THE CANADIAN PRESS -- DORVAL, Que. - The residents of Dorval, Que., are being told not to drink the tap water after a plumbing mistake by a contractor emptied thousands of gallons of contaminated water into the city's drinking supply.

The city just west of Montreal says this isn't a boil water advisory -- residents must use only bottled water for drinking, washing food, and for dental hygiene.

Taking a shower and washing hands in the tap water is still considered safe though.

In the meantime, residents can pick up a maximum of four litres of bottled water provided by the city at community centres through the weekend.

The city says it will be making necessary repairs shortly and hopes the "do not drink" notice to be lifted in the next two days.

Pierre Elliott Trudeau Airport, which is located in Dorval and serves Montreal, is also affected by the water warning. (CJAD)