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My Garden Laboratory Experiments in technical approaches to rural water supply, sanitation and hygiene carried out in my garden and home and then in the world beyond

Dr Peter Morgan, winner of the 2013 SIWI World Water Prize, is one of the founding fathers of the Water, Sanitation and Hygiene (WASH) sector. This book is a fascinating overview of his long career and provides insights into how he and his collaborators developed some of the most effective and widespread WASH technologies, including the Ventilated Improved Pit (VIP) Latrine, as many contributions to rural water supply, most notably the evolution and improvement of the Zimbabwe Bush Pump.

This personal and informative account should be read by all WASH professionals. | »

SADC-GMI Short Course 1: Drilling Supervision (2018) 23 – 27 April 2018, Institute for Groundwater Studies, University of the Free State, Bloemfontein, South Africa

The Drilling Supervision short course was conducted to participants from Southern African Development Community (SADC) member states. The training was conducted as part of Continuous Professional Development (CPD) for professionals in the groundwater industry. In the modern professional ethics, the groundwater work falls under the hydrogeology/geohydrology profession. However in most of the developing countries, the hydrogeology or geohydrology professional is just starting to evolve and there is therefore limited number of specialized hydrogeologist/geohydrologist experts, thus the training did not exclude all other professionals who are involved at various levels in groundwater.

The course covered: Geology and Groundwater Occurrence; Understanding Basic Aspects of Groundwater; Principles of Borehole Supervision; On-site Supervision; Drilling Preparation; Drilling; Borehole Development and Completion; Field demonstration of pumping test; and Borehole profiling and collection of groundwater samples | »

Zimbabwe bush pump - 53mm open top cylinder model

The 53mm open top cylinder model using PVC socket unions as 63mm PVC rising main connectors and 12mm stainless steel pump rods.
Backyard trials | »

The Zimbabwe Bush Pump

The 54mm open top cylinder model using PVC socket unions as 63mm PVC rising main connectors and 12mm stainless steel pump rods.

This report presents a series of backyard trials conducted by Peter Morgan which emphasise the importance of matching the borehole drilling, casing and hand pump for the Zimbabwe Bush Pump. | »

The Zimbabwe Bush Pump: 54 mm open top cylinder model Recent research into technical methods of reducing down time, using standard downthe- hole equipment

The history and development of the Zimbabwe Bush Pump is well recorded in numerous documents (see It has been the Standard National Hand Pump option for the country since 1933 and has passed through a number of technical developments since that time.

Currently over half the estimated 50 000+ Bush Pumps placed in the rural areas within Zimbabwe are out of action. This is a combination of technical, economic and other problems faced by the country at this time. This report attempts to make suggestion which address the technical problems. Most of these technical problems are found in “down-the-hole" equipment of the pump. Standard down-the-hole equipment includes 50mm GI pipe as the rising main, a 600mm long 75mm brass cylinder with matching piston equipped with two leather seals, a heavy duty brass foot valve and mild steel 16mm pump rods.

This report discusses small modifications of current standard down-the-hole equipment, namely 50mm GI rising main, 75mm cylinder and heavy duty foot valve and 16mm steel pump rods. Minor refinements are made to the design or method of installation which have the potential to overcome many of the “down-the-hole” problems. The use of GI pipe has been retained partly because there is no other rising main option available which can cope with the wide range of depths which the Bush Pump operates in (3m to 100m). It is known that aggressive ground water occurs in some parts of Zimbabwe, and this can cause problems with corrosion in both the rising main and rods. But overall the problem of corrosion is not so large as to require a major shift away from the standard equipment. | »

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