The document describes root zone wastewater treatment technology. It aims to analyze wastewater treatment without preliminary treatment using this method. Various plants used include reeds, cattails, and canna lilies. Laboratory tests on influent and effluent showed reductions in turbidity, hardness, BOD, COD, nitrates, and phosphates of 50-90%, and increased dissolved oxygen. The system was effective at treating domestic and dairy wastewater without chemicals or energy inputs, making it suitable for decentralized use.