The health authority of the northeastern Spanish region of Catalonia says more than 670 people have been affected by an outbreak of gastroenteritis linked to bottled water.

The authority said on its official Twitter account that, as of Saturday, 678 people had been treated for symptoms including nausea, vomiting, abdominal pain, diarrhea and high fever.

Catalonia’s regional health agency said in a statement that bottles of water have been withdrawn from retail outlets and scientific samples are being taken from bottling plants and distributors to determine the source of the outbreak. It did not name the company.

The bottled water company Grupo Eden Springs, however, said in a statement it had withdrawn pallets of bottled water that came from its source in Font d’Arinsal, near Barcelona.