In 2010 the level of non-revenue water was 62 percent.

Non-revenue water has been estimated at being higher than 65%.

In 2007 reported figures for non-revenue water varied between 10% and 55%.

Non-revenue water is estimated to be high at 62%, compared to the regional average of 40%.

These figures for non-revenue water seem to have improved, however, over subsequent years.

Average non-revenue water was 7.3% in 2007, varying from less than 5% up to 15%.

The reduction of non-revenue water and was an important means to achieve these objectives.

The government says it wants to reduce non-revenue water to 25% by 2015 and 15% by 2025.

It also included incentives for the reduction of non-revenue water in the contract.

In some cities, non-revenue water is as high as 75%.