Hang a right at the fork and go over the levee on East Martin Street in West Monroe, and what you find might surprise you. A large building sits on a rise, then the gravel drive loops around two giant ponds with outbuildings and aerators. Egrets dot the edges, and a family of ducks swims by. With a heat index over 100 degrees Fahrenheit, the breeze off the water is cool and inviting. You might be tempted to take a dip. Do not do that -- under any circumstances. The ponds smell deceptively, well, normal. But that's raw sewage.