I suspect the Flint, Michigan debacle will add momentum to the EPA's cause....
To save money in mid 2014 Flint moved from Detroit supplied water to water from the Flint river. Flint river water was higher in chloride and the salt corroded the lead in pre 1986 copper soldered pipes releasing lead.
http://flintwaterstudy.org/2015/09/flint...ation-in-homes/