Residents of Chippewas of the Thames First Nation are being cautioned to boil their water immediately as it has been deemed unsafe to drink. A precautionary boil water advisory came into effect at 4 p.m. Tuesday, cautioning residents to boil water from their supply. The advisory also applies to Muncee-Delaware Nation. "Any water being used for cooking, drinking, brushing teeth, making beverages, washing babies, and washing fruit and vegetables should be boiled for ONE MINUTE and cooled before use," read a statement on the Chippewas of the Thames website.