The issue emerged at the start of June after a resident near Cherry Beach Park in Stoney Creek complained to the city about a "sewage odour." The city then eventually discovered a black substance in the water within a ditch close to Bartek Ingredients, a company that produces food-grade acid. But both sites contain black, inky water and are a part of the same stormwater runoff system. Despite Bartek installing a pump to try and stop the leak from draining toward Lake Ontario, water in the ditch just beyond the facility is black. It's unclear if Bartek Ingredients is involved in any leak according to the ministry and the company's own investigation.

Source: CBC News July 19, 2020 14:26 UTC