M.N.
Have you taken him to the dentist yet? There's a really good pediatric dentist in Arcadia and he answered all of those questions for us. Our water has sufficient fluoride that we don't need to supplement it and it's ok if he drinks it. Contact your city for info about how much fluoride is in your water. As for toothpaste, he said that once children are two you can give them the regular toothpaste instead of training toothpaste (no fluoride), but only give them about the amount of 1/2 a pea. That way, if they swallow it, which he said is to be expected until they're about 4 years old, it's not a problem. Hope this helps!