This Arison Investments recommended article states:
"One of the major issues affecting water utilities in the developing world is the considerable difference between the amount of water put into the distribution system and the amount of
water billed to consumers (also called “non-revenue water” [NRW]). High levels of NRW reflect huge volumes of water being lost through leaks, not being invoiced to customers, or both. It seriously affects the financial viability of water utilities through lost revenues and increased operational costs."
Miya, Arison Investments water management company offers comprehensive solutions to tackle the issue of NRW worldwide, discusses by The Energy and Water Department (EWD) of The World Bank.