- asked:


I am going to build a house ‘on stilts’. I will have a composting toilet (doesn’t use water), and will hook up the clothes washing machine, and dishwasher to a septic tank. But I would like to capture the drain water from sinks and bathtub for watering garden and moistening compost heap. I will be using special soaps and soap replacements that make this feasible.

Ideally, I would route the drainwater from sinks and tub to a metal or plastic drum or inexpensive holding tank, which I can place on top of a 6 foot platform. That will place the tub a couple feet higher than the top of the holding tank . This way, I can use a large quantity of water in garden at one time, and being up on a platform will give it it’s own water pressure. (Not much pressure, but hopefully enough.)

My question is this: are there any metal or plastic drums which have properly sized/shaped and conveniently located openings for this purpose? If not, how about inexpensive holding tanks? And what’re they called?

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