TEMPORARY water stations have been set up in Dungiven as a result of NI Water staff industrial action.
Mains supplies to hundreds of homes has been stopped.
Homes in Claudy, Park and Feeny have also been affected by the industrial action.
Both sides in the dispute have promised more talks in a bid to resolve the dispute.
Community workers have asked people not to forget elderly or vulnerable neighbours when collecting water.
The Glenshane Community Development organisation says thousands of people have been affected.
It may be this evening before supplies are restored.
Around 6,500 homes in counties Derry, Tyrone and Fermanagh have no mains water.
Ryan McKinney from the union, Nipsa, said its members were “determined not to be the next pensioners in poverty”.
Mr McKinney said: “When I speak to our members, and they are also affected by the loss of water, they say they aren’t prepared to reinstate goodwill, they haven’t experienced any good will for a long time from the company.
“The company has been very successful over the last number of years… they have reduced bills to hundreds of thousands of business customers.
“They have managed to do that because our members have taken pay freezes and taken redundancy and been forced out of the company. There has to be an end to that and people have to protect their long-term future.”
Speaking on BBC NI’s Good Morning Ulster, NI Water chief executive Sarah Venning said the industrial action was “not responsible” and people had every right to be “fed up”.
“I think the reasonable and responsible thing for us to do is to find a way to enable customers to enjoy the essential services while we work with the unions,” she said.
“People have every right to be fed up, water is an essential public service and industrial action is not responsible.”
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