There is no substitute for fluoridation when it comes to preventing cavities.  Fluoridated water, via the saliva, provides round-the-clock remineralization of the teeth.   

Fluoridation helps everyone, but children with pre-erupted teeth especially need fluoridated water to make their developing teeth stronger.  Studies have shown that that this strengthening is a benefit that lasts a lifetime.

It is child abuse to deny children this inexpensive and safe benefit.