Burst water pipes led to problems with water supplies in Wigan.
United Utilities reported that properties in the WN5 and WN6 areas had no water or it was coming out of the tap slower than usual on Friday morning.
They investigated the cause and found two burst pipes.
The problems in the WN6 area started at around 8am and an inspector found a burst on Coronation Road, in Standish Lower Ground.
A burst on Upholland Road in Billinge was causing problems in the WN5 area from 9.45am.
Engineers worked at both sites to make repairs to the pipes and water supplies were restored by the afternoon.
A spokesman for United Utilities said: “Apologies to our customers who were affected by water loss or low water pressure earlier today in WN5 and WN6. This was caused by a burst water main on Coronation road.
“The burst was reported just after 8am this morning, and our engineers had water flowing as normal shortly after lunchtime. We estimate around 800 properties were affected in this incident.
“We’d like to thank our customers for bearing with us.”