In the commentary I explored options to achieve water quality goals referring to “end-of-pipe” solutions. I have received a number of comments and questions about this. In some cases, it was assumed I was referring to treatment on every field or property. To clarify, I was referring to treatment of non point source runoff as collected naturally (by streams) or artificially (ditches, pipes) at points well downstream from the original sources and near discharge points to receiving waters. Some also misunderstood “pipe” to refer to a point source. It actually refers to the end of some collection system receiving runoff (or non point source) pollution.

It was also suggest to let the buffer program work. I am still looking for evidence (based on objective assessments) that buffers will remove nutrients sufficiently to make a substantial difference in MN’s impaired waters.