Residents across Columbia reported yellow water coming from their pipes Wednesday.
In a press release that evening, the City of Columbia Water Utility said it was aware of the widespread discoloration and that water quality is tested every day.
City officials assured residents the water is still safe to drink.
The department attributed the discolored water to upgrades at the McBaine Water Treatment Plant, including work on the main transmission line, that left excess minerals in the pipes.
In a post on Facebook, the Water Utility did say 35 residents were under a boil order, and those affected were notified by hanging tags on their doors.
It said the mineral causing the discoloration, calcium bicarbonate, should flush through the system within the next 24 hours — which would be Thursday evening.
