Seepage Taking a High Toll On Dwindling Water Resources of Iran

A large volume (20-35%) of drinking water is lost due to seepage and rusting pipelines in the country. 
Almost half of the water network in cities and small towns are old and should be replaced to reduce the monumental water loss in the network as the nation continues to struggle with the worsening water crisis.
ISNA says non-revenue wastage rate is 27%, of which  15% are real losses (through seepage, also referred to as physical loss) and 12% are apparent losses (through water theft or metering inaccuracies).
A mind-boggling 700 million cubic meters of water is wasted annually at a time when the nation’s prominent environmentalists and economic experts struggle to find effective ways to curb consumption and waste.