Borehole Yield Testing
A borehole yield test aims to determine the maximum amount of water that can be pumped from the borehole and the amount of water that will be returned to the borehole from the surrounding groundwater source. Crysbol Consulting provides borehole yield testing services using an in-house borehole test rig that performs the work in accordance with the South African National Standard for Water Borehole Test Pumping (SANS 10299-4:2003). Our company is registered with the Borehole Water Association of Southern Africa and issues a borehole yield certificate upon completion of each borehole test.
The pumping test procedure comprised of calibration tests, step draw-down and constant discharge tests, including water level recovery measurements after each test.
Three to four step draw-down tests at increasing sequential pumping rates is conducted, each of 60 minutes’ duration. Constant discharge rate tests of 24 hours is conducted on the borehole with recovery measurements.
A groundwater sample is collected during the constant rate pumping phase. The samples is analysed for microbiology, inorganic and organic chemistry to determine the suitably of the groundwater for drinking and domestic use in line with the requirements of the South African National Standards (SANS) (2006).
The following are some of the completed borehole yield projects
Borehole Yield Test_24hrs_ Tshikambe Primary School, Vhembe district, Limpopo province.
A 24hrs borehole yield testing was performed at Tshikambe Primary School
Date Completed: March 2023.
Borehole Yield Test_24hrs_ Tjhidelani Primary School, under Thembisile Hani local
Municipality in Mpumalanga province.
A 24hrs borehole yield testing was performed at Tjhidelani Primary School.
Date Completed: March 2023.
Borehole Yield Test_24hrs_ Moshongo Village, Capricorn, Limpopo province
A 24hrs borehole yield testing was performed at Moshongo Village.
Dated: February 2023
Borehole Yield Test_24hrs_ Mantsha primary school, Capricorn, Limpopo province.
A 24hrs borehole yield testing was performed at Mantsha primary school.
Date completed: February 2023.
