[Greenbuilding] Living with a rainwater cistern(was Re:hotwater)

[Nick Pyner]

Re: [Greenbuilding] Living with a rainwater cistern (was Re:hotwater)The
regularity of the rainfall is usually a bigger issue than the quantity and
the break point is determined by the degree oif dependence rather than mere
disire. The roof area is a big player.

1 mm rain on 1 sq.m. of roof = 1 litre in the tank. And you work on from
there. The tank I alluded to may never get filled, but there was no point
making it smaller.

I submit that rainwater is a bit too precious to use on the garden unless
you have plenty of it, and investing in collection for that purpose isn't
such a good idea. You might consider using grey water instead, you usually
have plenty of that.

Nick Pyner

Dee Why   NSW
  -----Original Message-----
  From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org]On Behalf Of Kathy
Cochran
  Sent: Friday, 11 February 2011 12:17 PM
  To: stubby at citilogs.com; 'Green Building'
  Subject: Re: [Greenbuilding] Living with a rainwater cistern(was
Re:hotwater)


  I would imagine that there is a break-point in average rainfall where
collecting rain off the roof is practical for the collection of water use to
supply a household, and one that grows a vegetable garden to support that
household.  What would be the suggested annual rainfall to make a system
like this practical?



  Thanks in advance,



  Kathy Cochran

  San Andreas, CA  95249



  PS  Since I have lived here (10 years) I have seen a variance from 19
inches all the way up to 46 inches.  Average is considered to be around 30".

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