The New South Wales Government has taken control of Sydney's water crisis after Sydney Water admitted it had hesitated before issuing health warnings. A panel of microbiology experts has been appointed to determine when the water supply is safe, while a separate inquiry will establish who, if anyone, is responsible. The entire system is expected to be flushed tonight, and water should be safe to drink by Sunday. Until then, residents and visitors are being advised to boil tap water and avoid swallowing beach, creek or harbor water, which may be polluted by flushing the stormwater drains.