From the City of Ontario:
City crews will be repairing a water break on South Lexington-Springmill Road in the area South of Vivian Avenue, near Wappners. The water will be shut off for the area sometime during the morning hours on Wednesday the 11th, after 8:00AM. The water will be off for several hours. Traffic for Southbound traffic will be reduced to one lane.
Sorry for any inconvenience this may cause.