High levels of Non-Revenue Water (NRW) are a major challenge for municipalities and utilities worldwide
Author: Leonie Vorster
Meter Management
Water metering is an excellent application of the principle to measure, is to know, and knowledge of what is happening with the water in a distribution system is the key to properly managing this resource.
Hour-Day
The Hour-Day Factor is simply a factor that can be applied to a reduction (or increase) in the pressure dependent flow occurring at the hour of Minimum Night Flow to provide an indication of the total daily saving (or increase) in pressure dependent flow that can be expected over the whole 24-hour period.
Economic Model for Leakage Management for Water Suppliers in South Africa (ECONOLEAK)
The ECONOLEAK mode is aimed specifically at determining when a water supplier should invest in active leakage control for a specific zone metered area.
Aqualite Water balance software
AQUALITE is the first of a new generation of models designed to assist water suppliers in managing their non-revenue water. It is effectively an annual water-audit model based on the latest IWA best practice. It has been developed through close co-operation of numerous internationally recognized water loss managers from several countries and incorporates a host of features, many of which are not available in other water audit models.
Aqualite v204
Aqualite v204
Water Demand Management
This guide concentrates on highlighting the key issues in simple and straightforward terms in an attempt to explain what interventions can be undertaken in order to reduce water losses from municipal water supply networks and how best to implement them.
Benchmarking leakage from water reticulation systems in South Africa 2004
The BENCHLEAK software was developed through the Water Research Commission to provide a simple yet pragmatic approach to the evaluation of leakage from potable water distribution systems. The model is used to assist water utilities to evaluate the levels of leakage and non-revenue water in their water distribution system.
Assessment of apparent losses due to meter inaccuracy – a comparative approach
The empirical method for the determination of apparent water losses, using the assessment of consumption patterns and the laboratory testing of water meters, is compared against alternative methods of comparative billing and meter change analyses for one of the largest water utilities in South Africa.
Evaluation Toolkit
Gauteng has limited natural water resources and therefore relies on a very large and highly engineered system called the Integrated Vaal River System (IVRS) which draws water from five different river basins across six provinces.