The scarcity of water resources is a concern that currently rages across the globe, including countries that have historically abundant water sources, such as Brazil. The International Water Association (IWA) announces long the water balance (BH) as one of the main tools to control and reduce losses of water distribution systems.

The increasing pressure on global resources continues, and will continue to do so until appropriate engineering solutions and technologies are developed to meet the needs. The UK based, venture capital funded company, i2O Water ltd, are proving how this can be done to the benefit of both water companies and their customers. Often excess pressure exists in distribution networks. This can lead to excessively high levels of leakage on the network and poor pressure being experienced by the customers.

The authors have noticed that water utilities around the world are experiencing difficulty when it comes to the specification of pressure reducing valves. This is of particular concern in complex situations, such as the low pressure systems in Southeast and South Asia or the high pressure differential situations such as in some parts of Europe and South-Africa. This paper will explain the issues around tailoring a valve specification to specific local conditions.

Large customers although small in number represent a significant portion of water volumes registered by meters in a water supply system. As a result, an improved large meters management can provide, with limited effort, excellent results for recovering commercial losses. This particular feature is acknowledged by many water utility managers which select this type of meters as the starting point of their programs for improving meter management.

This paper reflects my thoughts and experiences regarding influences of positive human will power on successful WLM (not specifically but appropriate for our conference) in public water utilities. Resolving problems in Water Loss Management (WLM) involves holistic approach, and I came to a point of understanding that despite available knowledge and technology is still evident slow and harder then expected integration of advanced WLM partly due to continuing reduction of positive and constructive will power among water utility personnel to make necessary changes and improvements.