Residents in homes around Forest Road in Sutton may suffer loss of water pressure while repairs are carried out to several burst water mains.
Sutton and East Surrey Water said the areas likely to be affected are Forest Road, Glenthorne Gardens and Glenthorne Close.
The company said: "We are aware that there have been several burst mains in the area recently and are working to rectify the problem."
Residents may experience poor pressure, a total loss of supply, or discolouration of their water during the work.
Bus route 470 has been diverted around Forest Road.
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