Complex sentence: Water supply was originally from two wells, one at each of the close, however by 1468 lead pipes had been installed bring water into the houses, however the wells continued to function until the 19th century.
Split into simpler sentences: Water supply was originally from two wells, one at each of the close. By 1468 lead pipes had been installed to bring water into the houses, although the wells continued to function until the 19th century.