RWSN Publications - maintenant sur Practical Answers
To help rural water professionals get access to the inform they need, RWSN has teamed up with Practical Action to make some of our leading publications available on the Practical Answers website and mobile App.
Let is know if there are any particular resources or publications that you would like to have on this platform.
Pour aider les professionnels de l’eau en milieu rural à accéder aux informations dont ils ont besoin, le RWSN s’est associé à Practical Action pour rendre certaines de nos principales publications disponibles sur le site Web de Practical Answers et l’application mobile.
Indiquez s'il existe des ressources ou des publications particulières que vous aimeriez avoir sur cette plate-forme.
UNICEF, Skat Foundation
Building and supporting local enterprises to develop markets and undertake manual drilling in a professional manner.
Year of Publishing
Borehole Costing Model v2.8: Quick Start Guide
pdf • Size: 0.07 MB
A Guide for Supervisors and Project Managers
The high rate of non-functional boreholes in many parts of the world is attributable, in part, to a lack of professionalism in the drilling sector. In order to increase access to a safe and sustainable water supply, competent and experienced drilling contractors must be engaged. Likewise, suitable equipment is needed and experienced consultants are required to supervise construction.
This guidance note assists project managers involved in the provision of groundwater supplies using boreholes. It sets out procurement and contract management procedures that will lead to the engagement of professional groundwater consultants, drilling contractors and suppliers. The publication will enable clients to ensure that they have the know-how to get the expected results out of drilling contracts.
This Borehole Costing Model is a spreadsheet in Microsoft Excel 2003
Once set up the model can quickly calculate the actual cost of a borehole (not the price). The first time the model is used it requires the unit costs to be entered for different materials and rigs. The model was built by Tom Heath, Richard Carter and Kerstin Danert. The model consists of three components: Model Unit Costs, Borehole Specifications and Results.
RWSN Publication 2014-12
This field note is written for water well drilling enterprises as well as other agencies which manage, or are involved in drilling projects. Using a step-by-step approach it gives clear guidance on how to cost and price the construction of drilled water wells. It also provides tips on business management with an emphasis of the realities faced in many countries in sub-Saharan Africa. Once you are familiar with this field note, you will be in a much stronger position to calculate drilling costs, consider prices and deal with business realities.
Manuals on Drinking Water Supply. Volume 6:
This manual explains in practical terms the basic drilling techniques. It describes the use of fluid circulation in soft ground formations, and compressed air and hammers for hard rock. It discusses
well design, types of pump and their installation, screen selection, and testing.
Working Paper 2 on Water Supply and Environmental Sanitation
This booklet seeks to suggest ways in which funds can be better used for making safe water available to the poor by illustrating how drilling costs can be reduced without compromising water quality, water quantity, or the productive life of the borehole. These arguments are directed towards the rural water supply sector as a whole. Those directly addressed are primarily decision makers, government civil servants, planners and implementers of water projects who are not experts in drilling, as well as technical people, project leaders, technical aid personnel etc. This publication is neither a detailed drilling manual nor a methodology of drilling methods.
The author draws on his extensive experience as a member of the UNICEF Water and Environmental Sanitation community. He hopes that his views and proposals will be a catalyst for change, and that this contribution will stimulate interest in experimenting with ideas on low cost drilling of boreholes for handpumps.