Go glocal and link responsibility with impact
This is fairly simple. Our future institutions should be designed to be appropriate to the scale of the problem, the principle of subsidiarity, to find the right solution.
This means cleaning a lake from waste is more easily managed by the municipality than an international organization and handling climate change which has global implication could hardly be effectively dealt with by a municipality.
Related to this is linking responsibility with impact, recognized in the principle of polluter pays. Polluter pays is a good start but as money cannot compensate for the environmental destruction and charging environmental fees to internalize what economic models called externalities would in reality shut the whole economic system down.
Furthermore calculating these externalities, which are only external with narrow boundaries of economic models, and their cost for humanity is a mirage. What’s cost of the human suffering of the effects from climate change?
Instead let us begin redesigning our economy into different spheres where the reach of our responsibility coincides with our impact and an economy where the resources needed for a Cadillac are not competing with resources needed for a plow. Before we are there we can start designing in intrinsic responsibility in the current system.
Let us follow Meadows suggestion
“requiring all towns or companies that emit wastewater into a stream to place their intake pipes downstream from their outflow pipe”