Why might there still small fractions in the water?

The City has taken many steps to remove the likelihood of future detection of petroleum hydrocarbons. These steps include the removal of the original source of contaminant, additional hydrocarbon-related water quality monitoring at the WTP, the flushing of the entire water distribution system, asking residents and businesses to flush their internal plumbing and the implenentatoin of improved customer inquiry procedures. However, the possibility exists that some people may detect petroleum hydrocarbon odours from time to time. If you do flush your internal plumbing as a first step. If odours persist after internal flushing of your plumbing, call the City’s Water Quality Hotline at (867) 979-5603.