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Why do water main pipes burst?
About 1,500 homes in Wales are still without water because of problems caused by burst pipes after Storm Emma.
Welsh Water said it was still trying to fix problems in Gwynedd, Pembrokeshire and on Anglesey.
Some customers are also still without supplies in Merthyr Tydfil, Brecon, Rhondda, Gwaelod y Garth and Carmarthen.
Welsh Water has apologised.
Thousands without water for a third day In pictures: UK battles snow Shoppers post photos of empty shelves Wales thaws as temperatures rise Anglesey councillor Carwyn Jones told BBC Radio Wales’s Good Morning Wales programme that residents in Llangoed had been without water since Friday without alternative supplies.
It’s not acceptable, these are customers and they are being let down badly."
Mr Skates said the village did receive a bottled water delivery on Monday night from Welsh Water but the firm still could not tell them when supplies would be restored.