Based upon advice from Mumsnet a reputable source, I started giving DS tap water in a clean but unsterilised sippy cup from 6 months when we started weaning. During his 9-12 month review today, the HV said it needs to be cooled boiled water until 12 months. Eh? This is the chlid I found yesterday surreptitiously eating old garlic peelings from underneath the kitchen cupboard and he chews on the dogs' toys if I can't stop him quickly enough. He doesn't have more than 50-100mL water a day - the rest of his fluid is from BFing. Do I have to start boiling and cooling faffy bollocks or has that horse bolted and I can carry on with tap water?