My friend has the Sig 226 blackwater edition and I think that would make a nice gun.

Infected or (black) water combined with time and high temps brings about a contamination issue. 

Other example company blunders like BlackWater come to mind....

Or like trying to get Republicans to give more "corporate welfare" to the corporate keepers; Halliburton, Blackwater, Exxon/Mobil?

Have you been brainwashed into believing that if the U.S. doesn't spend over a trillion dollars per year on Haliburton, Black Water, invading countries that don't pose direct threats to our nation, etc, that the terrorists are going to destroy us?

Another trick I learned was to run a black water hose back and forth across the roof.

A small pump located just behind the toilets pumps all black water and/or grey water from sinks and tubs into a storage tank within a room of 8 X 10 where the incinerator is located as well.

I ask because with an RV, you will have limitations of black water and grey water capacity that it can hold (how much you can shower etc. is limited before tanks are full).

Also,  in an existing building seperating grey and blackwater would be prohibitively costly at best. 

So its Black water , you dont have different pipes for grey and black , they all go to the septic tank .