First of all, many thanks for a great site which has saved me hours of work and worry I've searched the main site, and many of the previous postings, but can't seem to find an answer - so here goes ...
I'm landscaping the garden in my new house - not a big garden but a big job! Anyway, I'm connecting the surface water run-off from my patio to a handy inspection chamber in the garden (I've checked its SW only). I'm fairly confident with this bit. But I'd also like to connect the water that gathers behind a retaining wall into the same 'surface water' system. Is this allowable?
I understand that there may be issues with contaminants such as herbicides and fertilizers. I suppose the fact I dont use them won't help - I just want to do the right thing!
firstly Ian ,how do you know its surface water only??
what drew that conclucion?
secondly i wouldnt worry to much about putting the water that collects behind the retaining wall into it as long as you haven't been using agent orange or something
have a good look at the soakaway page on the main site for more info on this subject
cheers LLL
Thanks LLL, that helps. I'm pretty sure its a SW only chamber as a) the chamber right next to it is foul (I know this for sure) so I believe its a seperate system and b) the chamber only has 1 input pipe which is fed from the garage and house roof down pipes (I tested this with a hose pipe before the ban). You're right though, I suppose this input pipe could be fed with other sources too (I didnt dig up the whole pipe to inspect) but I assume its safe to conclude its SW only? Anyhow; I'll wrap the drainage in geomembrane to keep out all the silt and connect it up -- and be sure not to use anything dodgy in the soil! ... many thanks Ian
I've searched the main site, and many of the previous postings, but can't seem to find an answer - so here goes ...