Globally, clean water has become a scarce resource. More than 2 billion people live in countries experiencing high water stress today, and by 2030 up to 700 million people could be displaced because of severe water scarcity. 

Luckily, new effective water management strategies can increase the accessibility to good quality water. Managed Aquifer Recharge (MAR) is a technology to replenish ground water reservoirs by directly refilling the reservoirs with reclaimed water. 

There are however questions concerning the risks with reuse of water. Will MAR-produced groundwater be safe to human health and to the environment? Both pathogens and different chemical compounds need to be attenuated via a combination of biotic and abiotic processes. 

In the project MARadentro we will develop a type of soil filter to mimic the natural way groundwater is formed. In the soil, pollutants and pathogens are retained, either degraded by soil microorganisms or trapped and inactivated by physical processes. MARadentro will combine hydrogeology, geochemistry, microbiology and modelling to address the risks with reuse of water and at the same time gather knowledge to establish recommendations to stakeholders and authorities. 

Treated wastewater in a waste water treatment plant.