Dr. Elaine McGoff:

Again, I am going to sound like a broken record here. It is a matter of coming back to the science. Look at the EPA science as to where the biggest pressure is, and it is agriculture. Urban wastewater, for example, does not get a free pass, but five times more water bodies are impacted by agriculture than urban wastewater. That does not mean urban wastewater gets off scot-free. Everybody has to pull their weight but, logically, if you want to improve water quality, you have to look at what the biggest pressure is and prioritise that while working on all the other pressures at the same time.