Sanctions that charge per ton of plastic discharged This means that the owner of the river either 1) Stops plastic entering the river 2) Charges for plastic e

Sanctions that charge per ton of plastic discharged This means that the owner of the river either 1) Stops plastic entering the river 2) Charges for plastic entering it - passed on to the developed world through higher costs 3) Filters at the mouth of the river Egypt can invite international organisations to measure the plastic entering the Nile at Aswan and leaving post Cairo. Sudan can do the same with the borders with South Sudan and Ethiopia (from memory), and so on. How much would it cost to filter the discharge of these rivers to withdraw even just half the plastic? Is it even possible?