[Tagging] key:drinking_water for OSM ways

[European Water Project]

And maybe it shouldn't be mapped that way because it is not observable.

Up for discussion...
Thanks,

Stuart

On Fri, Feb 21, 2020, 08:25 Warin <61sundowner at gmail.com> wrote:

> On 21/2/20 6:16 pm, European Water Project wrote:
>
> Hi Warin,
>
> contents=water seems more appropriate
>
> That does not stipulate if it is drinking water.
>
>
> Thanks,
>
> Stuart
>
> On Fri, 21 Feb 2020 at 07:38, Warin <61sundowner at gmail.com> wrote:
>
>> So a water tank with drinking water cannot be tagged as drinking water
>> because there is no local access. Fine.
>> Then it is only tagged as a tank with contents=water, or should there be
>> yet another value for it contents=drinking_water?
>> Or a sub tag water=drinking water...
>>
>>
>> On 21/2/20 5:10 pm, European Water Project wrote:
>>
>> Hi Martin,
>>
>> There are a couple of issues I see with drinking_water=yes not having a
>> concept of access.
>>
>> 1. Where is the observability  ? How can I know if a water tank has
>> drinking quality water or just agriculture quality water ?
>> From the wiki :
>> "One can assume that the water is pure when many people drink it every
>> day."
>> This is hard to assume, and one would never know if there is water ...
>>
>> 2.   But there is an even bigger issue --- and I will admit that I am
>> biased because of the European Water Project's use case.
>> For a map feature to be useful, it should have universality. Ie. if one
>> maps restaurants with toilets, at least customers should have access ...
>> Someone who goes to the OSM way where there is a water tank, even with a
>> wallet full of cash, will die of thirst before getting a drink.
>> It's similar to toilet=yes ...   A restaurant with a toilet for employees
>> only, probably shouldn't have the tag.
>> Yes, there is an access tag, but in most cases access is implied.
>>
>> drinking_water = yes, seems to come with access in 99% of the 61,300
>> nodes and the large majority of the 8,178 ways.
>>
>> Best regards,
>>
>> Stuart
>>
>>
>>
>>
>>
>>
>> On Thu, 20 Feb 2020 at 19:33, Martin Koppenhoefer <dieterdreist at gmail.com>
>> wrote:
>>
>>> Am Do., 20. Feb. 2020 um 19:14 Uhr schrieb European Water Project <
>>> europeanwaterproject at gmail.com>:
>>>
>>>> Dear All,
>>>>
>>>> I have noticed that the the key drinking_water = yes for ways is
>>>> sometimes used in a manner not described in the wiki.
>>>>
>>>> https://wiki.openstreetmap.org/wiki/Key%3Adrinking_water
>>>>
>>>> The issue has to do with ways which might store drinking water which is
>>>> not actually directly accessible.  I think this tag should be for
>>>> accessible water.
>>>>
>>>
>>>
>>> I don't read from the wiki description that the drinking water must be
>>> directly accessible. It depends on the context feature.
>>>
>>> Cheers
>>> Martin
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