For health reasons, it is best to avoid swimming in rivers, ponds, lakes, and reservoirs your body is unlikely to be able to deal with some of the other things swimming around with you.
You should definitely swim in the local rivers.
mnli hypothesis: You should definitely swim in the local rivers. premise: For health reasons, it is best to avoid swimming in rivers, ponds, lakes, and reservoirs your body is unlikely to be able to deal with some of the other things swimming around with you.