Wastewater Collection and Treatment Learn more about how the City collects and treats wastewater. Learn more Fats, Oils, and Grease (FOG) Learn more about the impacts of putting FOG down the drain, and ways you can protect your property. Learn more Stormwater Collection and Management Learn how the City collects and manages stormwater. Learn more Report a Spill in Sarnia Learn more about reporting spills to the City and MECP. Learn more Helpful Links Wastewater (sewage) tickets – purchase here