Dr. Mercola has a lot of good advice about lead in drinking water.

 

http://articles.mercola.com/sites/articles/archive/2012/12/11/water-filters-on-lead-pipes.aspx?e_cid=20121211_PRNL_art_1

However, he fails to say anything about the connection between fluorosilicic acid and lead. It is simple. Fluorosilicic acid breaks down into orthsilicic acid, and orthosilicic acid is one of the best solvents for lead.

See: http://www.fluoride-class-action.com/hhs/comments-re-lead