Looks like my supposition was off base. There are hundreds of cabins on the lake with a drum for a septic tank and then the "field line" is a pipe run into the lake. Looks like the health department is starting their crusade to clean up the mess. And we think our lke is soooo clean. Have you ever noticed the many trailers off the lake are parked next to a creek or stream.....it's not for the view.