If drainage is good what does soapy water on the ground hurt. Of course if there were five a day I get it. No food in it. Tent Campers wash dishes outside and dump the water
Because people do it doesn't mean it's legal. If it's not black water, it's usually considered grey water and isn't to be dumped on the ground.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10