Sydney Water's North Head sewage plant dumped 24 kilograms of mercury off Manly in 2009-10, through its deep ocean outfall pipe. That dwarfs the next biggest mercury polluter, the Springvale Colliery's 0.66 kilograms.
By next June Sydney Water would have spent $560 million over four years fixing leaks and blockages in pipes. In the past five years it had rehabilitated 500 kilometres of its 24,000-kilometre wastewater network. Link
No surf after rain I guess!
