Some folks have raised the question whether or not it is safe to use tap water in birdbaths.  They question whether the additives such as chlorine and fluoride placed in tap water are harmful to birds.

       Based on what is widely known tap water does not pose a threat to birds.  If, however, you feel that it might be detrimental to the birds using your birdbath, simply fill a bucket with tap water and let it sit for a few hours before using it.  This will allow chemical such as chlorine to dissipate.