Same thing comes up as soon as the sun's out. DS says all his friends are going swimming in the local river so why can't he? Every year I remind him of at least one of his friends who has spent 5 days with V&D and the boy who was hospitalised with some hideous bug caught from the river. (Friends daughter was a day away from hospital only last week post river swim). Don't want to be a killjoy as back in the day I did swim in rivers myself, but that was before certain pesticides were banned so they probably obliterated every living thing in the river! He's 14. Should I let him get on with it and let him learn a lesson or am I right to stick by my guns? I personally would have just done it without making a fuss but thankfully he still does what he's told.... Well for now anyway!