MARSA develops technologies that allow for more water to be safely recharged into aquifers as a tool to combat water scarcity

News

ICCE 2023 VENICE

21. February 2024

MARSA 12th Project meeting in Cape Town

21. February 2024

MARSA presented at the Groundwater Conference & Exhibition

18. October 2021

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Welcome to MARSA

Managed aquifer recharge (MAR), the purposeful recharge of water to aquifers for subsequent recovery, is used globally to replenish over-exploited groundwater resources and to prevent saltwater intrusion. Due to increased water shortage worldwide, there is a growing interest to use unconventional water resources for MAR such as reclaimed water or surface water impaired by wastewater discharges.

The outcome of MARSA will be an extensive capacity building on MAR in South Africa, including:

The setup of feasibility studies assessing potentials for MAR at a given location and determination of actions to be taken to improve attenuation of organic pollutants, pathogens, and antibiotic resistance.
Field-scale demonstration of MARSA technologies to improve pollutant attenuation.
A model for the development of groundwater use in South Africa considering an increased range of water qualities that can be recirculated via MAR after implementation of MARSA technologies.

Field sites

Atlantis aquifer field site

One of thw two field sites of the project is the The Atlantis site, which has been in operation for over 40 years using an inlet of a mixture of reclaimed- and storm water infiltrated via infiltration ponds.

Langebaan road aquifer

At present MAR is not applied at the Langebaan road aquifer site, but infrastructure exists, for infiltration of nearby Berg River water, either by direct well injection or pond infiltration. As the salinity varies along the river, it is most suitable for studying at what concentrations saline water can be used directly for MAR or where a pretreatment is required.

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