Ask the flist: Greywater DIY?

[andygates]

Has anyone got any wisdom to offer with regard to installing a small domestic greywater system?

With the walls off my bathroom, I can see almost all the pipework.  There's plenty of space back there.  I'd quite like to intercept the sink waste and use it for toilet flushing.  The pump and overflows I can probably manage.  How about treatment? 

Comments

[ravenbait.livejournal.com]

Just for the record, you'd need to deal with a certain amount of contaminants to put it back in the cistern because some bacterial components will multiply to the point of significance just while you're at work. Most systems use a biological filter and that's very salt sensitive.

Are you in a rush or can you give me time to calculate? I might have a few more questions for you if the latter.

[andygates.livejournal.com]

No rush. But to be clear, I'm only thinking of using the waste water for flushing so it would go into the sewage. The garden's well provided for from my rain water butt ;)

Heh, I said "butt".

[gedhrel.livejournal.com]

Could you do the calculations in public? I'm curious to know what you're working out. We're looking to sort out the bathroom this year - as Andy says, it's a source of lots of grey water. Cheers,