Uses for Waste Water
As tin-tin commented in my previous post , waste water can be reused for other pruposes. While I would not advocate reusing toilet water to water your garden or lawn (unless it is going into a septic tank - in which case, you are already reusing your waste water). You can certainly reuse dirty dish and bath water. Granted, the convenience of scooping the water out the sink, into a bucket and carrying out to your garden may be a bit much. However, here are two ways waste bath and sink water can be reused, rather economically, if only they would build houses this way: (1) irrigating lawns and gardens. It would be a fairly simple matter to have option of redirecting the water into the drainage tiles (like a septic tank) under your lawn. I envision the drainage for the bath and sink would be switchable between sewer and irrigation. Alternatively, it could be fed out to a cistern, though I am not sure I would want standing dirty water :P (2) waste heat could be reclaimed from the water (m...