The burst water main is affecting residents in Flint, Holywell, Ffynnongroyw, Greenfield, Llanerch y Mor, Mostyn, Oakenholt, Talacre, Whitford, Aston, Queensferry, Hawarden, Ewloe, Mancot, Garden City, Shotton, Northop, Deeside and the surrounding areas.
Two Cymru Premier matches have also been postponed due to the disruption.
Bottled water stations across Flintshire are keeping people topped up but some have seen long queues.
Beth Hall, animal keeper at Greenacres Animal Park which has a variety of farm and exotic animals, said she was concerned about the impact on the animals.
“We have camels that could drink 200ml in the space of a couple of minutes. We’re heavily reliant on bottled water donations,” she said.
“We [humans] have other sources of water like fizzy drinks, but animals rely on water.
“Its affected us a lot as a business. We rely on the summer holidays to get us through winter months.”
Ricky Blackwell from Connah’s Quay is part of Deeside Roundtable community group and has started delivering water to local residents.
“Obviously we go to a lot of disabled people and pensioners who haven’t been able to get it, they phone up and ask for priority deliveries,” he said.
“We put them on the list but we can’t guarantee it because obviously there’s such a demand at the moment. So we’ve taken it off our own backs to just go round and get the water out to them.”