[p2p-research] land multipliers

[Ryan Lanham]

Hi Chris,

I'm just mentally noting that cities clean water locally.  Why?  If water is
better to clean locally, what economics make it so versus food?  Land and
NIMBY are always cheaper in rural locals.  Thus, why is water a special case
of urban processing in most cities?

Ryan

On Fri, Jun 18, 2010 at 2:34 PM, Chris Watkins <chriswaterguy at appropedia.org
> wrote:

> Ryan,
>
> I'm not clear what you're asking here:
>
>
>  I wonder why it is cheaper to process water in cities than to pipe it
>> out?
>>
>> I mean, what's the difference between water and food?  Water is cheaper
>> per unit weight, but it easier to transport.  Why not purify water far away
>> and train it in to cities?  Perhaps it is because sewage would need to be
>> trained out.
>>
>>
>
> On the subpoint of using trains, I assume that piping is much more
> efficient and reliable - and of course that option isn't available for food.
> (Even if we could justify an apple juice pipeline, the quality would suffer
> due to heat and contamination.).
>
>
> --
> Chris Watkins
>
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-- 
Ryan Lanham
rlanham1963 at gmail.com
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