The Borngasse It has been shaped by generations of wells, to which it owes its name [„Born” Middle High German for “source”]. Upwardly along the Oberstraße is a prolific well, the Hambrunnen. This well, which is significant for supplying water to the city, is already mentioned in medieval sources. The water from its overflow was originally drained through this alley in an open ditch. Downwards, the water then fed the Grünewald Fountain, which still exists today in front of the road junction in Heerstraße.
As early as 1680, the water supply in Borngasse was routed through pipes to avoid contamination. The residents were still able to meet their daily water needs at the two wells above and below Borngasse, at the Hambrunnen and Grünewaldsbrunnen. It was not until the introduction of the central water supply in 1892 that the significance of the seven public wells gradually decreased. Nevertheless, it took many more years before all households were connected to the water network.