[Tagging] RFD pipeline sub tag substance

[SomeoneElse]

On 28/01/2015 11:43, Martin Koppenhoefer wrote:
>
> 2015-01-28 8:48 GMT+01:00 Warin <61sundowner at gmail.com 
> <mailto:61sundowner at gmail.com>>:
>
>     Unfortunately this does not have a tag for non drinking water ..
>     possible values could be
>
>     non-potable_water
>
>     grey_water
>
>
>
> I like grey_water
>
>
"grey water" has a specific meaning (waste water that isn't sewage and 
can be further used for e.g. irrigation).  If that's what you mean - 
great.  If you just mean water that you can't drink, then just use 
something that describes it, like "water".

Although http://wiki.openstreetmap.org/wiki/Key:substance says "water == 
fresh water for drinking purposes" that doesn't match the real world.  
Mappers adding e.g. irrigation pipes aren't going to check the wiki; 
they'll just say "that's a water pipe", so data consumers can't assume 
that "substance=water" == "fresh water for drinking purposes".

Cheers,

Andy



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