Thames Water engineers have been able to return water supplies to more than four and a half thousand homes in Oxfordshire.
A burst water pipe caused disruption to supplies around Carterton this morning.
A spokesperson said they have been able to divert water through other parts of the network.
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"Calls and emails are coming in all the time" from players who say they had been forced to sign non-disclosure agreements, it was claimed.
Transport Secretary Chris Grayling believes Network Rail should share the responsibility with private train operating companies.
Commuters are facing a miserable journey this morning as a three-day strike begins in protest over driver only trains.