This warning in from ActewAGL:
ActewAGL customers in Mitchell, Franklin and Harrison may experience some discolouration of the water supply tomorrow and Friday due to essential maintenance to the water network.
It is difficult to predict which properties the discoloured water may reach, however the discolouration will clear with normal water use.
If the discolouration is still apparent on Saturday morning (29 October 2011), please call ActewAGL’s faults and emergencies line on 13 11 93.
ActewAGL apologises for any inconvenience this essential work may cause.