- 01/01/2008
- Technical Documents
Water New Zealand provides are suite of resources to provide water suppliers with the tools necessary to firstly analyse and reduce the level of water losses in a water distribution network.
Water Loss Guidelines, February 2010 - Provide a strategy and set of actions for identifying and reducing water loss level
Benchmarking of Water Losses NZ Manual - This document is the User Manual for the 2008 upgrade of the Water Loss Benchmarking Software (BenchlossNZ)
Benchloss Software - The BenchlossNZ 2008 software is an Excel Workbook that processes basic information entered by the user in such a way that:
- Unavoidable Annual Real Losses are calculated for any individual system
- Components of the IWA standard Water Balance are calculated for any system and year
- Selected IWA Performance Indicators are calculated and compared with the values from the International Data set used in the 'AQUA' December 1999 paper (Ref 6). A facility is also provided for comparing calculated PIs with a New Zealand Data set, when such a data set becomes available.
This version of CheckCalcsNZ is designed to be complimentary to BenchlossNZ by:
- providing a quick streamlined version of the Water Balance and PI calculations for water suppliers with smaller systems, and for water suppliers' sub-systems;
- allowing the Annual Operating cost required for the NRW Financial PI Fi47,
- NRW% by $ value - to be calculated according to the latest IWA principles;
- quickly identifying appropriate action priorities for different World Bank Institute Performance Bands A to D;
- giving an overview of pressure management opportunities and probable range of reduction of leak flow rates, new burst frequencies & customer metered income.
Relevant Water Loss Technical Papers
- Including the effects of pressure management in calculations of Short-Run Economic Leakage Level, Fantozzi
- Pressure management extends infrastructure life and reduces unnecessary energy cost, Julian Thornton & Allan Lambert
- Water Loss Performance Indicators, Roland Liemberger
- Practical experience in applying advanced solutions for calculation of frequency of intervention with Active Leakage Control: result obtained, Benvenuti
- Water 21, December 2006, Managing pressures to reduce new breaks, Julian Thornton & Allan Lambert
Linked Attachments
Attachments
- Water Loss Guidelines February 2010 FINAL.pdf
- Benchmarking of Water Losses NZ Manual FINAL.pdf
- Benchloss Software Feb 2015.xls
- CheckCalcs NZ May 13.xls
- Including the effects of pressure management in calculations of Short Run Economic Leakage Level.pdf
- Pressure management extends infrastructure life and reduces unnecessary energy cost.pdf
- Water Loss Performance Indicators.pdf
- Practical experience in applying advanced solutions for calculation of frequency of intervention with Active Leakage Contro.pdf
- Water 21 December 2006 Managing pressures to reduce new breaks.pdf