Water loss management experience of Lithuania

Abstract

This article presents some general techniques for real water loss reduction and the results of tests on the ways for reduction of apparent water losses in Lithuanian water supply systems. It has been determined that the replacement of customer water meters (by Class C meters) can result in 10-15% reductions in apparent water losses. There is also presented a definition of night flow elements such as real water loss, night water consumption and background water loss. The article also defines minimum night-time water consumption for a single user which was determined as (0.9 l/h/flat).