(a) MCLGs for the following contaminants are as indicated: ------------------------------------------------------------------------
(1) Giardia lamblia....................... zero(2) Viruses............................... zero(3) Legionella............................ zero(4) Total coliforms (including fecal)..... zerocoliforms and Escherichia coli............(5) Cryptosporidium....................... zero(6) Escherichia coli (E. coli)............ zero------------------------------------------------------------------------
(b) The MCLG identified in paragraph (a)(4) of this section is applicable until March 31, 2016. The MCLG identified in paragraph (a)(6) of this section is applicable beginning April 1, 2016. [78 FR 10347, Feb. 13, 2013]