Below is an excerpt copied and pasted from the history of llandeilo. I have to say that upon looking at the pump it appears to have been replaced recently and now it is no longer possible to extract water sadly.
'Last, but not least, the most essential need of the village, was the village pump. This has remained at Ffairfach for centuries to remind us of its past glories and the service it has rendered to its people. It was around this pump that the women of Ffairfach had their daily bits of news. It was a meeting place for "y chwiorydd." Today we have our W.V.S. and W.I., but not so in the days of old. This was the women folk's only recreation - a visit to the village pump for water. Incidentally water is available from that old pump today, some people go there for a jug-full of pure crystal-clear water with which their ancestors quenched their thirsts.'
If you wish to read more about the history of this fascinating little village please follow this link - http://www.llandeilo.org/good_old_days.php