Borehole Water Supply: Installation and Maintenance

Programme Introduction

The course provides you with:

• an introduction to a variety of types of boreholes and wells, their use, design, and operation.
• a practical introduction to the main methods of drilling and borehole investigation techniques used to assess aquifer and well properties in the context of developing successful water supply boreholes.
• an introduction to methods of optimising borehole design, including selection of appropriate technology and types of pumps, well and aquifer development, and test pumping.
• an awareness of the need for long term maintenance and rehabilitation of water supply boreholes, and details of appropriate methods.

Programme Objectives

By the end of the course, you'll have an understanding of:

• the types and uses of boreholes and wells
• drilling and borehole investigation techniques
• the principles of optimal borehole design
• an awareness of the need for, and methods used in, long-term borehole maintenance

Programme Outline

• Background to groundwater investigation and development, sustainable yield.
• Types of boreholes and their uses, appropriate technology, water supply wells, boreholes for sampling and monitoring.
• Borehole site location selection.
• Drilling methods.
• Borehole investigations, wireline geophysics, lithological analysis and sampling of cuttings.
• Well design principles and practice, open holes, casing, screens, gravel packs.
• Drilling processes, cementing, centralisers, verticality of wells.
• Optimal design.
• Aquifer and well development.
• Pump selection for different purposes.
• Test pumping for sustainable yield / deployable output, aquifer properties (step and constant rate tests).
• Well maintenance and rehabilitation.
• Well design and operation for monitoring and water quality sampling.
• Current Issues in Water Treatment.
• Disinfection Technologies