I bought 750ml bottles of water and each time I drank water I either had a bad tummy bug or felt like vomiting

I bought 750ml bottles of water and each time I drank water I either had a bad tummy bug or felt like vomiting. It made me and everyone around the house sick more especially if they drink a full bottle. I bought the water at Blue hills oasis. And I do not think the water there is contamination free. NEVER DRINKING OASIS WATER again ever.