Does anyone have any experience with a subdivision that has a low pressure sewer system that relies on individual grinder pumps in the houses rather than a lift station?
We have a subdivision that was set up like this, and it was predicated on using Orenco treatment systems which discharge only gray water. Since that time we had two builders use grinder pumps and the developer now says these are ok. I have serious concerns about such a system generating sufficient pressure to push the flow up a 25’ incline over several hundred feet unless all the houses came on line at once. Let alone knowing if grinder pumps are acceptable. I put a moratorium on those and now all permits will go out with the specs for the Orenco System. The “mains” are only 2” and the stub lines are 1”. Doesn’t that almost force the discharge to be limited to water?