I would be curious as to what is underground,,, a catch basin and weeping tile?
here we courteously let it out (at not much more than a drip) into the surrounding greenery off the edge of the site providing its not near a lake or river, especially when on rock, and not flowing into a neighbor's site, at a drip rate it will barely make a wet spot more than a few square inches in most good soil conditions, anyplace around here that restricts it will have it posted or in the rules. I have come across a couple conservation areas that the sites near creeks have a underground pipe system that takes your grey water (only) away from the creek to a weeping bed
