My error on the 'cistern'.. or rather limiting the application. I'm thinking of the 'ballcock' ... not a plumber.

On 1/02/2015 8:33 PM, Volker Schmidt wrote:
The Wikipedia defintion of "cistern" is much wider than the toilet cistern: http://en.wikipedia.org/wiki/Cistern




On 1 February 2015 at 10:21, Warin <61sundow...@gmail.com <mailto:61sundow...@gmail.com>> wrote:

    On 31/01/2015 10:49 AM, S Volk wrote:

    Hi,
    I've been mapping on Africa in HOT tasks and around, I've seen
    some cisterns, also know that some humanitarian NGOs have made
    many cisterns  on Africa (also water_wells).

    Question:
    How to tag a cistern (it seems to be not like what is shown for
    "landuse=reservoir"; rather a small "man made" reservoir, on
    ground level or escavated, for either natural or treated water)?

    Or, in addition, since there are tags for "man_made=water_well,
    "man_made=water_tower", wouldn't it be worth to have a tag like
    "man_made=cistern"?

    Thank you in advance, regards,
    Sérgio (user:SergioAJV)
    svo...@hotmail.com <mailto:svo...@hotmail.com>



    A 'cistern' has a mechanism for keeping a water level stable,
    commonly used in toilets. And OSM has no tag for that feature
    (yet). They are connected to a water supply with some pressure
    behind it.

     I'd think you want to map the provision of water?
    If it is 'drinkable' then the generic amenity=drinking_water would
    suit?
    If non potable then amenity=watering_place ?

    If you don't know if it is drinkable then assume not, so use
    amenity=watering_place ? Maybe add a note ?





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