Como dizer "Beber água no almoço" em inglês

Hey, you! I know that there are some topics regarding prepositions and meals, but none of them fit my doubt. I also know that when you say what you eat, you say "have salad for dinner", but what about the drinks? For example, "Ela bebe agua no jantar". If I say "she drinks water for dinner", it sounds to me that her whole dinner consists on some water So, please, help me! Many thanks in advance!