Green means:
Buy new within developed areas or in developing hinterlands? Cost tradeoffs include at least these:
Stay close, travel less. Transportation swallows life. It burns
carbon and costs time, money, and stress. Less is more.
Shower water re-use is the best we can get because shower water
outflows occur year round, daily, in all seasons, and that
matches the requirements for toilet water supply which is also
daily. The win is reduced because toilets are low-flow nowadays;
in the old days of 3.5gpf toilets you could reduce total usage by
a lot more than today with 1.28gpf toilets. Another reason it
might not be such a win is that gray water used in toilets tends
to discolor the toilet tank and bowl over time. Still, it's a
better idea than rainwater capture for residential applications.
I do think rainwater capture is a great idea, only at a much
(Much) different scale. (My suggestion here.)
Save Water
Shower Water Capture and Re-Use
What makes more sense is shower water capture and re-use. A
system should provide for
Modified: May 23, 2007; February 8, 2022