Big Wave Bay unsafe for swimming over E coli bacteria Swimmers are advised to avoid Big Wave Bay on Hong Kong Island as the quality of its water has got worse, according to the Environmental Protection Department's latest information on grading of 33 beaches. Its grading has fallen from two to four, indicating excessive E coli bacteria. A red flag has been raised on the beach warning it is not safe for swimming. The department is investigating the problem. There were 15 grade one beaches and 16 grade two. Silver Mine Bay was given grade three. Only Big Wave Bay was listed as grade four. Furniture set on fire outside home Police are investigating a suspected case of arson outside a village house in Sha Tin. Police said a man living at Sha Tin Tau village found some furniture outside his house on fire after he was woken up by a barking dog at about 4am. He managed to extinguish the flames and then called police for help. Firemen later found four torches at the fire scene which did not belong to the house owner. No one has been arrested over the incident. Four-vehicle crash at Tai Po A 43-year-old driver was injured in a four-vehicle collision in Tai Po that police said was caused when a car that was travelling towards Kowloon on the Tolo Highway suddenly slowed. Three trucks travelling behind were unable to stop in time and each collided with the vehicle in front. All the drivers passed breathalyser tests.