Contamination high risk areas

Some dockside activities and equipment are particularly serious backflow risks because of the types and quantities of possible contaminants or the likelihood of backflow conditions occurring. These include:

• filling of ships' drinking water tanks
• refuelling and general water loading points
• dry docks - especially maintenance work on plumbing systems
• sewage disposal
• fish houses and markets
• pressurised systems and equipment for non-drinking water
• fire-fighting systems using other than mains water