41. International Wastewater Systems is another company addressing waste heat recovery systems. 42. A wastewater purification facility was installed at Ramat Hanadiv in 1998. 43. It addresses the practice of managing wastewater at the residential scale. 44. Argentina does not have control means for wastewater treatment or disposal. 45. The Decree regulates the quality of water bodies and wastewater discharges. 46. Furthermore, some existing wastewater treatment plants do not function properly. 47. This is a major improvement for microalgal technology for wastewater treatment. 48. Several Italian cities are in breach of EU wastewater treatment standards. 49. Also occurs naturally in sewers and wastewater -treatment areas. 50. Approximately 90 percent of the wastewater leaves the city without being treated,
