinary living processes: bathing, toilet flushing, laundry, dishwashing, etc. It comes from residential and domestic sources. Wastewater is broken into two categories, depending upon the source. 1. Gray water: Gray water is from showers, baths, whirlpool tubs, washing machines, dishwashers and sinks other than the kitchen sink. 2. Black water: Black water is from toilets and kitchen sinks. Characteristics of domestic sewage