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.
Category: Advisory packages, guidelines, and tools
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.
Assessing Non-Revenue Water and its Components: A Practical Approach
IWA Task Forces recently produced an international ‘best practice’ standard approach for Water Balance calculations, with definitions of all terms involved, as the essential first step in practical management of water losses.
National Pricing Strategy for water use Charges
This strategy seeks to facilitate reform in the sector as well to provide transparency and predictability to water users on how water will be priced.
Optimal meter selection
The accuracy curve and envelope of a new water meter is governed by the type of water meter and relevant standards. Water demand patterns vary with time, period, seasons, consumers and combinations of these factors.
Non-Revenue Water in South Africa
Municipal water use in South Africa has been under investigation for many years and the Department of Water Affairs and Forestry has been trying to establish the levels of wastage from all water supply systems countrywide.
Aqualite Water Balance User Guide
AquaLite has been designed to provide a pragmatic and straight-forward approach to a relatively complex issue and its design is based on the experience of many specialists dealing with such issues on a daily basis in many parts of the world.
Guideline for reducing water losses
Many municipalities struggle to appreciate the necessity and benefits of dealing with water losses in their reticulation systems. Council officials will often debate at length over a budget allocation of a few thousand Rand when a road leak will run unattended for weeks if not months which can easily run up a bill of hundreds of thousands of Rand.
Introduction to Operation and Maintenance of Water Distribution Systems
A water distribution system acts as a conduit to reliably transport adequate quantities of safe drinking water to consumers. To achieve this, the system needs to work as intended and maintain a physical barrier between the water inside the network and the external environment.
The Status and Use of Drinking Water
This report is the result of a project carried out to explore the status of water efficient devices in the domestic and commercial environments in South Africa.