Written by Shane Teek – GEOSS South Africa (Pty) Ltd (14 December 2022) There are many fields of Earth Science, and many of these fields overlap with engineering problems. Examples of such scenarios include the geotechnical design of structures, the development of groundwater supply, or the characterisation of contaminants and the development of a remedial […]
Posted on 14 January 2023
Written by Kes Murray Many boreholes get over-pumped, leading to pump failure/burnout, borehole clogging, impacts on other groundwater users and spring flows, and even land subsidence. While this is usually only discussed when a neighbouring land owner drills new boreholes or when large infrastructure investments are lost due to yield drops after 2 months […]
Posted on 29 September 2022
Written by Shane Teek & Dr Charles MacRobert A tailings storage facility (TSF) at Jagersfontein failed between approximately 6 AM on Sunday 11 September 2022 causing an environmental catastrophe that is still unfolding. The dam burst, flooding the town and causing families to lose their homes, numerous hospitalisations and significant loss of life. Images […]
Posted on 23 September 2022
Written by Reuben Lazarus With the threat of Day zero still looming in parts of South Africa, the question of getting a borehole in your backyard is still on the mind of many concerned citizen wanting to secure their water supply. Whether this is for drinking water, filling up swimming pools or garden irrigation, […]
Posted on 29 July 2022
Understanding the National Water Act: Section 27 In this article, we are going to explain the process of getting a Water Use Licence (WULA) in accordance with the National Water Act and why section 27 (motivation) is important. Once a borehole has been sited and drilled, yield and quality testing been completed and the WULA […]
Posted on 29 June 2022
Groundwater, aquifers and boreholes This article first appeared in Fresh Quarterly. The Water and irrigation issue 16: 2020 – 03. Written by Anna Mouton What do half the people and half the crops on earth have in common? Their survival depends on groundwater. Only about 2.5% of all water on earth is fresh. […]
Posted on 1 June 2022
My research on borehole drilling, good borehole construction and well efficiency After attending the 2020 workshop “Groundwater: Setting the standards – Borehole Drilling; Pumping Tests and Monitoring”, hosted by The International Association of Hydrogeologists (IAH) South Africa held November 2020 – I started my own research on borehole well efficiency and clogging. This was as […]
Posted on 15 May 2022
By Kes Murray Attending the 11th International Symposium on Managed Aquifer Recharge (ISMAR 11) in California, USA, 2022: A Hydro geologists perspective In April 2022, I had the pleasure of making the trip over to the United States of America to attend and present at ISMAR 11 in Long Beach, California. The International Symposium on […]
Posted on 15 May 2022
Written by: Julian Conrad A question many people ask is where do small towns get their water supply from? Today we will answer that question through the case study of one of our latest projects, a town that battled drought for many years. Merweville is a special and charming little town (see Figure 1) located […]
Posted on 3 March 2022
Previously we have written about groundwater impact assessments contaminated land and discussed how humans have created contamination that occurs in the past, present and future. Read the article here Movies that depict famous groundwater contamination cases In this article, we will delve a bit deeper into water contamination that has occurred in the past. Due […]
Posted on 22 February 2022
The intention is to provide a broad overview of groundwater resources in terms of how it occurs (its distribution across South Africa)
as well as an overview of the complete “life cycle” of groundwater development projects (starting with drilling and on through yield testing; monitoring and all the way to the authorization of the use of groundwater).
Posted on 16 February 2022
Usually, the preparations made for groundwater exploration, drilling, and testing the yield and quality of boreholes culminates in the registration or authorisation of the use of new groundwater. While Section 21 of the National Water Act No. 36 of 1998 guides the groundwater user in terms of the authorization process, there are various aspects that should be taken into consideration.
Posted on 3 October 2021
South Africa (SA) is a water scarce country that is characterised by extreme climatic conditions and evaporation rates that often exceed precipitation. The country is projected to have a 17% water supply deficit by 2030 (DWS, 2019). This can be mitigated by increasing water efficiency and diversifying water sources. By 2040, alternative sources such as […]
Posted on 23 September 2021
Written by Dale Barrow Drilling and having a borehole is an asset that should last you at least 10 to 15 years at very little ongoing cost, provided you do everything correctly at the start! If you don’t, it can become a very expensive and time-consuming liability with continual repair or replacement of pumps. The […]
Posted on 13 September 2021
Recognition of groundwater’s contribution to water supply, including garden irrigation, crop irrigation, stock watering, potable and town supply, is ever increasing. This is driven by inconsistent rainfall patterns, climate change and an increase in water demand. With drill rigs of all shapes and sizes running around between drill sites, it is appropriate that we spend some time outlining some important aspects regarding a successful borehole – it goes beyond just selecting the correct drill site!
Posted on 11 September 2021
By Kes Murray Understanding Groundwater recharging Managed Aquifer Recharge (MAR), sometimes referred to as Artificial Recharge, is the process by which a water source is intentionally injected or infiltrated into an aquifer. There are a wide variety of reasons for doing this, as well as a range of methods and technologies that are used to […]
Posted on 8 February 2021
How to correctly follow a borehole yield test? The South African National Standard for the test pumping of water boreholes (SANS 10299-4:2003) clearly prescribes how the borehole yield testing is to be carried out. Remember the Department of Water and Sanitation (DWS) will only authorise groundwater use if the correct (above) method of borehole yield […]
Posted on 24 October 2020
The land we live, work and walk on is the only one we have and therefore contamination from human activity and industrialisation is a real issue strongly linked to our common past, present and future. It is important to remember that contamination is something that has occurred in the past, is occurring in the present and it will occur in the future. It is therefore crucial that these concerns are addressed.
Posted on 13 October 2020
Just 200 km north of Cape Town, South Africa, you’ll find a unique area that boasts a wide range of landscapes – from rugged mountains to lush river valleys.
Posted on 9 April 2020
Groundwater supply project lifecycle
Posted on 25 September 2019
The Malmesbury Group has often been overlooked as a useable source of groundwater. This is due to its previously generalised low yields and relatively higher salinities of groundwater found in these weathered to fresh sedimentary and metasedimentary rocks.
Posted on 1 September 2019