so a lichfield?
I have no idea what one of those is, but it's not like a big poo field or anything. LOL. There is a 3-compartment septic tank that gets buried way under ground. Basically everything goes through the septic tank, solids stay in one compartment....I don't really know the gory details but I know everything gets filtered and treated and that soundmound is basically a drain field that only liquids go to, and I think they go into the bottom of it and get dispersed underground for the most part. I know it's made of tons and tons of "sand" which actually looks like teeny tiny pebbles. And then you have to have someone come pump out your septic tank every 5-10 years depending on the size of your household.