Water supply disruption to 1,000 properties in Reading area
About 1,000 homes and businesses in parts of Reading have had their water supply disrupted for a second time following a fault at a pumping station.
Thames Water originally thought the fault at the Earley reservoir had affected 26,000 properties.
The firm said fewer properties had been affected because enough water was retained in the system while engineers fixed a faulty pump.
Some properties had no water, others had very low pressure.
A pump failure at the same reservoir cut supplies to properties in Reading and Wokingham for almost nine hours 10 days ago.
The fault affected properties in the postcodes RG1, RG2, RG6 and RG7.
Thames Water spokeswoman Becky Trotman said: "We're really sorry. It's not acceptable that this has happened again."
The firm said engineers were on site working to repair the reservoir's pumps and hoped to restore supplies by 10:30 BST.
The company warned that water may be discoloured and advised customers to keep taps running until it cleared, and to inform the firm if it continued.