[Tagging] Feature Proposal - RFC - Water tap

Kotya Karapetyan kotya.lists at gmail.com
Thu Nov 13 08:39:53 UTC 2014

Mateusz, I agree. A mapper should never introduce, even by implication,
information he doesn't possess. "This water is non-potable" is very
different from "I am not sure you can drink it". This is why I tend to go
for a generic "water source" tag with an additional potability

Taking into account everything said, I would propose:
1) To introduce a key "water_source".
2) The values will be: potable, nonpotable, yes (or is "potability_unknown"
3) Deprecate "amenity=drinking_water" in favour of "water_source=potable"
4) All other related tags remain as is:
and define the type of water source with more detail.
5) Man_made=water_tap can still be introduced, to accompany
man_made=water_well. However, the main purpose of this proposal is served
by the most general water_source tag.

I do understand that this goes somewhat out of the existing scheme. However:
- Can you propose a better solution, not just criticise the proposal
(criticism is very welcome, but please try to bring the discussion closer
to the agreement)?
- I think that the existing situation with the top-level
"amenity=drinking_water" is a rather poor solution, even if widely used.
Once again, please take into account that OSM was originally introduced in
developed countries, thus the established tagging system comes from their
realities. OSM is now gaining popularity in developing countries, and the
tagging system is bound to be dynamic if we don't want to end up with a
very low quality map (with either non-tagged features or with dozens of
custom or wrong tags). Also keep in mind that mappers from developing
countries are not extremely likely to participate in this English-language

Finally, I would advocate the start of discussion to standardize the
tagging system, make it more uniform and thus mapper- and
consumer-friendly. Just keep it in mind please when considering this
specific proposal.


On Thu, Nov 13, 2014 at 8:33 AM, Mateusz Konieczny <matkoniecz at gmail.com>

> "If you can only chose between potable and non-potable" - in this case
> tagging scheme is bad and should be changed to default to unknown value.
> 2014-11-12 23:44 GMT+01:00 Warin <61sundowner at gmail.com>:
>>  On 12/11/2014 8:34 PM, tagging-request at openstreetmap.org wrote:
>> Message: 5
>> Date: Wed, 12 Nov 2014 09:06:15 +0100
>> From: Pieren <pieren3 at gmail.com> <pieren3 at gmail.com>
>> To: "Tag discussion, strategy and related tools"
>> 	<tagging at openstreetmap.org> <tagging at openstreetmap.org>
>> Subject: Re: [Tagging] Tagging Digest, Vol 62, Issue 31
>> Message-ID:
>> 	<CAPT3zJr3gsQAFYxeWXvnuYc2n_7tR-Git3JpuortmAUf2a18Kg at mail.gmail.com> <CAPT3zJr3gsQAFYxeWXvnuYc2n_7tR-Git3JpuortmAUf2a18Kg at mail.gmail.com>
>> Content-Type: text/plain; charset=UTF-8
>> On Wed, Nov 12, 2014 at 8:50 AM, Mateusz Konieczny <matkoniecz at gmail.com> <matkoniecz at gmail.com> wrote:
>>  > No, unknown should be tagged as unknown. Even better - not tagged.
>>  +1 We don't tag what is unknown. Pierre
>> 'We' know there is water there. That water can be used.
>> If you can only chose between potable and non-potable, then you should
>> chose non-potable. Filtering and treating non-potable water makes it
>> potable .. I do this when in remote areas for my safety, particularly if
>> I'm uncertain of the quality of the water. In some cases acess to water can
>> be a life saver - thus it should be mapped no matter what the quality.
>> =================
>> Note change in Subject title - my appoliges for my error there.
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