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In the following cities high levels of non-revenue water have been substantially reduced: Dolphin Coast (iLembe), South Africa, 30% in 1999 to 16% in 2003 by the private utility Siza Water Company; [38] Istanbul, Turkey, from more than 50% prior to 1994 to 34% in 2000 by the public utility ISKI; [39]
However, in other African countries the level of non-revenue water is extremely high: For example, it exceeds 45% in Zambia, is more than 60% in Maputo (Water supply and sanitation in Mozambique|Mozambique), 75% in Lindi (Water supply and sanitation in Tanzania|Tanzania) and 80% in Kaduna (Nigeria). [55]
On the other hand, NWSC was in bad condition with regard to operational and financial aspects. For example, non-revenue water (NRW), water which is produced but not billed for several reasons such as leakage and illegal connections, stood at 60 percent. The utility was heavily overstaffed, and staff costs accounted for 64 percent of the total ...
The rate of non-revenue water is the lowest in the region at 21% in 2012. [5] Access ... Compared to other North African countries, Tunisia has developed and adopted ...
Non-revenue water. The average level of non-revenue water among the 20 regional water utilities was 45% in fiscal year 2006–2007. Data reported by the Ministry of Water and Irrigation in 2009 show that non-revenue water in urban areas varies between 55% in Dar es Salaam and 25% in Tanga. It is estimated that non-revenue water is higher in ...
One indicator to measure the technical efficiency of water utilities is the level of non-revenue water. In a well-managed utility that level should be below about 25%. In Johannesburg, the estimated level declined from 44% in 2003 to 31% in 2006. In Durban it stood at an estimated average of 31% between 2002 and 2006.
In October 2006, under the Presidency of John Kufuor and with the support of the World Bank-funded Urban Water Project (see below) a five-year management contract was signed between the GWCL and Aqua Vitens Rand Limited (AVRL), a consortium of the Dutch public water company Vitens and the South African public company Rand Water. The main ...
Only one Water Services Providers (Nyeri) met the benchmark set by the Ministry of Water and Irrigation with levels of NRW of less than 20%. In Nairobi NRW levels were 39%, in Mombasa 48%. Based on the unit cost of production, the nationwide losses due to non-revenue water in 2014 were estimated at KSh.5.2 billion/=, equivalent to US$52 million ...