The key drivers for this project with the San Francisco Public Utility Commission (SFPUC) included:
pursue a proactive approach in reducing
water losses;
evaluate potential for economic reduction of
water losses;
include findings in water conservation
portfolio;
be a national leader in water loss
management and water conservation;
benefits of an independent audit; and,
learn the new standardized AWWA/IWA
water balance methodology. The project scope included: detailed "top-down" annual water balance;
verification of system input volumes;
identify, standardize and confirm consumption
volumes;
analysis of customer meter accuracy;
identify volumes of apparent and real losses;
assessment of various unmeasured uses;
calculate confidence limits for each component of the
water balance;
determination of performance indicators;
component analysis of real and apparent losses; and,
assess economic optimum of real losses. Water audit and related analysis have proven that SFPUC
is very effective in:
managing its county line meters;
managing billing database;
managing apparent losses; and,
managing real losses through its reactive leakage control policy.
Further findings included:
reduction of real losses is cheapest source for new water
resources;
active management of real losses is an economic and beneficial
component of SFPUC's water conservation portfolio;
SFPUC can prove to do everything economically feasible to
optimize the use of water resources;
optimum management of real losses will help to maintain or
improve level of service to customers; and,
applying best management practice in water loss control
reduces liability to water supplier. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 3.6 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 28 |
| Published : | 06/01/2007 |
