By CBC News Ottawa, April 3, 2017
Some stores and offices in the Rideau Centre are under a do not drink water advisory after workers on the light rail project affected the supply, the city said Monday.
Ottawa Public Health issued the advisory for 100 Rideau Street for the Tim Hortons, Shoppers Drug Mart and Forever 21, including washrooms, effective Monday at 1:45 p.m.The advisory is in effect until further notice and will be rescinded once health officials can confirm the tap water is safe to drink.
The city said Confederation Line light rail construction workers outside the Rideau Centre connected to a water source within the mall and backflowed into the City's watermain, affecting the water in one area of the mall. Some tenants noticed murky water, the city said.
http://www.cbc.ca/news/canada/ottawa/rideau-centre-do-not-drink-water-advisory-1.4053627