That term ‘sewage treatment’ covers everything we need to know, doesn’t it? Maybe not.
A lot of what is in sewage can be harmful to marine life if there is enough of it. But here’s the catch: that stuff (like pharmaceuticals and synthetic hormones a.k.a. birth control pills) is not removed by the kind of secondary treatment we now have.
The other stuff (like poop) is readily removed out there in Juan de Fuca, at no charge. That has been said a hundred times and it is undoubtedly true.
So why spend money for a system that cannot remove the harmful stuff? Is this rational?