It's all the freshwater world.
The other thing is that as climate change is changing the hydrologic balance in so many different aspects of our system, the stream flow that we depend on for assimilating waste going into rivers and streams is more variable now. We don't quite understand what happens at different times. Different seasonalities are causing this type of uncertainty.
As we move forward, taking into account how stream flow will be impacted by climate change and how we use it as an assimilating component is something we need to keep in mind.