This powerpoint presentation presents the following topics: AWWA/IWA Water Audit and water balance approach;
real losses;
apparent losses and unbilled authorized consumption;
current approach assumes all losses are non-revenue water (NRW); revenue and non-revenue water; four scenarios that consider the same example water balance, i.e. losses at 25.5% of system input volume (SIN); compounding errors; and, cost benefit analyses. Presentation conclusions indicate that: the water audit and water balance approach is an extremely
useful tool for any utility to manage its existing losses and
identify capital expenditure requirements for future loss
reduction;
all loss components have an implicit impact upon the
rates design (and vice versa);
the repeatability, reproducibility, accuracy, and stability of
the source data must be fully understood;
the effect that errors can have upon the results and
recommendations must be fully understood; utilities must know the economic levels of each loss
component (even if the current levels are included within
the rates design);
these levels should be re-evaluated on an annual basis to
determine if economic changes can justify investment to
reduce any or all components; and,
loss reduction results in increased revenue for additional
investment, future planned capital works, or delaying
future rates increases. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.6 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 34 |
| Published : | 11/01/2008 |
