Tiny House Ontario is in the process of installing a little place to wash up with our collected rain water.
The drainage is fantastic on the escarpment due to it being limestone bedrock with natural faults every few feet, so even when it is raining like crazy, for days, the ground is not wet. Thus a simple drain tube should do the trick. A sink and shower will be added… hopefully… on a raised platform. It depends on what the building inspector says about adding on to a non existent building/art project…
Here is the beginning.