Minimum night flow – NRW Management

Sanflow

The SANFLOW program represents the first of several programs that are being developed through the WRC in order to assist water suppliers to manage and reduce their levels of unaccounted-for water.

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.

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.

Sanflow User Guide

The SANFLOW model is designed to help water suppliers to determine the level of leakage in a particular zone metered area (ZMA) from the analysis of recorded minimum night flows.

Disclaimer: Although the WRC has attempted to ensure that the information contained in this website was obtained from reliable sources, and is considered true and correct at the date of publication, and while every effort has been made to provide accurate and comprehensive information, the WRC does not warrant, guarantee or represent that the information is up to date, or free from errors or omissions, and assume no liability or responsibility for any error or omission in the information, for the results obtained from the use of this information, or for any loss, consequential, special or similar damages, cost or expense incurred or arising from any person using, interpreting or relying on the information, even if advised of the possibility of such loss, damages, cost or expense, whether caused by reason of any error, negligent act, omission or misrepresentation in the information or otherwise.

Disclaimer: Although the WRC has attempted to ensure that the information contained in this website was obtained from reliable sources, and is considered true and correct at the date of publication, and while every effort has been made to provide accurate and comprehensive information, the WRC does not warrant, guarantee or represent that the information is up to date, or free from errors or omissions, and assume no liability or responsibility for any error or omission in the information, for the results obtained from the use of this information, or for any loss, consequential, special or similar damages, cost or expense incurred or arising from any person using, interpreting or relying on the information, even if advised of the possibility of such loss, damages, cost or expense, whether caused by reason of any error, negligent act, omission or misrepresentation in the information or otherwise.