Is there no problem dumping grey water on the ground in campgrounds? My grey water doesn't have food particles or grease. It's only hand soap, or dishwashing soap.
Wife and I used to do a lot of tent camping.. Most of the time there was nor problem. We did come across some sites that smelled to high heaven from the grey water dumped at the site.. For example, after some cooked bacon eggs for breakfast, they should have at least carried the grey water some distance into the woods away from the site before dumping.. water from boiled vegetables wouldn't have been nearly be so bad.