RT Journal
A1 Mitka M
T1 WAter safety
JF JAMA
JO JAMA
YR 2011
FD September 14
VO 306
IS 10
SP 1073
OP 1073
DO 10.1001/jama.2011.1252
UL http://dx.doi.org/10.1001/jama.2011.1252
AB 
The amendments to the Act say that every 5 years the EPA is to select for consideration of regulation at least 5 contaminants that present the greatest public health concern. Between 2003 and 2008, the EPA considered a total of 20 contaminants and decided to not regulate any of them.