they are closely relalated, ...

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they are closely relalated, UFW is water that is lost due to leakages ,water theft and it is not known where it have gone. at the same time NRW is water that is lost the same as unaccounted water and some water that is known where it has gone bt not being paid for, for example water that is taken from metered stand pipes and delivered by bulk tankers to provide vulnarable societies and is not being paid for