This Preliminary Assessment consists of documenting and clearly visualizing the state of water well drilling in Angola, with clear recommendations on how to strengthen the sector to ensure that effective drilling is performed. “The effectiveness of drilling, in terms of costs, is defined as the optimum value taking into account the money invested in the long term. The holes are made to last between 20 to 50 years. Therefore, the lowest cost well is not always the most cost-effective, especially if the quality of the construction is compromised to save money”. Apparently, in Angola, the term "cost-effectiveness" has been used in a counter-productive way to highlight short-term cost reductions to the detriment of quality.
DISCLAIMER: This is a non-RWSN publication and endorsement by RWSN or any of its member organisations should not be inferred. | »
This handbook covers the design and construction of water supplies which are useful in the rural areas of Zimbabwe and also a range of toilet options which are also suitable. | »
This document summarises a 5-day ‘Water Supply Borehole Drilling Supervision’ training programme held in Balaka / Ntcheu Districts (Malawi) between the dates of 1 to 5 October 2018. This initiative was funded by the Scottish Government and delivered through the University of Strathclyde’s Climate Justice Fund: Water Futures Programme (CJF Programme).
The sessions were facilitated and delivered by staff from Malawi Government’s Ministry of Agriculture, Irrigation and Water Development (MoAIWD), University of Strathclyde (Scotland) and Baseflow (Malawian groundwater focussed NGO). The sessions were aimed primarily at district level field staff from MoAIWD District Water Offices with responsibilities for field level supervision of water supply borehole drilling. Attendees were also welcomed from Regional and National MoAIWD Offices, as well as local and international NGOs.
By the end of the week, each attendee had viewed each step of water supply borehole drilling, construction and testing, through a series of field and classroom sessions delivered by experienced water sector professionals. Malawian standards and international best practice were highlighted and emphasised throughout the week. Attendees were encouraged to get ‘hands-on’ taking samples, measurements and making decisions themselves. | »
In the context of Kenya’s arid and semi-arid lands (ASALs), NGOs and donors as well as private sector players are exploring how they can help vulnerable populations to prepare and build resilience to extended drought sequences and climate volatility. The use of solar-powered water pumps (SWPs) is one approach through which partners are helping to do this. This report is a concept-stage exploration of optimal funding mechanisms to accelerate and incentivize the adoption of SWPs in the Kenyan ASALs, alongside accompanying management systems to ensure financial viability, inclusion and accountability. | »
A solar photovoltaic (PV) water pumping system was investigated to determine performance and
economic viability. An in-built data logger was used to collect real time data on key performance
parameters. Performance indicators were defined and determined, while economic viability was analyzed
using life-cycle cost (LCC) method and these costs were compared with a diesel generator pumping
system. Solar irradiance varied from 63 W/m2 to a peak of 857 W/m2, corresponding to a maximum power
output of 11.75 kW. PV array efficiency of 12.1%, sub-system efficiency of 91.82% and overall efficiency
of 5.14% were obtained, which are well comparable to the efficiencies reported elsewhere for similar
systems. The LCC analysis showed a 20 year average unit water cost of 0.25 US $/m3 for solar PV system
and 0.6 US $/m3 for diesel genset system. Solar PV system is found to be more cost effective and suitable
for use over conventional sources. | »