That's a good point. How much does it cost to maintain a water system vs. protect it? What value do we put on lost recreational activities when evaluating these costs? Who has commissioned this study, and what was the outcome?

From what I can gather, the preferred method is to, "install feed lines for chlorine or potassium permanganate, which kill larvae and settling adult mussels". I wonder what that costs? Is it the type of thing that will (or already has) become cheaper as more lakes have installed them on the east coast?

I wonder.