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Non-revenue water (NRW) is water that has been produced and is "lost" before it reaches the customer. Losses can be real losses (through leaks , sometimes also referred to as physical losses) or apparent losses (for example through theft or metering inaccuracies).
Non-revenue water (NRW) is defined as the difference between the amount of water put into the distribution system and the amount of water billed to consumers. It is usually used as an indicator for water utility performance. High levels of non-revenue water usually indicate low-quality water utility. It has three components:
In West Manila, according to MWSS, non-revenue water actually increased during the first years of the concession from 64 percent in 1997 to 69 percent in 2002, compared to a target of 30 percent. [20] By September 2011 it had been reduced to 47 percent, a level that still remains much higher than in East Manila. [33]
When Maynilad was re-privatized in 2007, the company was losing some 1,500 million liters of treated water per day. [13] This translated to a Non-Revenue Water (NRW) level of 67% [14] —meaning two-thirds of the potable water it was producing was being lost.
Desludging trucks of Manila Water in 2012. Manila Water Company, a publicly listed company and a subsidiary of Ayala Corporation, holds the exclusive right to provide water and used water services to over six million people in the Manila Water Concession, particularly the East Zone of Metro Manila and Rizal Province consisting of 23 cities and municipalities.
The Metropolitan Waterworks and Sewerage System [1] (Tagalog: Pangasiwaan ng Tubig at Alkantarilya sa Kalakhang Maynila), [5] formerly known as the National Waterworks and Sewerage System Authority (NAWASA), is the government agency that is in charge of water privatization in Metro Manila and nearby provinces of Cavite and Rizal in the Philippines.
The National Water Resources Board (NWRB) is an agency of the Government of the Philippines working on water resources and potable water. It has policy-making, regulatory and quasi-judicial functions.
The water crisis in Metro Manila, Philippines is an ongoing crisis affecting many households in Metro Manila in the form of water interruption. The crisis usually occurs in the dry season, from March to May. The water suppliers, Manila Water and Maynilad, hold responsibility for this crisis.