Effective Wastewater Management in Zimbabwe: Best Techniques for Resource Recovery & Reuse

 However in my study appropriate techniques for waste water management are clearly mentioned.

14. Malithi, (2016). The study "Impacts of non revenue water the National water supply and drainage board and methods to minimize it" 

Carried out by Sri Lanka's National Water Supply and methods to minimize it is to investigate the impacts of non-revenue water in Sri Lanka's national water supply and the methods to minimize them. 

Through this study, the so-called revenue water is the gap between the amount of water added to the water supply system and the amount of water charged as authorized consumption.

mentioned. Based on that, various cities of the world are facing this problem. The percentage of non-revenue water in Colombo, the commercial capital of Sri Lanka, exceeds 45%.