GROUND WATER DISINFECTION.

SEC. 107. GROUND WATER DISINFECTION. Paragraph (8) of section 1412(b) (42 U.S.C. 300g-1(b)(8)) is amended by moving the margins of such paragraph 2 ems to the right and by striking the first sentence and inserting the following: “DISINFECTION.—At any time after the end of the 3-year period that begins on the date of enactment of the Safe Drinking Water Act Amendments of 1996, but not later than the date on which the Administrator promulgates a Stage II rulemaking for disinfectants and disinfection byproducts (as described in paragraph (2)(C)), the Administrator shall also promulgate national primary drinking water regulations requiring disinfection as a treatment technique for all public water systems, including surface water systems and, as necessary, ground water systems. After consultation with the States, the Administrator shall (as part of the regulations) promulgate criteria that the Administrator, or a State that has primary enforcement responsibility under section 1413, shall apply to determine whether disinfection shall be required as a treatment technique for any public water system served by ground water.”.