Crews in Atlanta have completed repairs to a key water main whose break, among others, contributed to a huge swath of the city spending days without safe drinking water – though a boil advisory remains in effect for many homes and businesses “out of an abundance of caution,” officials said Wednesday morning.

Water service is “slowly being brought back online to allow system pressures to rebuild,” they said in a news release, following a vast, sometimes intermittent breakdown that began Friday and highlighted the decaying infrastructure criss-crossing a major Southern hub and many other major American cities.