Officials say that a boil-water advisory in Virginia’s capital will remain in place at least until Saturday morning.

Results from the first of two water tests are expected to come in on Friday afternoon around 3 p.m., Richmond Mayor Danny Avula said at a Friday morning press conference. While results of tests can take about 24 hours to complete,

The mayor also shed light on the series of events at the water plant that led to major flooding inside the building and days without access to drinking water for residents.