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Water safety in distribution systems

By: World Health Organisation

We take a look at water safety in distribution systems and how the integrity of well-managed distribution systems can protect drinking-water from contamination

The integrity of well managed distribution systems is one of the most important barriers that protect drinking-water from contamination. However, management of distribution systems often receives too little attention. Distribution systems can incorrectly be viewed as passive systems with the only requirement being to transport drinking-water from the outlets of treatment plants to consumers.

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Education needed to improve sanitation

By: Dr. Sudarshan Iyengar, Vice-Chancellor, Gujarat Vidyapith, Ahmedabad

Community health, hygiene, and sanitation have not been a prominent part of the cultural ethos in India over the last few centuries. It is indeed ironic that a country, which, during ancient times, demonstrated very high standards of planned city sanitation, fell into gross ignorance and disrepute with regard to sanitation. Interest in sanitation and hygiene was revived only after the British took hold of the country’s governance after 1860. Demographic records of India suggest that until 1921, Indian population was fluctuating in numbers. Plague, Influenza, and other infectious diseases were rampant until then. Rise in population with the death rate falling faster than the birth rate began only after 1921. Fall in death rate was also because of wonder drugs such as Penicillin, which were invented and introduced in India through government medical care set up. Water-borne diseases continued to be very high and people were largely ignorant about the water source contamination and failed to realise the need for personal hygiene and sanitation. Curative medicine was more popular and powerful. Community health and social and preventive medicine including epidemiology received little attention in medical education. Therefore, Infant Mortality Rate (IMR), Child Mortality Rate (CMR), and Maternal Mortality Rates (MMR) were indeed high, even after independence.

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Field pressure testing 101 (Part 2)

 

By: Renier Snyman – DPI technical and product manager

In the previous edition we looked at why we test and things to do before testing. We now investigate how to determine the test pressure and duration, looking at the procedure of testing

Determining the test pressure
This is where one finds an array of opinions and also where the biggest debates are born. SANS 2001: DP 2 contains three requirements for determining the test pressure when field testing a pipeline. Before we discuss the requirements, please bear in mind the reason for performing the pressure test is to establish that the pipeline does not leak. The reason for raising the test pressure above the operating pressure of the pipeline is to allow the pipeline to settle under pressure and highlight possible leaks that would otherwise only develop after some time under pressure.

Read more: Field pressure testing 101 (Part 2)

WPC’s Environmental Aspects of Plumbing: Part 9 of 9

This study is taken from the World Plumbing Council’s Environmental Aspects of Plumbing study and this is the last of nine parts

Education and certification: green plumbing systems
What makes a plumber or a plumbing system green? Plumbers have long held their mission to be protecting the health of the country, said Steve Lehtonen, spokesperson for GreenPlumbers USA. Because of climate change and global warming, our new mission is to protect the resources of the planet by training plumbers to be advocates and educators in environmental protection and conservation.

Read more: WPC’s Environmental Aspects of Plumbing: Part 9 of 9

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