Hornell residents have reported discolored water for the last few weeks.
The water plant is working hard to resolve the issue.
Officials say if anyone is experiencing discolored water, to let their water run until it clears, but boiling it is not necessary.
A system-wide flush will begin in Hornell on Saturday and continue through the rest of the week. This will cause a discoloration temporarily.
The flushing will be done between 11 p.m. and 7 a.m.