The city of St. John’s says the reason for hundreds of dead fish in the Waterford River and the Bowring Park Duck Pond is a water main break on Dunn’s Lane in Mount Pearl on Friday.
The water main break expelled “significant quantities of drinking water” into a river that feeds into the Waterford River. Regional drinking water is treated with chlorine that prevents bacteria. While that level of chlorine is safe for humans, it is not safe for fish. City staff and the Federal Department of Natural Resources agree on the cause of the kill.
The city says chlorine dissipates quickly. There is no trace of chlorine in the river anymore, and fish have returned to the previously affected areas.
— Gerri Lynn Mackey (@GerriLynnMackey) September 12, 2016