reliably and consistently below the maximum contaminant level
(2) Guidelines (A) In general The Administrator shall issue, after notice and comment and at the same time as guidelines are issued for source water assessment under section 300j–13 of this title , guidelines for States to follow in proposing alternative monitoring requirements under paragraph (1) for chemical contaminants. The Administrator shall publish such guidelines in the Federal Register. The guidelines shall assure that the public health will be protected from drinking water contamination. The guidelines shall require that a State alternative monitoring program apply on a contaminant-by-contaminant basis and that, to be eligible for such alternative monitoring program, a public water system must show the State that the contaminant is not present in the drinking water supply or, if present, it is reliably and consistently below the maximum contaminant level. (B) Definition For purposes of subparagraph (A), the phrase “reliably and consistently below the maximum contaminant level” means that, although contaminants have been detected in a water supply, the State has sufficient knowledge of the contamination source and extent of contamination to predict that the maximum contaminant level will not be exceeded. In determining that a contaminant is reliably and consistently below the maximum contaminant level, States shall consider the quality and completeness of data, the length of time covered and the volatility or stability of monitoring results during that time, and the proximity of such results to the maximum contaminant level. Wide variations in the analytical results, or analytical results close to the maximum contaminant level, shall not be considered to be reliably and consistently below the maximum contaminant level.
Source
42 USC § 300g-7(b)(2)
Scoping language
None identified, default scope is assumed to be the parent (part B) of this section.