LRROWE - No, we have never gotten any flack, just questions from other campers. It usually goes like this: "You dump that shower onto the ground?" "Yes, but it goes through a three-stage, World Health Organization designed sand/charcoal/gravel filter that you can DRINK afterwards". Then, I will let them smell where the water goes onto the ground (remember, it is trickling onto the ground, maybe 5 gallons in 45 mins)...they see you cannot smell ANYTHING and that it is basically water (I mean, I wouldn't drink it mind you!).
I have told the ranger's about it and they were fascinated by it...during the trip to Myrtle Beach this month, I put leaves over the hose so that the water wouldn't spread on the ground, but it didn't need it. Of course, you CAN smell the water as it sits in the reservoir (where it's pumped from the shower basin), but that only proves how good the filter works.
The hole in the top bucket (where the water is filled to drain down into the filter), has a single penny-nail size hole in the bottom. A standard sink drain screen from Walmart is glued over it, to catch any particulates that could clog the hole. If you held the bucket up, you would see a tiny little stream coming out.
Like I said, we dumped at least 70 gallons of grey water over the course of 5 days and when we left you would never have known it, other than there was a damp spot where it was filtered out...
The only disadvantage is the weight of the filter, but to me, the ability to shower ANY where far outweighs that. Especially when it was high 90's with 98% humidity during the day, just going into the pubic restroom to do #1 was yucky...I can't imagine taking a shower in there, then trying to dry off and get dressed...our setup, you take a shower (as long as you want, assuming you don't fill up 14 gallons), then towel off (remember, I have a exhaust fan in the shower), and step right into the A/C GNAT to get dressed - really nice!
Any way, here is the reference to the sand filter
http://fivegallonideas.com/wp-content/uploads/2012/05/bucket-filter.pdf and how it is made...for mine, I put a 5/8 hose adapter into the bucket, with a quick disconnect to attach a hose when we get on site, and the water percolates out away from the popup tent...
If it helps one person get a "significant other" to go camping because they can have full use of water on a site without sewer hook-ups, I feel I did a good thing!